Merge branch 'master' of github.com:msgpack/msgpack

62 files changed, 3417 insertions, 2837 deletions

diff --git a/java/CHANGES.txt b/java/CHANGES.txt
new file mode 100644
index 0000000..77e9318
--- /dev/null
+++ b/java/CHANGES.txt
@@ -0,0 +1,9 @@
+Release 0.3 - 2010/05/23
+  NEW FEATURES
+    Added Unbuffered API + Direct Conversion API to the Unpacker.
+
+  BUG FIXES
+    Zero-length Array and Map is deserialized as List and Map, instead of the
+    array of the Object.
+
+    fixed the bug around Packer.packByte().
diff --git a/java/LICENSE.txt b/java/LICENSE.txt
new file mode 100644
index 0000000..d645695
--- /dev/null
+++ b/java/LICENSE.txt
@@ -0,0 +1,202 @@
+
+                                 Apache License
+                           Version 2.0, January 2004
+                        http://www.apache.org/licenses/
+
+   TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
+
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+      "License" shall mean the terms and conditions for use, reproduction,
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+
+   Unless required by applicable law or agreed to in writing, software
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diff --git a/java/pom.xml b/java/pom.xml
index d1f6c34..44806d5 100755
--- a/java/pom.xml
+++ b/java/pom.xml
@@ -3,11 +3,11 @@
   <modelVersion>4.0.0</modelVersion>

   <groupId>org.msgpack</groupId>

   <artifactId>msgpack</artifactId>

-  <version>0.2</version>

+  <version>0.3</version>

   <description>MessagePack for Java</description>

 

   <name>MessagePack for Java</name>

-  <url>http://msgpack.sourceforge.net/</url>

+  <url>http://msgpack.org/</url>

 

   <licenses>

     <license>

@@ -97,29 +97,24 @@
 

   <repositories>

     <repository>

-      <id>msgpack.sourceforge.net</id>

+      <id>msgpack.org</id>

       <name>MessagePack Maven2 Repository</name>

-      <url>http://msgpack.sourceforge.net/maven2</url>

-    </repository>

-    <repository>

-      <id>msgpack.sourceforge.net</id>

-      <name>MessagePack Maven2 Snapshot Repository</name>

-      <url>http://msgpack.sourceforge.net/maven2-snapshot</url>

+      <url>http://msgpack.org/maven2</url>

     </repository>

   </repositories>

 

   <distributionManagement>

     <repository>

       <uniqueVersion>false</uniqueVersion>

-      <id>shell.sourceforge.net</id>

-      <name>Repository at sourceforge.net</name>

-      <url>scp://shell.sourceforge.net/home/groups/m/ms/msgpack/htdocs/maven2/</url>

+      <id>msgpack.org</id>

+      <name>Repository at msgpack.org</name>

+	  <url>file://${project.build.directory}/website/maven2/</url>

     </repository>

     <snapshotRepository>

        <uniqueVersion>true</uniqueVersion>

-       <id>shell.sourceforge.net</id>

-       <name>Repository Name</name>

-       <url>scp://shell.sourceforge.net/home/groups/m/ms/msgpack/htdocs/maven2-snapshot/</url>

+       <id>msgpack.org</id>

+       <name>Repository at msgpack.org</name>

+	   <url>file://${project.build.directory}/website/maven2/</url>

     </snapshotRepository>

   </distributionManagement>

 

diff --git a/java/src/main/java/org/msgpack/BufferedUnpackerImpl.java b/java/src/main/java/org/msgpack/BufferedUnpackerImpl.java
new file mode 100644
index 0000000..5b449c7
--- /dev/null
+++ b/java/src/main/java/org/msgpack/BufferedUnpackerImpl.java
@@ -0,0 +1,445 @@
+//
+// MessagePack for Java
+//
+// Copyright (C) 2009-2010 FURUHASHI Sadayuki
+//
+//    Licensed under the Apache License, Version 2.0 (the "License");
+//    you may not use this file except in compliance with the License.
+//    You may obtain a copy of the License at
+//
+//        http://www.apache.org/licenses/LICENSE-2.0
+//
+//    Unless required by applicable law or agreed to in writing, software
+//    distributed under the License is distributed on an "AS IS" BASIS,
+//    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+//    See the License for the specific language governing permissions and
+//    limitations under the License.
+//
+package org.msgpack;
+
+import java.io.IOException;
+import java.nio.ByteBuffer;
+import java.math.BigInteger;
+
+abstract class BufferedUnpackerImpl extends UnpackerImpl {
+	int offset = 0;
+	int filled = 0;
+	byte[] buffer = null;
+	private ByteBuffer castBuffer = ByteBuffer.allocate(8);
+
+	abstract boolean fill() throws IOException;
+
+	final boolean next(UnpackResult result) throws IOException, UnpackException {
+		if(filled == 0) {
+			if(!fill()) {
+				return false;
+			}
+		}
+
+		do {
+			int noffset = super.execute(buffer, offset, filled);
+			if(noffset <= offset) {
+				if(!fill()) {
+					return false;
+				}
+				continue;
+			}
+			offset = noffset;
+		} while(!super.isFinished());
+
+		MessagePackObject obj = super.getData();
+		super.reset();
+		result.done(obj);
+
+		return true;
+	}
+
+	private final void more(int require) throws IOException, UnpackException {
+		while(filled - offset < require) {
+			if(!fill()) {
+				// FIXME
+				throw new UnpackException("insufficient buffer");
+			}
+		}
+	}
+
+	private final boolean tryMore(int require) throws IOException, UnpackException {
+		while(filled - offset < require) {
+			if(!fill()) {
+				return false;
+			}
+		}
+		return true;
+	}
+
+	private final void advance(int length) {
+		offset += length;
+	}
+
+	final byte unpackByte() throws IOException, MessageTypeException {
+		int o = unpackInt();
+		if(0x7f < o || o < -0x80) {
+			throw new MessageTypeException();
+		}
+		return (byte)o;
+	}
+
+	final short unpackShort() throws IOException, MessageTypeException {
+		int o = unpackInt();
+		if(0x7fff < o || o < -0x8000) {
+			throw new MessageTypeException();
+		}
+		return (short)o;
+	}
+
+	final int unpackInt() throws IOException, MessageTypeException {
+		more(1);
+		int b = buffer[offset];
+		if((b & 0x80) == 0 || (b & 0xe0) == 0xe0) {  // Fixnum
+			advance(1);
+			return (int)b;
+		}
+		switch(b & 0xff) {
+		case 0xcc:  // unsigned int  8
+			more(2);
+			advance(2);
+			return (int)((short)(buffer[offset-1]) & 0xff);
+		case 0xcd:  // unsigned int 16
+			more(3);
+			castBuffer.rewind();
+			castBuffer.put(buffer, offset+1, 2);
+			advance(3);
+			return (int)((int)castBuffer.getShort(0) & 0xffff);
+		case 0xce:  // unsigned int 32
+			more(5);
+			castBuffer.rewind();
+			castBuffer.put(buffer, offset+1, 4);
+			{
+				int o = castBuffer.getInt(0);
+				if(o < 0) {
+					throw new MessageTypeException();
+				}
+				advance(5);
+				return o;
+			}
+		case 0xcf:  // unsigned int 64
+			more(9);
+			castBuffer.rewind();
+			castBuffer.put(buffer, offset+1, 8);
+			{
+				long o = castBuffer.getLong(0);
+				if(o < 0 || o > 0x7fffffffL) {
+					throw new MessageTypeException();
+				}
+				advance(9);
+				return (int)o;
+			}
+		case 0xd0:  // signed int  8
+			more(2);
+			advance(2);
+			return (int)buffer[offset-1];
+		case 0xd1:  // signed int 16
+			more(3);
+			castBuffer.rewind();
+			castBuffer.put(buffer, offset+1, 2);
+			advance(3);
+			return (int)castBuffer.getShort(0);
+		case 0xd2:  // signed int 32
+			more(4);
+			castBuffer.rewind();
+			castBuffer.put(buffer, offset+1, 4);
+			advance(4);
+			return (int)castBuffer.getInt(0);
+		case 0xd3:  // signed int 64
+			more(9);
+			castBuffer.rewind();
+			castBuffer.put(buffer, offset+1, 8);
+			{
+				long o = castBuffer.getLong(0);
+				if(0x7fffffffL < o || o < -0x80000000L) {
+					throw new MessageTypeException();
+				}
+				advance(9);
+				return (int)o;
+			}
+		default:
+			throw new MessageTypeException();
+		}
+	}
+
+	final long unpackLong() throws IOException, MessageTypeException {
+		more(1);
+		int b = buffer[offset];
+		if((b & 0x80) == 0 || (b & 0xe0) == 0xe0) {  // Fixnum
+			advance(1);
+			return (long)b;
+		}
+		switch(b & 0xff) {
+		case 0xcc:  // unsigned int  8
+			more(2);
+			advance(2);
+			return (long)((short)(buffer[offset-1]) & 0xff);
+		case 0xcd:  // unsigned int 16
+			more(3);
+			castBuffer.rewind();
+			castBuffer.put(buffer, offset+1, 2);
+			advance(3);
+			return (long)((int)castBuffer.getShort(0) & 0xffff);
+		case 0xce:  // unsigned int 32
+			more(5);
+			castBuffer.rewind();
+			castBuffer.put(buffer, offset+1, 4);
+			advance(5);
+			return ((long)castBuffer.getInt(0) & 0xffffffffL);
+		case 0xcf:  // unsigned int 64
+			more(9);
+			castBuffer.rewind();
+			castBuffer.put(buffer, offset+1, 8);
+			{
+				long o = castBuffer.getLong(0);
+				if(o < 0) {
+					throw new MessageTypeException();
+				}
+				advance(9);
+				return o;
+			}
+		case 0xd0:  // signed int  8
+			more(2);
+			advance(2);
+			return (long)buffer[offset-1];
+		case 0xd1:  // signed int 16
+			more(3);
+			castBuffer.rewind();
+			castBuffer.put(buffer, offset+1, 2);
+			advance(3);
+			return (long)castBuffer.getShort(0);
+		case 0xd2:  // signed int 32
+			more(4);
+			castBuffer.rewind();
+			castBuffer.put(buffer, offset+1, 4);
+			advance(4);
+			return (long)castBuffer.getInt(0);
+		case 0xd3:  // signed int 64
+			more(9);
+			castBuffer.rewind();
+			castBuffer.put(buffer, offset+1, 8);
+			advance(9);
+			return (long)castBuffer.getLong(0);
+		default:
+			throw new MessageTypeException();
+		}
+	}
+
+	final BigInteger unpackBigInteger() throws IOException, MessageTypeException {
+		more(1);
+		int b = buffer[offset];
+		if((b & 0xff) != 0xcf) {
+			return BigInteger.valueOf(unpackLong());
+		}
+
+		// unsigned int 64
+		more(9);
+		castBuffer.rewind();
+		castBuffer.put(buffer, offset+1, 8);
+		advance(9);
+		long o = castBuffer.getLong(0);
+		if(o < 0) {
+			return new BigInteger(1, castBuffer.array());
+		} else {
+			return BigInteger.valueOf(o);
+		}
+	}
+
+	final float unpackFloat() throws IOException, MessageTypeException {
+		more(1);
+		int b = buffer[offset];
+		switch(b & 0xff) {
+		case 0xca:  // float
+			more(5);
+			castBuffer.rewind();
+			castBuffer.put(buffer, offset+1, 4);
+			advance(5);
+			return castBuffer.getFloat(0);
+		case 0xcb:  // double
+			more(9);
+			castBuffer.rewind();
+			castBuffer.put(buffer, offset+1, 8);
+			advance(9);
+			// FIXME overflow check
+			return (float)castBuffer.getDouble(0);
+		default:
+			throw new MessageTypeException();
+		}
+	}
+
+	final double unpackDouble() throws IOException, MessageTypeException {
+		more(1);
+		int b = buffer[offset];
+		switch(b & 0xff) {
+		case 0xca:  // float
+			more(5);
+			castBuffer.rewind();
+			castBuffer.put(buffer, offset+1, 4);
+			advance(5);
+			return (double)castBuffer.getFloat(0);
+		case 0xcb:  // double
+			more(9);
+			castBuffer.rewind();
+			castBuffer.put(buffer, offset+1, 8);
+			advance(9);
+			return castBuffer.getDouble(0);
+		default:
+			throw new MessageTypeException();
+		}
+	}
+
+	final Object unpackNull() throws IOException, MessageTypeException {
+		more(1);
+		int b = buffer[offset] & 0xff;
+		if(b != 0xc0) {  // nil
+			throw new MessageTypeException();
+		}
+		advance(1);
+		return null;
+	}
+
+	final boolean tryUnpackNull() throws IOException {
+		if(!tryMore(1)) {
+			return false;
+		}
+		int b = buffer[offset] & 0xff;
+		if(b != 0xc0) {  // nil
+			return false;
+		}
+		advance(1);
+		return true;
+	}
+
+	final boolean unpackBoolean() throws IOException, MessageTypeException {
+		more(1);
+		int b = buffer[offset] & 0xff;
+		if(b == 0xc2) {  // false
+			advance(1);
+			return false;
+		} else if(b == 0xc3) {  // true
+			advance(1);
+			return true;
+		} else {
+			throw new MessageTypeException();
+		}
+	}
+
+	final int unpackArray() throws IOException, MessageTypeException {
+		more(1);
+		int b = buffer[offset];
+		if((b & 0xf0) == 0x90) {  // FixArray
+			advance(1);
+			return (int)(b & 0x0f);
+		}
+		switch(b & 0xff) {
+		case 0xdc:  // array 16
+			more(3);
+			castBuffer.rewind();
+			castBuffer.put(buffer, offset+1, 2);
+			advance(3);
+			return (int)castBuffer.getShort(0) & 0xffff;
+		case 0xdd:  // array 32
+			more(5);
+			castBuffer.rewind();
+			castBuffer.put(buffer, offset+1, 4);
+			advance(5);
+			// FIXME overflow check
+			return castBuffer.getInt(0) & 0x7fffffff;
+		default:
+			throw new MessageTypeException();
+		}
+	}
+
+	final int unpackMap() throws IOException, MessageTypeException {
+		more(1);
+		int b = buffer[offset];
+		if((b & 0xf0) == 0x80) {  // FixMap
+			advance(1);
+			return (int)(b & 0x0f);
+		}
+		switch(b & 0xff) {
+		case 0xde:  // map 16
+			more(3);
+			castBuffer.rewind();
+			castBuffer.put(buffer, offset+1, 2);
+			advance(3);
+			return (int)castBuffer.getShort(0) & 0xffff;
+		case 0xdf:  // map 32
+			more(5);
+			castBuffer.rewind();
+			castBuffer.put(buffer, offset+1, 4);
+			advance(5);
+			// FIXME overflow check
+			return castBuffer.getInt(0) & 0x7fffffff;
+		default:
+			throw new MessageTypeException();
+		}
+	}
+
+	final int unpackRaw() throws IOException, MessageTypeException {
+		more(1);
+		int b = buffer[offset];
+		if((b & 0xe0) == 0xa0) {  // FixRaw
+			advance(1);
+			return (int)(b & 0x1f);
+		}
+		switch(b & 0xff) {
+		case 0xda:  // raw 16
+			more(3);
+			castBuffer.rewind();
+			castBuffer.put(buffer, offset+1, 2);
+			advance(3);
+			return (int)castBuffer.getShort(0) & 0xffff;
+		case 0xdb:  // raw 32
+			more(5);
+			castBuffer.rewind();
+			castBuffer.put(buffer, offset+1, 4);
+			advance(5);
+			// FIXME overflow check
+			return castBuffer.getInt(0) & 0x7fffffff;
+		default:
+			throw new MessageTypeException();
+		}
+	}
+
+	final byte[] unpackRawBody(int length) throws IOException {
+		more(length);
+		byte[] bytes = new byte[length];
+		System.arraycopy(buffer, offset, bytes, 0, length);
+		advance(length);
+		return bytes;
+	}
+
+	final byte[] unpackByteArray() throws IOException, MessageTypeException {
+		int length = unpackRaw();
+		return unpackRawBody(length);
+	}
+
+	final String unpackString() throws IOException, MessageTypeException {
+		int length = unpackRaw();
+		more(length);
+		String s;
+		try {
+			s = new String(buffer, offset, length, "UTF-8");
+		} catch (Exception e) {
+			throw new MessageTypeException();
+		}
+		advance(length);
+		return s;
+	}
+
+	final MessagePackObject unpackObject() throws IOException {
+		UnpackResult result = new UnpackResult();
+		if(!next(result)) {
+			super.reset();
+			throw new UnpackException("insufficient buffer");
+		}
+		return result.getData();
+	}
+}
+
diff --git a/java/src/main/java/org/msgpack/MessageMergeable.java b/java/src/main/java/org/msgpack/MessageConvertable.java
index e5a5b45..8acf1f2 100644
--- a/java/src/main/java/org/msgpack/MessageMergeable.java
+++ b/java/src/main/java/org/msgpack/MessageConvertable.java
@@ -17,7 +17,7 @@
 //
 package org.msgpack;
 
-public interface MessageMergeable {
-	public void messageMerge(Object obj) throws MessageTypeException;
+public interface MessageConvertable {
+	public void messageConvert(MessagePackObject obj) throws MessageTypeException;
 }
 
diff --git a/java/src/main/java/org/msgpack/MessagePackObject.java b/java/src/main/java/org/msgpack/MessagePackObject.java
new file mode 100644
index 0000000..2424446
--- /dev/null
+++ b/java/src/main/java/org/msgpack/MessagePackObject.java
@@ -0,0 +1,136 @@
+//
+// MessagePack for Java
+//
+// Copyright (C) 2009-2010 FURUHASHI Sadayuki
+//
+//    Licensed under the Apache License, Version 2.0 (the "License");
+//    you may not use this file except in compliance with the License.
+//    You may obtain a copy of the License at
+//
+//        http://www.apache.org/licenses/LICENSE-2.0
+//
+//    Unless required by applicable law or agreed to in writing, software
+//    distributed under the License is distributed on an "AS IS" BASIS,
+//    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+//    See the License for the specific language governing permissions and
+//    limitations under the License.
+//
+package org.msgpack;
+
+import java.util.List;
+import java.util.Set;
+import java.util.Map;
+import java.math.BigInteger;
+
+public abstract class MessagePackObject implements Cloneable, MessagePackable {
+	public boolean isNil() {
+		return false;
+	}
+
+	public boolean isBooleanType() {
+		return false;
+	}
+
+	public boolean isIntegerType() {
+		return false;
+	}
+
+	public boolean isFloatType() {
+		return false;
+	}
+
+	public boolean isArrayType() {
+		return false;
+	}
+
+	public boolean isMapType() {
+		return false;
+	}
+
+	public boolean isRawType() {
+		return false;
+	}
+
+	public boolean asBoolean() {
+		throw new MessageTypeException("type error");
+	}
+
+	public byte asByte() {
+		throw new MessageTypeException("type error");
+	}
+
+	public short asShort() {
+		throw new MessageTypeException("type error");
+	}
+
+	public int asInt() {
+		throw new MessageTypeException("type error");
+	}
+
+	public long asLong() {
+		throw new MessageTypeException("type error");
+	}
+
+	public BigInteger asBigInteger() {
+		throw new MessageTypeException("type error");
+	}
+
+	public float asFloat() {
+		throw new MessageTypeException("type error");
+	}
+
+	public double asDouble() {
+		throw new MessageTypeException("type error");
+	}
+
+	public byte[] asByteArray() {
+		throw new MessageTypeException("type error");
+	}
+
+	public String asString() {
+		throw new MessageTypeException("type error");
+	}
+
+	public MessagePackObject[] asArray() {
+		throw new MessageTypeException("type error");
+	}
+
+	public List<MessagePackObject> asList() {
+		throw new MessageTypeException("type error");
+	}
+
+	public Map<MessagePackObject, MessagePackObject> asMap() {
+		throw new MessageTypeException("type error");
+	}
+
+	public byte byteValue() {
+		throw new MessageTypeException("type error");
+	}
+
+	public short shortValue() {
+		throw new MessageTypeException("type error");
+	}
+
+	public int intValue() {
+		throw new MessageTypeException("type error");
+	}
+
+	public long longValue() {
+		throw new MessageTypeException("type error");
+	}
+
+	public BigInteger bigIntegerValue() {
+		throw new MessageTypeException("type error");
+	}
+
+	public float floatValue() {
+		throw new MessageTypeException("type error");
+	}
+
+	public double doubleValue() {
+		throw new MessageTypeException("type error");
+	}
+
+	abstract public Object clone();
+}
+
diff --git a/java/src/main/java/org/msgpack/MessageTypeException.java b/java/src/main/java/org/msgpack/MessageTypeException.java
index feb6c08..698ef6d 100644
--- a/java/src/main/java/org/msgpack/MessageTypeException.java
+++ b/java/src/main/java/org/msgpack/MessageTypeException.java
@@ -17,23 +17,11 @@
 //
 package org.msgpack;
 
-import java.io.IOException;
-
-public class MessageTypeException extends IOException {
+public class MessageTypeException extends RuntimeException {
 	public MessageTypeException() { }
 
 	public MessageTypeException(String s) {
 		super(s);
 	}
-
-	public static MessageTypeException invalidConvert(Object from, Schema to) {
-		return new MessageTypeException(from.getClass().getName()+" cannot be convert to "+to.getExpression());
-	}
-
-	/* FIXME
-	public static MessageTypeException schemaMismatch(Schema to) {
-		return new MessageTypeException("schema mismatch "+to.getExpression());
-	}
-	*/
 }
 
diff --git a/java/src/main/java/org/msgpack/schema/IArraySchema.java b/java/src/main/java/org/msgpack/MessageUnpackable.java
index 67e9f55..cc206e7 100644
--- a/java/src/main/java/org/msgpack/schema/IArraySchema.java
+++ b/java/src/main/java/org/msgpack/MessageUnpackable.java
@@ -15,12 +15,11 @@
 //    See the License for the specific language governing permissions and
 //    limitations under the License.
 //
-package org.msgpack.schema;
+package org.msgpack;
 
-import org.msgpack.Schema;
+import java.io.IOException;
 
-public interface IArraySchema {
-	public Schema getElementSchema(int index);
-	public Object createFromArray(Object[] obj);
+public interface MessageUnpackable {
+	public void messageUnpack(Unpacker pac) throws IOException, MessageTypeException;
 }
 
diff --git a/java/src/main/java/org/msgpack/Packer.java b/java/src/main/java/org/msgpack/Packer.java
index 935728d..139b3b1 100644
--- a/java/src/main/java/org/msgpack/Packer.java
+++ b/java/src/main/java/org/msgpack/Packer.java
@@ -22,7 +22,24 @@ import java.io.IOException;
 import java.nio.ByteBuffer;
 import java.util.List;
 import java.util.Map;
-
+import java.math.BigInteger;
+
+/**
+ * Packer enables you to serialize objects into OutputStream.
+ *
+ * <pre>
+ * // create a packer with output stream
+ * Packer pk = new Packer(System.out);
+ *
+ * // store an object with pack() method.
+ * pk.pack(1);
+ *
+ * // you can store String, List, Map, byte[] and primitive types.
+ * pk.pack(new ArrayList());
+ * </pre>
+ *
+ * You can serialize objects that implements {@link MessagePackable} interface.
+ */
 public class Packer {
 	protected byte[] castBytes = new byte[9];
 	protected ByteBuffer castBuffer = ByteBuffer.wrap(castBytes);
@@ -34,7 +51,7 @@ public class Packer {
 
 	public Packer packByte(byte d) throws IOException {
 		if(d < -(1<<5)) {
-			castBytes[0] = (byte)0xd1;
+			castBytes[0] = (byte)0xd0;
 			castBytes[1] = d;
 			out.write(castBytes, 0, 2);
 		} else {
@@ -178,6 +195,27 @@ public class Packer {
 		return this;
 	}
 
+	public Packer packBigInteger(BigInteger d) throws IOException {
+		if(d.bitLength() <= 63) {
+			return packLong(d.longValue());
+		} else if(d.bitLength() <= 64 && d.signum() >= 0) {
+			castBytes[0] = (byte)0xcf;
+			byte[] barray = d.toByteArray();
+			castBytes[1] = barray[barray.length-8];
+			castBytes[2] = barray[barray.length-7];
+			castBytes[3] = barray[barray.length-6];
+			castBytes[4] = barray[barray.length-5];
+			castBytes[5] = barray[barray.length-4];
+			castBytes[6] = barray[barray.length-3];
+			castBytes[7] = barray[barray.length-2];
+			castBytes[8] = barray[barray.length-1];
+			out.write(castBytes);
+			return this;
+		} else {
+			throw new MessageTypeException("can't pack BigInteger larger than 0xffffffffffffffff");
+		}
+	}
+
 	public Packer packFloat(float d) throws IOException {
 		castBytes[0] = (byte)0xca;
 		castBuffer.putFloat(1, d);
@@ -207,6 +245,10 @@ public class Packer {
 		return this;
 	}
 
+	public Packer packBoolean(boolean d) throws IOException {
+		return d ? packTrue() : packFalse();
+	}
+
 	public Packer packArray(int n) throws IOException {
 		if(n < 16) {
 			final int d = 0x90 | n;
@@ -266,12 +308,6 @@ public class Packer {
 	}
 
 
-	public Packer packWithSchema(Object o, Schema s) throws IOException {
-		s.pack(this, o);
-		return this;
-	}
-
-
 	public Packer packString(String s) throws IOException {
 		byte[] b = ((String)s).getBytes("UTF-8");
 		packRaw(b.length);
@@ -279,39 +315,36 @@ public class Packer {
 	}
 
 
-	public Packer pack(String o) throws IOException {
-		if(o == null) { return packNil(); }
-		return packString(o);
+	public Packer pack(boolean o) throws IOException {
+		if(o) {
+			return packTrue();
+		} else {
+			return packFalse();
+		}
 	}
 
-	public Packer pack(MessagePackable o) throws IOException {
-		if(o == null) { return packNil(); }
-		o.messagePack(this);
-		return this;
+	public Packer pack(byte o) throws IOException {
+		return packByte(o);
 	}
 
-	public Packer pack(byte[] o) throws IOException {
-		if(o == null) { return packNil(); }
-		packRaw(o.length);
-		return packRawBody(o);
+	public Packer pack(short o) throws IOException {
+		return packShort(o);
 	}
 
-	public Packer pack(List o) throws IOException {
-		if(o == null) { return packNil(); }
-		packArray(o.size());
-		for(Object i : o) { pack(i); }
-		return this;
+	public Packer pack(int o) throws IOException {
+		return packInt(o);
 	}
 
-	@SuppressWarnings("unchecked")
-	public Packer pack(Map o) throws IOException {
-		if(o == null) { return packNil(); }
-		packMap(o.size());
-		for(Map.Entry e : ((Map<Object,Object>)o).entrySet()) {
-			pack(e.getKey());
-			pack(e.getValue());
-		}
-		return this;
+	public Packer pack(long o) throws IOException {
+		return packLong(o);
+	}
+
+	public Packer pack(float o) throws IOException {
+		return packFloat(o);
+	}
+
+	public Packer pack(double o) throws IOException {
+		return packDouble(o);
 	}
 
 	public Packer pack(Boolean o) throws IOException {
@@ -343,6 +376,11 @@ public class Packer {
 		return packLong(o);
 	}
 
+	public Packer pack(BigInteger o) throws IOException {
+		if(o == null) { return packNil(); }
+		return packBigInteger(o);
+	}
+
 	public Packer pack(Float o) throws IOException {
 		if(o == null) { return packNil(); }
 		return packFloat(o);
@@ -353,8 +391,41 @@ public class Packer {
 		return packDouble(o);
 	}
 
+	public Packer pack(String o) throws IOException {
+		if(o == null) { return packNil(); }
+		return packString(o);
+	}
+
+	public Packer pack(MessagePackable o) throws IOException {
+		if(o == null) { return packNil(); }
+		o.messagePack(this);
+		return this;
+	}
+
+	public Packer pack(byte[] o) throws IOException {
+		if(o == null) { return packNil(); }
+		packRaw(o.length);
+		return packRawBody(o);
+	}
+
+	public Packer pack(List o) throws IOException {
+		if(o == null) { return packNil(); }
+		packArray(o.size());
+		for(Object i : o) { pack(i); }
+		return this;
+	}
+
+	public Packer pack(Map o) throws IOException {
+		if(o == null) { return packNil(); }
+		packMap(o.size());
+		for(Map.Entry<Object,Object> e : ((Map<Object,Object>)o).entrySet()) {
+			pack(e.getKey());
+			pack(e.getValue());
+		}
+		return this;
+	}
+
 
-	@SuppressWarnings("unchecked")
 	public Packer pack(Object o) throws IOException {
 		if(o == null) {
 			return packNil();
@@ -377,7 +448,7 @@ public class Packer {
 		} else if(o instanceof Map) {
 			Map<Object,Object> m = (Map<Object,Object>)o;
 			packMap(m.size());
-			for(Map.Entry e : m.entrySet()) {
+			for(Map.Entry<Object,Object> e : m.entrySet()) {
 				pack(e.getKey());
 				pack(e.getValue());
 			}
@@ -400,8 +471,10 @@ public class Packer {
 			return packFloat((Float)o);
 		} else if(o instanceof Double) {
 			return packDouble((Double)o);
+		} else if(o instanceof BigInteger) {
+			return packBigInteger((BigInteger)o);
 		} else {
-			throw new IOException("unknown object "+o+" ("+o.getClass()+")");
+			throw new MessageTypeException("unknown object "+o+" ("+o.getClass()+")");
 		}
 	}
 }
diff --git a/java/src/main/java/org/msgpack/Schema.java b/java/src/main/java/org/msgpack/Schema.java
deleted file mode 100644
index f191f7a..0000000
--- a/java/src/main/java/org/msgpack/Schema.java
+++ /dev/null
@@ -1,133 +0,0 @@
-//
-// MessagePack for Java
-//
-// Copyright (C) 2009-2010 FURUHASHI Sadayuki
-//
-//    Licensed under the Apache License, Version 2.0 (the "License");
-//    you may not use this file except in compliance with the License.
-//    You may obtain a copy of the License at
-//
-//        http://www.apache.org/licenses/LICENSE-2.0
-//
-//    Unless required by applicable law or agreed to in writing, software
-//    distributed under the License is distributed on an "AS IS" BASIS,
-//    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-//    See the License for the specific language governing permissions and
-//    limitations under the License.
-//
-package org.msgpack;
-
-import java.io.Writer;
-import java.io.IOException;
-import org.msgpack.schema.SSchemaParser;
-import org.msgpack.schema.ClassGenerator;
-
-public abstract class Schema {
-	private String expression;
-	private String name;
-
-	public Schema(String name) {
-		this.expression = expression;
-		this.name = name;
-	}
-
-	public String getName() {
-		return name;
-	}
-
-	public String getFullName() {
-		return name;
-	}
-
-	public String getExpression() {
-		return name;
-	}
-
-	public static Schema parse(String source) {
-		return SSchemaParser.parse(source);
-	}
-
-	public static Schema load(String source) {
-		return SSchemaParser.load(source);
-	}
-
-	public void write(Writer output) throws IOException {
-		ClassGenerator.write(this, output);
-	}
-
-	public abstract void pack(Packer pk, Object obj) throws IOException;
-
-	public abstract Object convert(Object obj) throws MessageTypeException;
-
-
-	public Object createFromNil() {
-		return null;
-	}
-
-	public Object createFromBoolean(boolean v) {
-		throw new RuntimeException("type error");
-	}
-
-	public Object createFromByte(byte v) {
-		throw new RuntimeException("type error");
-	}
-
-	public Object createFromShort(short v) {
-		throw new RuntimeException("type error");
-	}
-
-	public Object createFromInt(int v) {
-		throw new RuntimeException("type error");
-	}
-
-	public Object createFromLong(long v) {
-		throw new RuntimeException("type error");
-	}
-
-	public Object createFromFloat(float v) {
-		throw new RuntimeException("type error");
-	}
-
-	public Object createFromDouble(double v) {
-		throw new RuntimeException("type error");
-	}
-
-	public Object createFromRaw(byte[] b, int offset, int length) {
-		throw new RuntimeException("type error");
-	}
-
-	/* FIXME
-	public Object createFromBoolean(boolean v) {
-		throw MessageTypeException.schemaMismatch(this);
-	}
-
-	public Object createFromByte(byte v) {
-		throw MessageTypeException.schemaMismatch(this);
-	}
-
-	public Object createFromShort(short v) {
-		throw MessageTypeException.schemaMismatch(this);
-	}
-
-	public Object createFromInt(int v) {
-		throw MessageTypeException.schemaMismatch(this);
-	}
-
-	public Object createFromLong(long v) {
-		throw MessageTypeException.schemaMismatch(this);
-	}
-
-	public Object createFromFloat(float v) {
-		throw MessageTypeException.schemaMismatch(this);
-	}
-
-	public Object createFromDouble(double v) {
-		throw MessageTypeException.schemaMismatch(this);
-	}
-
-	public Object createFromRaw(byte[] b, int offset, int length) {
-		throw MessageTypeException.schemaMismatch(this);
-	}
-	*/
-}
-
diff --git a/java/src/main/java/org/msgpack/UnbufferedUnpacker.java b/java/src/main/java/org/msgpack/UnbufferedUnpacker.java
deleted file mode 100644
index b427973..0000000
--- a/java/src/main/java/org/msgpack/UnbufferedUnpacker.java
+++ /dev/null
@@ -1,82 +0,0 @@
-//
-// MessagePack for Java
-//
-// Copyright (C) 2009-2010 FURUHASHI Sadayuki
-//
-//    Licensed under the Apache License, Version 2.0 (the "License");
-//    you may not use this file except in compliance with the License.
-//    You may obtain a copy of the License at
-//
-//        http://www.apache.org/licenses/LICENSE-2.0
-//
-//    Unless required by applicable law or agreed to in writing, software
-//    distributed under the License is distributed on an "AS IS" BASIS,
-//    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-//    See the License for the specific language governing permissions and
-//    limitations under the License.
-//
-package org.msgpack;
-
-import java.lang.Iterable;
-import java.io.InputStream;
-import java.io.IOException;
-import java.util.Iterator;
-import org.msgpack.impl.UnpackerImpl;
-
-public class UnbufferedUnpacker extends UnpackerImpl {
-	private int offset;
-	private boolean finished;
-	private Object data;
-
-	public UnbufferedUnpacker() {
-		super();
-		this.offset = 0;
-		this.finished = false;
-	}
-
-	public UnbufferedUnpacker useSchema(Schema s) {
-		super.setSchema(s);
-		return this;
-	}
-
-	public Object getData() {
-		return data;
-	}
-
-	public boolean isFinished() {
-		return finished;
-	}
-
-	public void reset() {
-		super.reset();
-		this.offset = 0;
-	}
-
-	int getOffset() {
-		return offset;
-	}
-
-	void setOffset(int offset) {
-		this.offset = offset;
-	}
-
-	public int execute(byte[] buffer) throws UnpackException {
-		return execute(buffer, 0, buffer.length);
-	}
-
-	// FIXME
-	public int execute(byte[] buffer, int offset, int length) throws UnpackException
-	{
-		int noffset = super.execute(buffer, offset + this.offset, length);
-		this.offset = noffset - offset;
-		if(super.isFinished()) {
-			this.data = super.getData();
-			this.finished = true;
-			super.reset();
-		} else {
-			this.finished = false;
-		}
-		return noffset;
-	}
-}
-
diff --git a/java/src/main/java/org/msgpack/UnpackIterator.java b/java/src/main/java/org/msgpack/UnpackIterator.java
index 0a78e83..8c778b6 100644
--- a/java/src/main/java/org/msgpack/UnpackIterator.java
+++ b/java/src/main/java/org/msgpack/UnpackIterator.java
@@ -21,41 +21,28 @@ import java.io.IOException;
 import java.util.Iterator;
 import java.util.NoSuchElementException;
 
-public class UnpackIterator implements Iterator<Object> {
+public class UnpackIterator extends UnpackResult implements Iterator<MessagePackObject> {
 	private Unpacker pac;
-	private boolean have;
-	private Object data;
 
 	UnpackIterator(Unpacker pac) {
+		super();
 		this.pac = pac;
-		this.have = false;
 	}
 
 	public boolean hasNext() {
-		if(have) { return true; }
+		if(finished) { return true; }
 		try {
-			while(true) {
-				if(pac.execute()) {
-					data = pac.getData();
-					pac.reset();
-					have = true;
-					return true;
-				}
-
-				if(!pac.fill()) {
-					return false;
-				}
-			}
+			return pac.next(this);
 		} catch (IOException e) {
 			return false;
 		}
 	}
 
-	public Object next() {
-		if(!have && !hasNext()) {
+	public MessagePackObject next() {
+		if(!finished && !hasNext()) {
 			throw new NoSuchElementException();
 		}
-		have = false;
+		finished = false;
 		return data;
 	}
 
diff --git a/java/src/main/java/org/msgpack/schema/FieldSchema.java b/java/src/main/java/org/msgpack/UnpackResult.java
index 66c2ff2..bb981c1 100644
--- a/java/src/main/java/org/msgpack/schema/FieldSchema.java
+++ b/java/src/main/java/org/msgpack/UnpackResult.java
@@ -15,29 +15,28 @@
 //    See the License for the specific language governing permissions and
 //    limitations under the License.
 //
-package org.msgpack.schema;
+package org.msgpack;
 
-import org.msgpack.Schema;
+public class UnpackResult {
+	protected boolean finished = false;
+	protected MessagePackObject data = null;
 
-public class FieldSchema {
-	private String name;
-	private Schema schema;
-
-	public FieldSchema(String name, Schema schema) {
-		this.name = name;
-		this.schema = schema;
+	public boolean isFinished() {
+		return finished;
 	}
 
-	public final String getName() {
-		return name;
+	public MessagePackObject getData() {
+		return data;
 	}
 
-	public final Schema getSchema() {
-		return schema;
+	public void reset() {
+		finished = false;
+		data = null;
 	}
 
-	public String getExpression() {
-		return "(field "+name+" "+schema.getExpression()+")";
+	void done(MessagePackObject obj) {
+		finished = true;
+		data = obj;
 	}
 }
 
diff --git a/java/src/main/java/org/msgpack/Unpacker.java b/java/src/main/java/org/msgpack/Unpacker.java
index c8a8823..3cae502 100644
--- a/java/src/main/java/org/msgpack/Unpacker.java
+++ b/java/src/main/java/org/msgpack/Unpacker.java
@@ -22,144 +22,382 @@ import java.io.InputStream;
 import java.io.IOException;
 import java.util.Iterator;
 import java.nio.ByteBuffer;
-import org.msgpack.impl.UnpackerImpl;
-
-public class Unpacker extends UnpackerImpl implements Iterable<Object> {
+import java.math.BigInteger;
+
+/**
+ * Unpacker enables you to deserialize objects from stream.
+ *
+ * Unpacker provides Buffered API, Unbuffered API and
+ * Direct Conversion API.
+ *
+ * Buffered API uses the internal buffer of the Unpacker.
+ * Following code uses Buffered API with an InputStream:
+ * <pre>
+ * // create an unpacker with input stream
+ * Unpacker pac = new Unpacker(System.in);
+ *
+ * // take a object out using next() method, or ...
+ * UnpackResult result = pac.next();
+ *
+ * // use an iterator.
+ * for(MessagePackObject obj : pac) {
+ *   // use MessageConvertable interface to convert the
+ *   // the generic object to the specific type.
+ * }
+ * </pre>
+ *
+ * Following code doesn't use the input stream and feeds buffer
+ * using {@link feed(byte[])} method. This is useful to use
+ * special stream like zlib or event-driven I/O library.
+ * <pre>
+ * // create an unpacker without input stream
+ * Unpacker pac = new Unpacker();
+ *
+ * // feed buffer to the internal buffer.
+ * pac.feed(input_bytes);
+ *
+ * // use next() method or iterators.
+ * for(MessagePackObject obj : pac) {
+ *   // ...
+ * }
+ * </pre>
+ *
+ * The combination of {@link reserveBuffer()}, {@link getBuffer()},
+ * {@link getBufferOffset()}, {@link getBufferCapacity()} and
+ * {@link bufferConsumed()} is useful to omit copying.
+ * <pre>
+ * // create an unpacker without input stream
+ * Unpacker pac = new Unpacker();
+ *
+ * // reserve internal buffer at least 1024 bytes.
+ * pac.reserveBuffer(1024);
+ *
+ * // feed buffer to the internal buffer upto pac.getBufferCapacity() bytes.
+ * System.in.read(pac.getBuffer(), pac.getBufferOffset(), pac.getBufferCapacity());
+ *
+ * // use next() method or iterators.
+ * for(MessagePackObject obj : pac) {
+ *     // ...
+ * }
+ * </pre>
+ *
+ * Unbuffered API doesn't initialize the internal buffer.
+ * You can manage the buffer manually.
+ * <pre>
+ * // create an unpacker with input stream
+ * Unpacker pac = new Unpacker(System.in);
+ *
+ * // manage the buffer manually.
+ * byte[] buffer = new byte[1024];
+ * int filled = System.in.read(buffer);
+ * int offset = 0;
+ *
+ * // deserialize objects using execute() method.
+ * int nextOffset = pac.execute(buffer, offset, filled);
+ *
+ * // take out object if deserialized object is ready.
+ * if(pac.isFinished()) {
+ *     MessagePackObject obj = pac.getData();
+ *     // ...
+ * }
+ * </pre>
+ */
+public class Unpacker implements Iterable<MessagePackObject> {
+
+	// buffer:
+	// +---------------------------------------------+
+	// | [object] | [obje| unparsed ... | unused  ...|
+	// +---------------------------------------------+
+	//            ^ parsed
+	//                   ^ offset
+	//                                  ^ filled
+	//                                               ^ buffer.length
+
+	private static final int DEFAULT_BUFFER_SIZE = 32*1024;
+
+	protected int parsed;
+	protected int bufferReserveSize;
+	protected InputStream stream;
+
+	final class BufferedUnpackerMixin extends BufferedUnpackerImpl {
+		boolean fill() throws IOException {
+			if(stream == null) {
+				return false;
+			}
+			reserveBuffer(bufferReserveSize);
+			int rl = stream.read(buffer, filled, buffer.length - filled);
+			// equals: stream.read(getBuffer(), getBufferOffset(), getBufferCapacity());
+			if(rl <= 0) {
+				return false;
+			}
+			bufferConsumed(rl);
+			return true;
+		}
+	};
 
-	public static final int DEFAULT_BUFFER_SIZE = 32*1024;
+	final BufferedUnpackerMixin impl = new BufferedUnpackerMixin();
 
-	private int used;
-	private int offset;
-	private int parsed;
-	private byte[] buffer;
-	private int bufferReserveSize;
-	private InputStream stream;
 
+	/**
+	 * Calls {@link Unpacker(DEFAULT_BUFFER_SIZE)}
+	 */
 	public Unpacker() {
 		this(DEFAULT_BUFFER_SIZE);
 	}
 
+	/**
+	 * Calls {@link Unpacker(null, bufferReserveSize)}
+	 */
 	public Unpacker(int bufferReserveSize) {
 		this(null, bufferReserveSize);
 	}
 
+	/**
+	 * Calls {@link Unpacker(stream, DEFAULT_BUFFER_SIZE)}
+	 */
 	public Unpacker(InputStream stream) {
 		this(stream, DEFAULT_BUFFER_SIZE);
 	}
 
+	/**
+	 * Constructs the unpacker.
+	 * The stream is used to fill the buffer when more buffer is required by {@link next()} or {@link UnpackIterator#hasNext()} method.
+	 * @param stream input stream to fill the buffer
+	 * @param bufferReserveSize threshold size to expand the size of buffer
+	 */
 	public Unpacker(InputStream stream, int bufferReserveSize) {
-		super();
-		this.used = 0;
-		this.offset = 0;
 		this.parsed = 0;
-		this.buffer = new byte[bufferReserveSize];
 		this.bufferReserveSize = bufferReserveSize/2;
 		this.stream = stream;
 	}
 
-	public Unpacker useSchema(Schema s) {
-		super.setSchema(s);
-		return this;
+
+	/**
+	 * Gets the input stream.
+	 * @return the input stream. it may be null.
+	 */
+	public InputStream getStream() {
+		return this.stream;
+	}
+
+	/**
+	 * Sets the input stream.
+	 * @param stream the input stream to set.
+	 */
+	public void setStream(InputStream stream) {
+		this.stream = stream;
+	}
+
+
+	/**
+	 * Fills the buffer with the specified buffer.
+	 */
+	public void feed(byte[] buffer) {
+		feed(buffer, 0, buffer.length);
+	}
+
+	/**
+	 * Fills the buffer with the specified buffer.
+	 */
+	public void feed(byte[] buffer, int offset, int length) {
+		reserveBuffer(length);
+		System.arraycopy(buffer, offset, impl.buffer, impl.offset, length);
+		bufferConsumed(length);
+	}
+
+	/**
+	 * Fills the buffer with the specified buffer.
+	 */
+	public void feed(ByteBuffer buffer) {
+		int length = buffer.remaining();
+		if (length == 0) return;
+		reserveBuffer(length);
+		buffer.get(impl.buffer, impl.offset, length);
+		bufferConsumed(length);
+	}
+
+	/**
+	 * Swaps the internal buffer with the specified buffer.
+	 * This method doesn't copy the buffer and the its contents will be rewritten by {@link fill()} or {@link feed(byte[])} method.
+	 */
+	public void wrap(byte[] buffer) {
+		wrap(buffer, 0, buffer.length);
+	}
+
+	/**
+	 * Swaps the internal buffer with the specified buffer.
+	 * This method doesn't copy the buffer and the its contents will be rewritten by {@link fill()} or {@link feed(byte[])} method.
+	 */
+	public void wrap(byte[] buffer, int offset, int length) {
+		impl.buffer = buffer;
+		impl.offset = offset;
+		impl.filled = length;
 	}
 
-	public void reserveBuffer(int size) {
-		if(buffer.length - used >= size) {
+	/**
+	 * Fills the internal using the input stream.
+	 * @return false if the stream is null or stream.read returns <= 0.
+	 */
+	public boolean fill() throws IOException {
+		return impl.fill();
+	}
+
+
+	/**
+	 * Returns the iterator that calls {@link next()} method repeatedly.
+	 */
+	public Iterator<MessagePackObject> iterator() {
+		return new UnpackIterator(this);
+	}
+
+	/**
+	 * Deserializes one object and returns it.
+	 * @return {@link UnpackResult#isFinished()} returns false if the buffer is insufficient to deserialize one object.
+	 */
+	public UnpackResult next() throws IOException, UnpackException {
+		UnpackResult result = new UnpackResult();
+		impl.next(result);
+		return result;
+	}
+
+	/**
+	 * Deserializes one object and returns it.
+	 * @return false if the buffer is insufficient to deserialize one object.
+	 */
+	public boolean next(UnpackResult result) throws IOException, UnpackException {
+		return impl.next(result);
+	}
+
+
+	/**
+	 * Reserve free space of the internal buffer at least specified size and expands {@link getBufferCapacity()}.
+	 */
+	public void reserveBuffer(int require) {
+		if(impl.buffer == null) {
+			int nextSize = (bufferReserveSize < require) ? require : bufferReserveSize;
+			impl.buffer = new byte[nextSize];
 			return;
 		}
-		/*
-		if(used == parsed && buffer.length >= size) {
-			// rewind buffer
-			used = 0;
-			offset = 0;
+
+		if(impl.filled <= impl.offset) {
+			// rewind the buffer
+			impl.filled = 0;
+			impl.offset = 0;
+		}
+
+		if(impl.buffer.length - impl.filled >= require) {
 			return;
 		}
-		*/
 
-		int nextSize = buffer.length * 2;
-		while(nextSize < size + used) {
+		int nextSize = impl.buffer.length * 2;
+		int notParsed = impl.filled - impl.offset;
+		while(nextSize < require + notParsed) {
 			nextSize *= 2;
 		}
 
 		byte[] tmp = new byte[nextSize];
-		System.arraycopy(buffer, offset, tmp, 0, used - offset);
+		System.arraycopy(impl.buffer, impl.offset, tmp, 0, impl.filled - impl.offset);
 
-		buffer = tmp;
-		used -= offset;
-		offset = 0;
+		impl.buffer = tmp;
+		impl.filled = notParsed;
+		impl.offset = 0;
 	}
 
+	/**
+	 * Returns the internal buffer.
+	 */
 	public byte[] getBuffer() {
-		return buffer;
+		return impl.buffer;
 	}
 
-	public int getBufferOffset() {
-		return used;
+	/**
+	 * Returns the size of free space of the internal buffer.
+	 */
+	public int getBufferCapacity() {
+		return impl.buffer.length - impl.filled;
 	}
 
-	public int getBufferCapacity() {
-		return buffer.length - used;
+	/**
+	 * Returns the offset of free space in the internal buffer.
+	 */
+	public int getBufferOffset() {
+		return impl.filled;
 	}
 
+	/**
+	 * Moves front the offset of the free space in the internal buffer.
+	 * Call this method after fill the buffer manually using {@link reserveBuffer()}, {@link getBuffer()}, {@link getBufferOffset()} and {@link getBufferCapacity()} methods.
+	 */
 	public void bufferConsumed(int size) {
-		used += size;
+		impl.filled += size;
 	}
 
-	public void feed(ByteBuffer buffer) {
-		int length = buffer.remaining();
-		if (length == 0) return;
-		reserveBuffer(length);
-		buffer.get(this.buffer, this.offset, length);
-		bufferConsumed(length);
+	/**
+	 * Deserializes one object upto the offset of the internal buffer.
+	 * Call {@link reset()} method before calling this method again.
+	 * @return true if one object is deserialized. Use {@link getData()} to get the deserialized object.
+	 */
+	public boolean execute() throws UnpackException {
+		int noffset = impl.execute(impl.buffer, impl.offset, impl.filled);
+		if(noffset <= impl.offset) {
+			return false;
+		}
+		parsed += noffset - impl.offset;
+		impl.offset = noffset;
+		return impl.isFinished();
 	}
 
-	public void feed(byte[] buffer) {
-		feed(buffer, 0, buffer.length);
-	}
 
-	public void feed(byte[] buffer, int offset, int length) {
-		reserveBuffer(length);
-		System.arraycopy(buffer, offset, this.buffer, this.offset, length);
-		bufferConsumed(length);
+	/**
+	 * Deserializes one object over the specified buffer.
+	 * This method doesn't use the internal buffer.
+	 * Use {@link isFinished()} method to known a object is ready to get.
+	 * Call {@link reset()} method before calling this method again.
+	 * @return offset position that is parsed.
+	 */
+	public int execute(byte[] buffer) throws UnpackException {
+		return execute(buffer, 0, buffer.length);
 	}
 
-	public boolean fill() throws IOException {
-		if(stream == null) {
-			return false;
-		}
-		reserveBuffer(bufferReserveSize);
-		int rl = stream.read(getBuffer(), getBufferOffset(), getBufferCapacity());
-		if(rl <= 0) {
-			return false;
+	/**
+	 * Deserializes one object over the specified buffer.
+	 * This method doesn't use the internal buffer.
+	 * Use {@link isFinished()} method to known a object is ready to get.
+	 * Call {@link reset()} method before calling this method again.
+	 * @return offset position that is parsed.
+	 */
+	public int execute(byte[] buffer, int offset, int length) throws UnpackException {
+		int noffset = impl.execute(buffer, offset + impl.offset, length);
+		impl.offset = noffset - offset;
+		if(impl.isFinished()) {
+			impl.resetState();
 		}
-		bufferConsumed(rl);
-		return true;
-	}
-
-	public Iterator<Object> iterator() {
-		return new UnpackIterator(this);
+		return noffset;
 	}
 
-	public boolean execute() throws UnpackException {
-		int noffset = super.execute(buffer, offset, used);
-		if(noffset <= offset) {
-			return false;
-		}
-		parsed += noffset - offset;
-		offset = noffset;
-		return super.isFinished();
+	/**
+	 * Gets the object deserialized by {@link execute(byte[])} method.
+	 */
+	public MessagePackObject getData() {
+		return impl.getData();
 	}
 
-	public Object getData() {
-		return super.getData();
+	/**
+	 * Returns true if an object is ready to get with {@link getData()} method.
+	 */
+	public boolean isFinished() {
+		return impl.isFinished();
 	}
 
+	/**
+	 * Resets the internal state of the unpacker.
+	 */
 	public void reset() {
-		super.reset();
-		parsed = 0;
+		impl.reset();
 	}
 
 	public int getMessageSize() {
-		return parsed - offset + used;
+		return parsed - impl.offset + impl.filled;
 	}
 
 	public int getParsedSize() {
@@ -167,88 +405,168 @@ public class Unpacker extends UnpackerImpl implements Iterable<Object> {
 	}
 
 	public int getNonParsedSize() {
-		return used - offset;
+		return impl.filled - impl.offset;
 	}
 
 	public void skipNonparsedBuffer(int size) {
-		offset += size;
+		impl.offset += size;
 	}
 
 	public void removeNonparsedBuffer() {
-		used = offset;
+		impl.filled = impl.offset;
 	}
 
-	/*
-	public static class Context {
-		private boolean finished;
-		private Object data;
-		private int offset;
-		private UnpackerImpl impl;
 
-		public Context()
-		{
-			this.finished = false;
-			this.impl = new UnpackerImpl();
-		}
+	/**
+	 * Gets one {@code byte} value from the buffer.
+	 * This method calls {@link fill()} method if needed.
+	 * @throws MessageTypeException the first value of the buffer is not a {@code byte}.
+	 */
+	public byte unpackByte() throws IOException, MessageTypeException {
+		return impl.unpackByte();
+	}
 
-		public boolean isFinished()
-		{
-			return finished;
-		}
+	/**
+	 * Gets one {@code short} value from the buffer.
+	 * This method calls {@link fill()} method if needed.
+	 * @throws MessageTypeException the first value of the buffer is not a {@code short}.
+	 */
+	public short unpackShort() throws IOException, MessageTypeException {
+		return impl.unpackShort();
+	}
 
-		public Object getData()
-		{
-			return data;
-		}
+	/**
+	 * Gets one {@code int} value from the buffer.
+	 * This method calls {@link fill()} method if needed.
+	 * @throws MessageTypeException the first value of the buffer is not a {@code int}.
+	 */
+	public int unpackInt() throws IOException, MessageTypeException {
+		return impl.unpackInt();
+	}
 
-		int getOffset()
-		{
-			return offset;
-		}
+	/**
+	 * Gets one {@code long} value from the buffer.
+	 * This method calls {@link fill()} method if needed.
+	 * @throws MessageTypeException the first value of the buffer is not a {@code long}.
+	 */
+	public long unpackLong() throws IOException, MessageTypeException {
+		return impl.unpackLong();
+	}
 
-		void setFinished(boolean finished)
-		{
-			this.finished = finished;
-		}
+	/**
+	 * Gets one {@code BigInteger} value from the buffer.
+	 * This method calls {@link fill()} method if needed.
+	 * @throws MessageTypeException the first value of the buffer is not a {@code BigInteger}.
+	 */
+	public BigInteger unpackBigInteger() throws IOException, MessageTypeException {
+		return impl.unpackBigInteger();
+	}
 
-		void setData(Object data)
-		{
-			this.data = data;
-		}
+	/**
+	 * Gets one {@code float} value from the buffer.
+	 * This method calls {@link fill()} method if needed.
+	 * @throws MessageTypeException the first value of the buffer is not a {@code float}.
+	 */
+	public float unpackFloat() throws IOException, MessageTypeException {
+		return impl.unpackFloat();
+	}
 
-		void setOffset(int offset)
-		{
-			this.offset = offset;
-		}
+	/**
+	 * Gets one {@code double} value from the buffer.
+	 * This method calls {@link fill()} method if needed.
+	 * @throws MessageTypeException the first value of the buffer is not a {@code double}.
+	 */
+	public double unpackDouble() throws IOException, MessageTypeException {
+		return impl.unpackDouble();
+	}
 
-		UnpackerImpl getImpl()
-		{
-			return impl;
-		}
+	/**
+	 * Gets one {@code null} value from the buffer.
+	 * This method calls {@link fill()} method if needed.
+	 * @throws MessageTypeException the first value of the buffer is not a {@code null}.
+	 */
+	public Object unpackNull() throws IOException, MessageTypeException {
+		return impl.unpackNull();
 	}
 
-	public static int unpack(Context ctx, byte[] buffer) throws UnpackException
-	{
-		return unpack(ctx, buffer, 0, buffer.length);
+	/**
+	 * Gets one {@code boolean} value from the buffer.
+	 * This method calls {@link fill()} method if needed.
+	 * @throws MessageTypeException the first value of the buffer is not a {@code boolean}.
+	 */
+	public boolean unpackBoolean() throws IOException, MessageTypeException {
+		return impl.unpackBoolean();
 	}
 
-	public static int unpack(Context ctx, byte[] buffer, int offset, int length) throws UnpackException
-	{
-		UnpackerImpl impl = ctx.getImpl();
-		int noffset = impl.execute(buffer, offset + ctx.getOffset(), length);
-		ctx.setOffset(noffset - offset);
-		if(impl.isFinished()) {
-			ctx.setData(impl.getData());
-			ctx.setFinished(false);
-			impl.reset();
-		} else {
-			ctx.setData(null);
-			ctx.setFinished(true);
-		}
-		int parsed = noffset - offset;
-		ctx.setOffset(parsed);
-		return noffset;
+	/**
+	 * Gets one array header from the buffer.
+	 * This method calls {@link fill()} method if needed.
+	 * @return the length of the map. There are {@code retval} objects to get.
+	 * @throws MessageTypeException the first value of the buffer is not a array.
+	 */
+	public int unpackArray() throws IOException, MessageTypeException {
+		return impl.unpackArray();
+	}
+
+	/**
+	 * Gets one map header from the buffer.
+	 * This method calls {@link fill()} method if needed.
+	 * @return the length of the map. There are {@code retval * 2} objects to get.
+	 * @throws MessageTypeException the first value of the buffer is not a map.
+	 */
+	public int unpackMap() throws IOException, MessageTypeException {
+		return impl.unpackMap();
+	}
+
+	/**
+	 * Gets one raw header from the buffer.
+	 * This method calls {@link fill()} method if needed.
+	 * @return the length of the raw bytes. There are {@code retval} bytes to get.
+	 * @throws MessageTypeException the first value of the buffer is not a raw bytes.
+	 */
+	public int unpackRaw() throws IOException, MessageTypeException {
+		return impl.unpackRaw();
+	}
+
+	/**
+	 * Gets one raw body from the buffer.
+	 * This method calls {@link fill()} method if needed.
+	 */
+	public byte[] unpackRawBody(int length) throws IOException {
+		return impl.unpackRawBody(length);
+	}
+
+	/**
+	 * Gets one raw bytes from the buffer.
+	 * This method calls {@link fill()} method if needed.
+	 */
+	public byte[] unpackByteArray() throws IOException {
+		return impl.unpackByteArray();
+	}
+
+	/**
+	 * Gets one {@code String} value from the buffer.
+	 * This method calls {@link fill()} method if needed.
+	 * @throws MessageTypeException the first value of the buffer is not a {@code String}.
+	 */
+	final public String unpackString() throws IOException, MessageTypeException {
+		return impl.unpackString();
+	}
+
+	/**
+	 * Gets one {@code Object} value from the buffer.
+	 * This method calls {@link fill()} method if needed.
+	 */
+	final public MessagePackObject unpackObject() throws IOException {
+		return impl.unpackObject();
+	}
+
+	final public void unpack(MessageUnpackable obj) throws IOException, MessageTypeException {
+		obj.messageUnpack(this);
+	}
+
+	final public boolean tryUnpackNull() throws IOException {
+		return impl.tryUnpackNull();
 	}
-	*/
 }
 
diff --git a/java/src/main/java/org/msgpack/impl/UnpackerImpl.java b/java/src/main/java/org/msgpack/UnpackerImpl.java
index adc62b0..6a7085f 100644
--- a/java/src/main/java/org/msgpack/impl/UnpackerImpl.java
+++ b/java/src/main/java/org/msgpack/UnpackerImpl.java
@@ -15,14 +15,11 @@
 //    See the License for the specific language governing permissions and
 //    limitations under the License.
 //
-package org.msgpack.impl;
+package org.msgpack;
 
 import java.nio.ByteBuffer;
-//import java.math.BigInteger;
-import org.msgpack.*;
-import org.msgpack.schema.GenericSchema;
-import org.msgpack.schema.IMapSchema;
-import org.msgpack.schema.IArraySchema;
+import java.math.BigInteger;
+import org.msgpack.object.*;
 
 public class UnpackerImpl {
 	static final int CS_HEADER      = 0x00;
@@ -47,7 +44,7 @@ public class UnpackerImpl {
 	static final int CT_MAP_KEY     = 0x01;
 	static final int CT_MAP_VALUE   = 0x02;
 
-	static final int MAX_STACK_SIZE = 16;
+	static final int MAX_STACK_SIZE = 32;
 
 	private int cs;
 	private int trail;
@@ -55,53 +52,45 @@ public class UnpackerImpl {
 	private int[]    stack_ct       = new int[MAX_STACK_SIZE];
 	private int[]    stack_count    = new int[MAX_STACK_SIZE];
 	private Object[] stack_obj      = new Object[MAX_STACK_SIZE];
-	private Schema[] stack_schema   = new Schema[MAX_STACK_SIZE];
 	private int top_ct;
 	private int top_count;
 	private Object top_obj;
-	private Schema top_schema;
 	private ByteBuffer castBuffer   = ByteBuffer.allocate(8);
 	private boolean finished = false;
-	private Object data = null;
+	private MessagePackObject data = null;
 
-	private static final Schema GENERIC_SCHEMA = new GenericSchema();
-	private Schema rootSchema;
-
-	protected UnpackerImpl()
-	{
-		setSchema(GENERIC_SCHEMA);
-	}
-
-	protected void setSchema(Schema schema)
+	public UnpackerImpl()
 	{
-		this.rootSchema = schema;
 		reset();
 	}
 
-	protected Object getData()
+	public final MessagePackObject getData()
 	{
 		return data;
 	}
 
-	protected boolean isFinished()
+	public final boolean isFinished()
 	{
 		return finished;
 	}
 
-	protected void reset()
-	{
+	public final void resetState() {
 		cs = CS_HEADER;
 		top = -1;
-		finished = false;
-		data = null;
 		top_ct = 0;
 		top_count = 0;
 		top_obj = null;
-		top_schema = rootSchema;
+	}
+
+	public final void reset()
+	{
+		resetState();
+		finished = false;
+		data = null;
 	}
 
 	@SuppressWarnings("unchecked")
-	protected int execute(byte[] src, int off, int length) throws UnpackException
+	public final int execute(byte[] src, int off, int length) throws UnpackException
 	{
 		if(off >= length) { return off; }
 
@@ -123,20 +112,20 @@ public class UnpackerImpl {
 	
 					if((b & 0x80) == 0) {  // Positive Fixnum
 						//System.out.println("positive fixnum "+b);
-						obj = top_schema.createFromByte((byte)b);
+						obj = IntegerType.create((byte)b);
 						break _push;
 					}
 	
 					if((b & 0xe0) == 0xe0) {  // Negative Fixnum
 						//System.out.println("negative fixnum "+b);
-						obj = top_schema.createFromByte((byte)b);
+						obj = IntegerType.create((byte)b);
 						break _push;
 					}
 	
 					if((b & 0xe0) == 0xa0) {  // FixRaw
 						trail = b & 0x1f;
 						if(trail == 0) {
-							obj = top_schema.createFromRaw(new byte[0], 0, 0);
+							obj = RawType.create(new byte[0]);
 							break _push;
 						}
 						cs = ACS_RAW_VALUE;
@@ -147,22 +136,20 @@ public class UnpackerImpl {
 						if(top >= MAX_STACK_SIZE) {
 							throw new UnpackException("parse error");
 						}
-						if(!(top_schema instanceof IArraySchema)) {
-							throw new RuntimeException("type error");
-						}
 						count = b & 0x0f;
 						//System.out.println("fixarray count:"+count);
-						obj = new Object[count];
-						if(count == 0) { break _push; }  // FIXME check IArraySchema
+						obj = new MessagePackObject[count];
+						if(count == 0) {
+							obj = ArrayType.create((MessagePackObject[])obj);
+							break _push;
+						}
 						++top;
 						stack_obj[top]    = top_obj;
 						stack_ct[top]     = top_ct;
 						stack_count[top]  = top_count;
-						stack_schema[top] = top_schema;
 						top_obj    = obj;
 						top_ct     = CT_ARRAY_ITEM;
 						top_count  = count;
-						top_schema = ((IArraySchema)top_schema).getElementSchema(0);
 						break _header_again;
 					}
 	
@@ -170,34 +157,32 @@ public class UnpackerImpl {
 						if(top >= MAX_STACK_SIZE) {
 							throw new UnpackException("parse error");
 						}
-						if(!(top_schema instanceof IMapSchema)) {
-							throw new RuntimeException("type error");
-						}
 						count = b & 0x0f;
-						obj = new Object[count*2];
-						if(count == 0) { break _push; }  // FIXME check IMapSchema
+						obj = new MessagePackObject[count*2];
+						if(count == 0) {
+							obj = MapType.create((MessagePackObject[])obj);
+							break _push;
+						}
 						//System.out.println("fixmap count:"+count);
 						++top;
 						stack_obj[top]    = top_obj;
 						stack_ct[top]     = top_ct;
 						stack_count[top]  = top_count;
-						stack_schema[top] = top_schema;
 						top_obj    = obj;
 						top_ct     = CT_MAP_KEY;
 						top_count  = count;
-						top_schema = ((IMapSchema)top_schema).getKeySchema();
 						break _header_again;
 					}
 	
 					switch(b & 0xff) {    // FIXME
 					case 0xc0:  // nil
-						obj = top_schema.createFromNil();
+						obj = NilType.create();
 						break _push;
 					case 0xc2:  // false
-						obj = top_schema.createFromBoolean(false);
+						obj = BooleanType.create(false);
 						break _push;
 					case 0xc3:  // true
-						obj = top_schema.createFromBoolean(true);
+						obj = BooleanType.create(true);
 						break _push;
 					case 0xca:  // float
 					case 0xcb:  // double
@@ -241,13 +226,13 @@ public class UnpackerImpl {
 					case CS_FLOAT:
 						castBuffer.rewind();
 						castBuffer.put(src, n, 4);
-						obj = top_schema.createFromFloat( castBuffer.getFloat(0) );
+						obj = FloatType.create( castBuffer.getFloat(0) );
 						//System.out.println("float "+obj);
 						break _push;
 					case CS_DOUBLE:
 						castBuffer.rewind();
 						castBuffer.put(src, n, 8);
-						obj = top_schema.createFromDouble( castBuffer.getDouble(0) );
+						obj = FloatType.create( castBuffer.getDouble(0) );
 						//System.out.println("double "+obj);
 						break _push;
 					case CS_UINT_8:
@@ -255,7 +240,7 @@ public class UnpackerImpl {
 						//System.out.println(src[n]);
 						//System.out.println(src[n+1]);
 						//System.out.println(src[n-1]);
-						obj = top_schema.createFromShort( (short)((src[n]) & 0xff) );
+						obj = IntegerType.create( (short)((src[n]) & 0xff) );
 						//System.out.println("uint8 "+obj);
 						break _push;
 					case CS_UINT_16:
@@ -263,13 +248,13 @@ public class UnpackerImpl {
 						//System.out.println(src[n+1]);
 						castBuffer.rewind();
 						castBuffer.put(src, n, 2);
-						obj = top_schema.createFromInt( ((int)castBuffer.getShort(0)) & 0xffff );
+						obj = IntegerType.create( ((int)castBuffer.getShort(0)) & 0xffff );
 						//System.out.println("uint 16 "+obj);
 						break _push;
 					case CS_UINT_32:
 						castBuffer.rewind();
 						castBuffer.put(src, n, 4);
-						obj = top_schema.createFromLong( ((long)castBuffer.getInt(0)) & 0xffffffffL );
+						obj = IntegerType.create( ((long)castBuffer.getInt(0)) & 0xffffffffL );
 						//System.out.println("uint 32 "+obj);
 						break _push;
 					case CS_UINT_64:
@@ -278,38 +263,36 @@ public class UnpackerImpl {
 						{
 							long o = castBuffer.getLong(0);
 							if(o < 0) {
-								// FIXME
-								//obj = GenericBigInteger.valueOf(o & 0x7fffffffL).setBit(31);
-								throw new UnpackException("uint 64 bigger than 0x7fffffff is not supported");
+								obj = IntegerType.create(new BigInteger(1, castBuffer.array()));
 							} else {
-								obj = top_schema.createFromLong( o );
+								obj = IntegerType.create(o);
 							}
 						}
 						break _push;
 					case CS_INT_8:
-						obj = top_schema.createFromByte(  src[n] );
+						obj = IntegerType.create( src[n] );
 						break _push;
 					case CS_INT_16:
 						castBuffer.rewind();
 						castBuffer.put(src, n, 2);
-						obj = top_schema.createFromShort( castBuffer.getShort(0) );
+						obj = IntegerType.create( castBuffer.getShort(0) );
 						break _push;
 					case CS_INT_32:
 						castBuffer.rewind();
 						castBuffer.put(src, n, 4);
-						obj = top_schema.createFromInt( castBuffer.getInt(0) );
+						obj = IntegerType.create( castBuffer.getInt(0) );
 						break _push;
 					case CS_INT_64:
 						castBuffer.rewind();
 						castBuffer.put(src, n, 8);
-						obj = top_schema.createFromLong( castBuffer.getLong(0) );
+						obj = IntegerType.create( castBuffer.getLong(0) );
 						break _push;
 					case CS_RAW_16:
 						castBuffer.rewind();
 						castBuffer.put(src, n, 2);
 						trail = ((int)castBuffer.getShort(0)) & 0xffff;
 						if(trail == 0) {
-							obj = top_schema.createFromRaw(new byte[0], 0, 0);
+							obj = RawType.create(new byte[0]);
 							break _push;
 						}
 						cs = ACS_RAW_VALUE;
@@ -320,104 +303,100 @@ public class UnpackerImpl {
 						// FIXME overflow check
 						trail = castBuffer.getInt(0) & 0x7fffffff;
 						if(trail == 0) {
-							obj = top_schema.createFromRaw(new byte[0], 0, 0);
+							obj = RawType.create(new byte[0]);
 							break _push;
 						}
 						cs = ACS_RAW_VALUE;
-					case ACS_RAW_VALUE:
-						obj = top_schema.createFromRaw(src, n, trail);
+						break _fixed_trail_again;
+					case ACS_RAW_VALUE: {
+							byte[] raw = new byte[trail];
+							System.arraycopy(src, n, raw, 0, trail);
+							obj = RawType.create(raw);
+						}
 						break _push;
 					case CS_ARRAY_16:
 						if(top >= MAX_STACK_SIZE) {
 							throw new UnpackException("parse error");
 						}
-						if(!(top_schema instanceof IArraySchema)) {
-							throw new RuntimeException("type error");
-						}
 						castBuffer.rewind();
 						castBuffer.put(src, n, 2);
 						count = ((int)castBuffer.getShort(0)) & 0xffff;
-						obj = new Object[count];
-						if(count == 0) { break _push; }  // FIXME check IArraySchema
+						obj = new MessagePackObject[count];
+						if(count == 0) {
+							obj = ArrayType.create((MessagePackObject[])obj);
+							break _push;
+						}
 						++top;
 						stack_obj[top]    = top_obj;
 						stack_ct[top]     = top_ct;
 						stack_count[top]  = top_count;
-						stack_schema[top] = top_schema;
 						top_obj    = obj;
 						top_ct     = CT_ARRAY_ITEM;
 						top_count  = count;
-						top_schema = ((IArraySchema)top_schema).getElementSchema(0);
 						break _header_again;
 					case CS_ARRAY_32:
 						if(top >= MAX_STACK_SIZE) {
 							throw new UnpackException("parse error");
 						}
-						if(!(top_schema instanceof IArraySchema)) {
-							throw new RuntimeException("type error");
-						}
 						castBuffer.rewind();
 						castBuffer.put(src, n, 4);
 						// FIXME overflow check
 						count = castBuffer.getInt(0) & 0x7fffffff;
-						obj = new Object[count];
-						if(count == 0) { break _push; }  // FIXME check IArraySchema
+						obj = new MessagePackObject[count];
+						if(count == 0) {
+							obj = ArrayType.create((MessagePackObject[])obj);
+							break _push;
+						}
 						++top;
 						stack_obj[top]    = top_obj;
 						stack_ct[top]     = top_ct;
 						stack_count[top]  = top_count;
-						stack_schema[top] = top_schema;
 						top_obj    = obj;
 						top_ct     = CT_ARRAY_ITEM;
 						top_count  = count;
-						top_schema = ((IArraySchema)top_schema).getElementSchema(0);
 						break _header_again;
 					case CS_MAP_16:
 						if(top >= MAX_STACK_SIZE) {
 							throw new UnpackException("parse error");
 						}
-						if(!(top_schema instanceof IMapSchema)) {
-							throw new RuntimeException("type error");
-						}
 						castBuffer.rewind();
 						castBuffer.put(src, n, 2);
 						count = ((int)castBuffer.getShort(0)) & 0xffff;
-						obj = new Object[count*2];
-						if(count == 0) { break _push; }  // FIXME check IMapSchema
+						obj = new MessagePackObject[count*2];
+						if(count == 0) {
+							obj = MapType.create((MessagePackObject[])obj);
+							break _push;
+						}
 						//System.out.println("fixmap count:"+count);
 						++top;
 						stack_obj[top]    = top_obj;
 						stack_ct[top]     = top_ct;
 						stack_count[top]  = top_count;
-						stack_schema[top] = top_schema;
 						top_obj    = obj;
 						top_ct     = CT_MAP_KEY;
 						top_count  = count;
-						top_schema = ((IMapSchema)top_schema).getKeySchema();
 						break _header_again;
 					case CS_MAP_32:
 						if(top >= MAX_STACK_SIZE) {
 							throw new UnpackException("parse error");
 						}
-						if(!(top_schema instanceof IMapSchema)) {
-							throw new RuntimeException("type error");
-						}
 						castBuffer.rewind();
 						castBuffer.put(src, n, 4);
 						// FIXME overflow check
 						count = castBuffer.getInt(0) & 0x7fffffff;
-						obj = new Object[count*2];
-						if(count == 0) { break _push; }  // FIXME check IMapSchema
+						obj = new MessagePackObject[count*2];
+						if(count == 0) {
+							obj = MapType.create((MessagePackObject[])obj);
+							break _push;
+						}
 						//System.out.println("fixmap count:"+count);
 						++top;
 						stack_obj[top]    = top_obj;
 						stack_ct[top]     = top_ct;
 						stack_count[top]  = top_count;
-						stack_schema[top] = top_schema;
 						top_obj    = obj;
 						top_ct     = CT_MAP_KEY;
 						top_count  = count;
-						top_schema = ((IMapSchema)top_schema).getKeySchema();
 						break _header_again;
 					default:
 						throw new UnpackException("parse error");
@@ -432,7 +411,7 @@ public class UnpackerImpl {
 				//System.out.println("push top:"+top);
 				if(top == -1) {
 					++i;
-					data = obj;
+					data = (MessagePackObject)obj;
 					finished = true;
 					break _out;
 				}
@@ -446,14 +425,10 @@ public class UnpackerImpl {
 							top_obj    = stack_obj[top];
 							top_ct     = stack_ct[top];
 							top_count  = stack_count[top];
-							top_schema = stack_schema[top];
-							obj = ((IArraySchema)top_schema).createFromArray(ar);
+							obj = ArrayType.create((MessagePackObject[])ar);
 							stack_obj[top] = null;
-							stack_schema[top] = null;
 							--top;
 							break _push;
-						} else {
-							top_schema = ((IArraySchema)stack_schema[top]).getElementSchema(ar.length - top_count);
 						}
 						break _header_again;
 					}
@@ -462,7 +437,6 @@ public class UnpackerImpl {
 						Object[] mp = (Object[])top_obj;
 						mp[mp.length - top_count*2] = obj;
 						top_ct = CT_MAP_VALUE;
-						top_schema = ((IMapSchema)stack_schema[top]).getValueSchema();
 						break _header_again;
 					}
 				case CT_MAP_VALUE: {
@@ -473,10 +447,8 @@ public class UnpackerImpl {
 							top_obj    = stack_obj[top];
 							top_ct     = stack_ct[top];
 							top_count  = stack_count[top];
-							top_schema = stack_schema[top];
-							obj = ((IMapSchema)top_schema).createFromMap(mp);
+							obj = MapType.create((MessagePackObject[])mp);
 							stack_obj[top] = null;
-							stack_schema[top] = null;
 							--top;
 							break _push;
 						}
diff --git a/java/src/main/java/org/msgpack/object/ArrayType.java b/java/src/main/java/org/msgpack/object/ArrayType.java
new file mode 100644
index 0000000..36134dc
--- /dev/null
+++ b/java/src/main/java/org/msgpack/object/ArrayType.java
@@ -0,0 +1,81 @@
+//
+// MessagePack for Java
+//
+// Copyright (C) 2009-2010 FURUHASHI Sadayuki
+//
+//    Licensed under the Apache License, Version 2.0 (the "License");
+//    you may not use this file except in compliance with the License.
+//    You may obtain a copy of the License at
+//
+//        http://www.apache.org/licenses/LICENSE-2.0
+//
+//    Unless required by applicable law or agreed to in writing, software
+//    distributed under the License is distributed on an "AS IS" BASIS,
+//    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+//    See the License for the specific language governing permissions and
+//    limitations under the License.
+//
+package org.msgpack.object;
+
+import java.util.List;
+import java.util.Arrays;
+import java.io.IOException;
+import org.msgpack.*;
+
+public class ArrayType extends MessagePackObject {
+	private MessagePackObject[] array;
+
+	ArrayType(MessagePackObject[] array) {
+		this.array = array;
+	}
+
+	public static ArrayType create(MessagePackObject[] array) {
+		return new ArrayType(array);
+	}
+
+	@Override
+	public boolean isArrayType() {
+		return true;
+	}
+
+	@Override
+	public MessagePackObject[] asArray() {
+		return array;
+	}
+
+	@Override
+	public List<MessagePackObject> asList() {
+		return Arrays.asList(array);
+	}
+
+	@Override
+	public void messagePack(Packer pk) throws IOException {
+		pk.packArray(array.length);
+		for(int i=0; i < array.length; i++) {
+			array[i].messagePack(pk);
+		}
+	}
+
+	@Override
+	public boolean equals(Object obj) {
+		if(obj.getClass() != getClass()) {
+			return false;
+		}
+		return Arrays.equals(((ArrayType)obj).array, array);
+	}
+
+	@Override
+	public int hashCode() {
+		return array.hashCode();
+	}
+
+	@Override
+	public Object clone() {
+		MessagePackObject[] copy = new MessagePackObject[array.length];
+		for(int i=0; i < array.length; i++) {
+			copy[i] = (MessagePackObject)array[i].clone();
+		}
+		return copy;
+	}
+}
+
diff --git a/java/src/main/java/org/msgpack/object/BigIntegerTypeIMPL.java b/java/src/main/java/org/msgpack/object/BigIntegerTypeIMPL.java
new file mode 100644
index 0000000..b29879f
--- /dev/null
+++ b/java/src/main/java/org/msgpack/object/BigIntegerTypeIMPL.java
@@ -0,0 +1,131 @@
+//
+// MessagePack for Java
+//
+// Copyright (C) 2009-2010 FURUHASHI Sadayuki
+//
+//    Licensed under the Apache License, Version 2.0 (the "License");
+//    you may not use this file except in compliance with the License.
+//    You may obtain a copy of the License at
+//
+//        http://www.apache.org/licenses/LICENSE-2.0
+//
+//    Unless required by applicable law or agreed to in writing, software
+//    distributed under the License is distributed on an "AS IS" BASIS,
+//    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+//    See the License for the specific language governing permissions and
+//    limitations under the License.
+//
+package org.msgpack.object;
+
+import java.math.BigInteger;
+import java.io.IOException;
+import org.msgpack.*;
+
+class BigIntegerTypeIMPL extends IntegerType {
+	private BigInteger value;
+
+	BigIntegerTypeIMPL(BigInteger value) {
+		this.value = value;
+	}
+
+	@Override
+	public byte asByte() {
+		if(value.compareTo(BigInteger.valueOf((long)Byte.MAX_VALUE)) > 0) {
+			throw new MessageTypeException("type error");
+		}
+		return value.byteValue();
+	}
+
+	@Override
+	public short asShort() {
+		if(value.compareTo(BigInteger.valueOf((long)Short.MAX_VALUE)) > 0) {
+			throw new MessageTypeException("type error");
+		}
+		return value.shortValue();
+	}
+
+	@Override
+	public int asInt() {
+		if(value.compareTo(BigInteger.valueOf((long)Integer.MAX_VALUE)) > 0) {
+			throw new MessageTypeException("type error");
+		}
+		return value.intValue();
+	}
+
+	@Override
+	public long asLong() {
+		if(value.compareTo(BigInteger.valueOf(Long.MAX_VALUE)) > 0) {
+			throw new MessageTypeException("type error");
+		}
+		return value.longValue();
+	}
+
+	@Override
+	public BigInteger asBigInteger() {
+		return value;
+	}
+
+	@Override
+	public byte byteValue() {
+		return value.byteValue();
+	}
+
+	@Override
+	public short shortValue() {
+		return value.shortValue();
+	}
+
+	@Override
+	public int intValue() {
+		return value.intValue();
+	}
+
+	@Override
+	public long longValue() {
+		return value.longValue();
+	}
+
+	@Override
+	public BigInteger bigIntegerValue() {
+		return value;
+	}
+
+	@Override
+	public float floatValue() {
+		return value.floatValue();
+	}
+
+	@Override
+	public double doubleValue() {
+		return value.doubleValue();
+	}
+
+	@Override
+	public void messagePack(Packer pk) throws IOException {
+		pk.packBigInteger(value);
+	}
+
+	@Override
+	public boolean equals(Object obj) {
+		if(obj.getClass() != getClass()) {
+			if(obj.getClass() == ShortIntegerTypeIMPL.class) {
+				return BigInteger.valueOf(((ShortIntegerTypeIMPL)obj).longValue()).equals(value);
+			} else if(obj.getClass() == LongIntegerTypeIMPL.class) {
+				return BigInteger.valueOf(((LongIntegerTypeIMPL)obj).longValue()).equals(value);
+			}
+			return false;
+		}
+		return ((BigIntegerTypeIMPL)obj).value.equals(value);
+	}
+
+	@Override
+	public int hashCode() {
+		return value.hashCode();
+	}
+
+	@Override
+	public Object clone() {
+		return new BigIntegerTypeIMPL(value);
+	}
+}
+
diff --git a/java/src/main/java/org/msgpack/object/BooleanType.java b/java/src/main/java/org/msgpack/object/BooleanType.java
new file mode 100644
index 0000000..65bd42b
--- /dev/null
+++ b/java/src/main/java/org/msgpack/object/BooleanType.java
@@ -0,0 +1,71 @@
+//
+// MessagePack for Java
+//
+// Copyright (C) 2009-2010 FURUHASHI Sadayuki
+//
+//    Licensed under the Apache License, Version 2.0 (the "License");
+//    you may not use this file except in compliance with the License.
+//    You may obtain a copy of the License at
+//
+//        http://www.apache.org/licenses/LICENSE-2.0
+//
+//    Unless required by applicable law or agreed to in writing, software
+//    distributed under the License is distributed on an "AS IS" BASIS,
+//    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+//    See the License for the specific language governing permissions and
+//    limitations under the License.
+//
+package org.msgpack.object;
+
+import java.io.IOException;
+import org.msgpack.*;
+
+public class BooleanType extends MessagePackObject {
+	private boolean value;
+
+	BooleanType(boolean value) {
+		this.value = value;
+	}
+
+	public static BooleanType create(boolean value) {
+		return new BooleanType(value);
+	}
+
+	@Override
+	public boolean isBooleanType() {
+		return true;
+	}
+
+	@Override
+	public boolean asBoolean() {
+		return value;
+	}
+
+	@Override
+	public void messagePack(Packer pk) throws IOException {
+		pk.packBoolean(value);
+	}
+
+	@Override
+	public boolean equals(Object obj) {
+		if(obj.getClass() != getClass()) {
+			return false;
+		}
+		return ((BooleanType)obj).value == value;
+	}
+
+	@Override
+	public int hashCode() {
+		if(value) {
+			return 1231;
+		} else {
+			return 1237;
+		}
+	}
+
+	@Override
+	public Object clone() {
+		return new BooleanType(value);
+	}
+}
+
diff --git a/java/src/main/java/org/msgpack/object/DoubleTypeIMPL.java b/java/src/main/java/org/msgpack/object/DoubleTypeIMPL.java
new file mode 100644
index 0000000..fd38089
--- /dev/null
+++ b/java/src/main/java/org/msgpack/object/DoubleTypeIMPL.java
@@ -0,0 +1,101 @@
+//
+// MessagePack for Java
+//
+// Copyright (C) 2009-2010 FURUHASHI Sadayuki
+//
+//    Licensed under the Apache License, Version 2.0 (the "License");
+//    you may not use this file except in compliance with the License.
+//    You may obtain a copy of the License at
+//
+//        http://www.apache.org/licenses/LICENSE-2.0
+//
+//    Unless required by applicable law or agreed to in writing, software
+//    distributed under the License is distributed on an "AS IS" BASIS,
+//    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+//    See the License for the specific language governing permissions and
+//    limitations under the License.
+//
+package org.msgpack.object;
+
+import java.math.BigInteger;
+import java.io.IOException;
+import org.msgpack.*;
+
+class DoubleTypeIMPL extends FloatType {
+	private double value;
+
+	public DoubleTypeIMPL(double value) {
+		this.value = value;
+	}
+
+	@Override
+	public float asFloat() {
+		// FIXME check overflow, underflow?
+		return (float)value;
+	}
+
+	@Override
+	public double asDouble() {
+		return value;
+	}
+
+	@Override
+	public byte byteValue() {
+		return (byte)value;
+	}
+
+	@Override
+	public short shortValue() {
+		return (short)value;
+	}
+
+	@Override
+	public int intValue() {
+		return (int)value;
+	}
+
+	@Override
+	public long longValue() {
+		return (long)value;
+	}
+
+	@Override
+	public BigInteger bigIntegerValue() {
+		return BigInteger.valueOf((long)value);
+	}
+
+	@Override
+	public float floatValue() {
+		return (float)value;
+	}
+
+	@Override
+	public double doubleValue() {
+		return (double)value;
+	}
+
+	@Override
+	public void messagePack(Packer pk) throws IOException {
+		pk.packDouble(value);
+	}
+
+	@Override
+	public boolean equals(Object obj) {
+		if(obj.getClass() != getClass()) {
+			return false;
+		}
+		return ((DoubleTypeIMPL)obj).value == value;
+	}
+
+	@Override
+	public int hashCode() {
+		long v = Double.doubleToLongBits(value);
+		return (int)(v^(v>>>32));
+	}
+
+	@Override
+	public Object clone() {
+		return new DoubleTypeIMPL(value);
+	}
+}
+
diff --git a/java/src/main/java/org/msgpack/schema/IMapSchema.java b/java/src/main/java/org/msgpack/object/FloatType.java
index 3a2f556..514efd5 100644
--- a/java/src/main/java/org/msgpack/schema/IMapSchema.java
+++ b/java/src/main/java/org/msgpack/object/FloatType.java
@@ -15,13 +15,22 @@
 //    See the License for the specific language governing permissions and
 //    limitations under the License.
 //
-package org.msgpack.schema;
+package org.msgpack.object;
 
-import org.msgpack.Schema;
+import org.msgpack.*;
 
-public interface IMapSchema {
-	public Schema getKeySchema();
-	public Schema getValueSchema();
-	public Object createFromMap(Object[] obj);
+public abstract class FloatType extends MessagePackObject {
+	@Override
+	public boolean isFloatType() {
+		return true;
+	}
+
+	public static FloatType create(float value) {
+		return new FloatTypeIMPL(value);
+	}
+
+	public static FloatType create(double value) {
+		return new DoubleTypeIMPL(value);
+	}
 }
 
diff --git a/java/src/main/java/org/msgpack/object/FloatTypeIMPL.java b/java/src/main/java/org/msgpack/object/FloatTypeIMPL.java
new file mode 100644
index 0000000..1d79961
--- /dev/null
+++ b/java/src/main/java/org/msgpack/object/FloatTypeIMPL.java
@@ -0,0 +1,94 @@
+//
+// MessagePack for Java
+//
+// Copyright (C) 2009-2010 FURUHASHI Sadayuki
+//
+//    Licensed under the Apache License, Version 2.0 (the "License");
+//    you may not use this file except in compliance with the License.
+//    You may obtain a copy of the License at
+//
+//        http://www.apache.org/licenses/LICENSE-2.0
+//
+//    Unless required by applicable law or agreed to in writing, software
+//    distributed under the License is distributed on an "AS IS" BASIS,
+//    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+//    See the License for the specific language governing permissions and
+//    limitations under the License.
+//
+package org.msgpack.object;
+
+import java.math.BigInteger;
+import java.io.IOException;
+import org.msgpack.*;
+
+class FloatTypeIMPL extends FloatType {
+	private float value;
+
+	public FloatTypeIMPL(float value) {
+		this.value = value;
+	}
+
+	@Override
+	public float asFloat() {
+		return value;
+	}
+
+	@Override
+	public double asDouble() {
+		return (double)value;
+	}
+
+	@Override
+	public byte byteValue() {
+		return (byte)value;
+	}
+
+	@Override
+	public short shortValue() {
+		return (short)value;
+	}
+
+	@Override
+	public int intValue() {
+		return (int)value;
+	}
+
+	@Override
+	public long longValue() {
+		return (long)value;
+	}
+
+	@Override
+	public float floatValue() {
+		return (float)value;
+	}
+
+	@Override
+	public double doubleValue() {
+		return (double)value;
+	}
+
+	@Override
+	public void messagePack(Packer pk) throws IOException {
+		pk.packFloat(value);
+	}
+
+	@Override
+	public boolean equals(Object obj) {
+		if(obj.getClass() != getClass()) {
+			return false;
+		}
+		return ((FloatTypeIMPL)obj).value == value;
+	}
+
+	@Override
+	public int hashCode() {
+		return Float.floatToIntBits(value);
+	}
+
+	@Override
+	public Object clone() {
+		return new FloatTypeIMPL(value);
+	}
+}
+
diff --git a/java/src/main/java/org/msgpack/object/IntegerType.java b/java/src/main/java/org/msgpack/object/IntegerType.java
new file mode 100644
index 0000000..43357e8
--- /dev/null
+++ b/java/src/main/java/org/msgpack/object/IntegerType.java
@@ -0,0 +1,49 @@
+//
+// MessagePack for Java
+//
+// Copyright (C) 2009-2010 FURUHASHI Sadayuki
+//
+//    Licensed under the Apache License, Version 2.0 (the "License");
+//    you may not use this file except in compliance with the License.
+//    You may obtain a copy of the License at
+//
+//        http://www.apache.org/licenses/LICENSE-2.0
+//
+//    Unless required by applicable law or agreed to in writing, software
+//    distributed under the License is distributed on an "AS IS" BASIS,
+//    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+//    See the License for the specific language governing permissions and
+//    limitations under the License.
+//
+package org.msgpack.object;
+
+import java.math.BigInteger;
+import org.msgpack.*;
+
+public abstract class IntegerType extends MessagePackObject {
+	@Override
+	public boolean isIntegerType() {
+		return true;
+	}
+
+	public static IntegerType create(byte value) {
+		return new ShortIntegerTypeIMPL((int)value);
+	}
+
+	public static IntegerType create(short value) {
+		return new ShortIntegerTypeIMPL((int)value);
+	}
+
+	public static IntegerType create(int value) {
+		return new ShortIntegerTypeIMPL(value);
+	}
+
+	public static IntegerType create(long value) {
+		return new LongIntegerTypeIMPL(value);
+	}
+
+	public static IntegerType create(BigInteger value) {
+		return new BigIntegerTypeIMPL(value);
+	}
+}
+
diff --git a/java/src/main/java/org/msgpack/object/LongIntegerTypeIMPL.java b/java/src/main/java/org/msgpack/object/LongIntegerTypeIMPL.java
new file mode 100644
index 0000000..d052e77
--- /dev/null
+++ b/java/src/main/java/org/msgpack/object/LongIntegerTypeIMPL.java
@@ -0,0 +1,128 @@
+//
+// MessagePack for Java
+//
+// Copyright (C) 2009-2010 FURUHASHI Sadayuki
+//
+//    Licensed under the Apache License, Version 2.0 (the "License");
+//    you may not use this file except in compliance with the License.
+//    You may obtain a copy of the License at
+//
+//        http://www.apache.org/licenses/LICENSE-2.0
+//
+//    Unless required by applicable law or agreed to in writing, software
+//    distributed under the License is distributed on an "AS IS" BASIS,
+//    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+//    See the License for the specific language governing permissions and
+//    limitations under the License.
+//
+package org.msgpack.object;
+
+import java.math.BigInteger;
+import java.io.IOException;
+import org.msgpack.*;
+
+class LongIntegerTypeIMPL extends IntegerType {
+	private long value;
+
+	LongIntegerTypeIMPL(long value) {
+		this.value = value;
+	}
+
+	@Override
+	public byte asByte() {
+		if(value > (long)Byte.MAX_VALUE) {
+			throw new MessageTypeException("type error");
+		}
+		return (byte)value;
+	}
+
+	@Override
+	public short asShort() {
+		if(value > (long)Short.MAX_VALUE) {
+			throw new MessageTypeException("type error");
+		}
+		return (short)value;
+	}
+
+	@Override
+	public int asInt() {
+		if(value > (long)Integer.MAX_VALUE) {
+			throw new MessageTypeException("type error");
+		}
+		return (int)value;
+	}
+
+	@Override
+	public long asLong() {
+		return value;
+	}
+
+	@Override
+	public BigInteger asBigInteger() {
+		return BigInteger.valueOf(value);
+	}
+
+	@Override
+	public byte byteValue() {
+		return (byte)value;
+	}
+
+	@Override
+	public short shortValue() {
+		return (short)value;
+	}
+
+	@Override
+	public int intValue() {
+		return (int)value;
+	}
+
+	@Override
+	public long longValue() {
+		return (long)value;
+	}
+
+	@Override
+	public BigInteger bigIntegerValue() {
+		return BigInteger.valueOf(value);
+	}
+
+	@Override
+	public float floatValue() {
+		return (float)value;
+	}
+
+	@Override
+	public double doubleValue() {
+		return (double)value;
+	}
+
+	@Override
+	public void messagePack(Packer pk) throws IOException {
+		pk.packLong(value);
+	}
+
+	@Override
+	public boolean equals(Object obj) {
+		if(obj.getClass() != getClass()) {
+			if(obj.getClass() == ShortIntegerTypeIMPL.class) {
+				return value == ((ShortIntegerTypeIMPL)obj).longValue();
+			} else if(obj.getClass() == BigIntegerTypeIMPL.class) {
+				return BigInteger.valueOf(value).equals(((BigIntegerTypeIMPL)obj).bigIntegerValue());
+			}
+			return false;
+		}
+		return ((LongIntegerTypeIMPL)obj).value == value;
+	}
+
+	@Override
+	public int hashCode() {
+		return (int)(value^(value>>>32));
+	}
+
+	@Override
+	public Object clone() {
+		return new LongIntegerTypeIMPL(value);
+	}
+}
+
diff --git a/java/src/main/java/org/msgpack/object/MapType.java b/java/src/main/java/org/msgpack/object/MapType.java
new file mode 100644
index 0000000..148c0bf
--- /dev/null
+++ b/java/src/main/java/org/msgpack/object/MapType.java
@@ -0,0 +1,84 @@
+//
+// MessagePack for Java
+//
+// Copyright (C) 2009-2010 FURUHASHI Sadayuki
+//
+//    Licensed under the Apache License, Version 2.0 (the "License");
+//    you may not use this file except in compliance with the License.
+//    You may obtain a copy of the License at
+//
+//        http://www.apache.org/licenses/LICENSE-2.0
+//
+//    Unless required by applicable law or agreed to in writing, software
+//    distributed under the License is distributed on an "AS IS" BASIS,
+//    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+//    See the License for the specific language governing permissions and
+//    limitations under the License.
+//
+package org.msgpack.object;
+
+import java.util.HashMap;
+import java.util.Map;
+import java.util.Arrays;
+import java.io.IOException;
+import org.msgpack.*;
+
+public class MapType extends MessagePackObject {
+	private MessagePackObject[] map;
+
+	MapType(MessagePackObject[] map) {
+		this.map = map;
+	}
+
+	public static MapType create(MessagePackObject[] map) {
+		return new MapType(map);
+	}
+
+	@Override
+	public boolean isMapType() {
+		return true;
+	}
+
+	@Override
+	public Map<MessagePackObject, MessagePackObject> asMap() {
+		HashMap<MessagePackObject, MessagePackObject> m = new HashMap(map.length / 2);
+		int i = 0;
+		while(i < map.length) {
+			MessagePackObject k = map[i++];
+			MessagePackObject v = map[i++];
+			m.put(k, v);
+		}
+		return m;
+	}
+
+	@Override
+	public void messagePack(Packer pk) throws IOException {
+		pk.packMap(map.length / 2);
+		for(int i=0; i < map.length; i++) {
+			map[i].messagePack(pk);
+		}
+	}
+
+	@Override
+	public boolean equals(Object obj) {
+		if(obj.getClass() != getClass()) {
+			return false;
+		}
+		return Arrays.equals(((MapType)obj).map, map);
+	}
+
+	@Override
+	public int hashCode() {
+		return map.hashCode();
+	}
+
+	@Override
+	public Object clone() {
+		MessagePackObject[] copy = new MessagePackObject[map.length];
+		for(int i=0; i < map.length; i++) {
+			copy[i] = (MessagePackObject)map[i].clone();
+		}
+		return copy;
+	}
+}
+
diff --git a/java/src/main/java/org/msgpack/object/NilType.java b/java/src/main/java/org/msgpack/object/NilType.java
new file mode 100644
index 0000000..c443db1
--- /dev/null
+++ b/java/src/main/java/org/msgpack/object/NilType.java
@@ -0,0 +1,60 @@
+//
+// MessagePack for Java
+//
+// Copyright (C) 2009-2010 FURUHASHI Sadayuki
+//
+//    Licensed under the Apache License, Version 2.0 (the "License");
+//    you may not use this file except in compliance with the License.
+//    You may obtain a copy of the License at
+//
+//        http://www.apache.org/licenses/LICENSE-2.0
+//
+//    Unless required by applicable law or agreed to in writing, software
+//    distributed under the License is distributed on an "AS IS" BASIS,
+//    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+//    See the License for the specific language governing permissions and
+//    limitations under the License.
+//
+package org.msgpack.object;
+
+import java.io.IOException;
+import org.msgpack.*;
+
+public class NilType extends MessagePackObject {
+	private final static NilType INSTANCE = new NilType();
+
+	public static NilType create() {
+		return INSTANCE;
+	}
+
+	private NilType() { }
+
+	@Override
+	public boolean isNil() {
+		return true;
+	}
+
+	@Override
+	public void messagePack(Packer pk) throws IOException {
+		pk.packNil();
+	}
+
+	@Override
+	public boolean equals(Object obj) {
+		if(obj.getClass() != getClass()) {
+			return false;
+		}
+		return true;
+	}
+
+	@Override
+	public int hashCode() {
+		return 0;
+	}
+
+	@Override
+	public Object clone() {
+		return INSTANCE;
+	}
+}
+
diff --git a/java/src/main/java/org/msgpack/object/RawType.java b/java/src/main/java/org/msgpack/object/RawType.java
new file mode 100644
index 0000000..26f6e0d
--- /dev/null
+++ b/java/src/main/java/org/msgpack/object/RawType.java
@@ -0,0 +1,90 @@
+//
+// MessagePack for Java
+//
+// Copyright (C) 2009-2010 FURUHASHI Sadayuki
+//
+//    Licensed under the Apache License, Version 2.0 (the "License");
+//    you may not use this file except in compliance with the License.
+//    You may obtain a copy of the License at
+//
+//        http://www.apache.org/licenses/LICENSE-2.0
+//
+//    Unless required by applicable law or agreed to in writing, software
+//    distributed under the License is distributed on an "AS IS" BASIS,
+//    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+//    See the License for the specific language governing permissions and
+//    limitations under the License.
+//
+package org.msgpack.object;
+
+import java.util.Arrays;
+import java.io.IOException;
+import org.msgpack.*;
+
+public class RawType extends MessagePackObject {
+	private byte[] bytes;
+
+	RawType(byte[] bytes) {
+		this.bytes = bytes;
+	}
+
+	RawType(String str) {
+		try {
+			this.bytes = str.getBytes("UTF-8");
+		} catch (Exception e) {
+			throw new MessageTypeException("type error");
+		}
+	}
+
+	public static RawType create(byte[] bytes) {
+		return new RawType(bytes);
+	}
+
+	public static RawType create(String str) {
+		return new RawType(str);
+	}
+
+	@Override
+	public boolean isRawType() {
+		return true;
+	}
+
+	@Override
+	public byte[] asByteArray() {
+		return bytes;
+	}
+
+	@Override
+	public String asString() {
+		try {
+			return new String(bytes, "UTF-8");
+		} catch (Exception e) {
+			throw new MessageTypeException("type error");
+		}
+	}
+
+	@Override
+	public void messagePack(Packer pk) throws IOException {
+		pk.packRaw(bytes.length);
+		pk.packRawBody(bytes);
+	}
+
+	@Override
+	public boolean equals(Object obj) {
+		if(obj.getClass() != getClass()) {
+			return false;
+		}
+		return Arrays.equals(((RawType)obj).bytes, bytes);
+	}
+
+	@Override
+	public int hashCode() {
+		return bytes.hashCode();
+	}
+
+	@Override
+	public Object clone() {
+		return new RawType((byte[])bytes.clone());
+	}
+}
+
diff --git a/java/src/main/java/org/msgpack/object/ShortIntegerTypeIMPL.java b/java/src/main/java/org/msgpack/object/ShortIntegerTypeIMPL.java
new file mode 100644
index 0000000..dbed426
--- /dev/null
+++ b/java/src/main/java/org/msgpack/object/ShortIntegerTypeIMPL.java
@@ -0,0 +1,125 @@
+//
+// MessagePack for Java
+//
+// Copyright (C) 2009-2010 FURUHASHI Sadayuki
+//
+//    Licensed under the Apache License, Version 2.0 (the "License");
+//    you may not use this file except in compliance with the License.
+//    You may obtain a copy of the License at
+//
+//        http://www.apache.org/licenses/LICENSE-2.0
+//
+//    Unless required by applicable law or agreed to in writing, software
+//    distributed under the License is distributed on an "AS IS" BASIS,
+//    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+//    See the License for the specific language governing permissions and
+//    limitations under the License.
+//
+package org.msgpack.object;
+
+import java.math.BigInteger;
+import java.io.IOException;
+import org.msgpack.*;
+
+class ShortIntegerTypeIMPL extends IntegerType {
+	private int value;
+
+	ShortIntegerTypeIMPL(int value) {
+		this.value = value;
+	}
+
+	@Override
+	public byte asByte() {
+		if(value > (int)Byte.MAX_VALUE) {
+			throw new MessageTypeException("type error");
+		}
+		return (byte)value;
+	}
+
+	@Override
+	public short asShort() {
+		if(value > (int)Short.MAX_VALUE) {
+			throw new MessageTypeException("type error");
+		}
+		return (short)value;
+	}
+
+	@Override
+	public int asInt() {
+		return value;
+	}
+
+	@Override
+	public long asLong() {
+		return value;
+	}
+
+	@Override
+	public BigInteger asBigInteger() {
+		return BigInteger.valueOf((long)value);
+	}
+
+	@Override
+	public byte byteValue() {
+		return (byte)value;
+	}
+
+	@Override
+	public short shortValue() {
+		return (short)value;
+	}
+
+	@Override
+	public int intValue() {
+		return (int)value;
+	}
+
+	@Override
+	public long longValue() {
+		return (long)value;
+	}
+
+	@Override
+	public BigInteger bigIntegerValue() {
+		return BigInteger.valueOf((long)value);
+	}
+
+	@Override
+	public float floatValue() {
+		return (float)value;
+	}
+
+	@Override
+	public double doubleValue() {
+		return (double)value;
+	}
+
+	@Override
+	public void messagePack(Packer pk) throws IOException {
+		pk.packInt(value);
+	}
+
+	@Override
+	public boolean equals(Object obj) {
+		if(obj.getClass() != getClass()) {
+			if(obj.getClass() == LongIntegerTypeIMPL.class) {
+				return (long)value == ((LongIntegerTypeIMPL)obj).longValue();
+			} else if(obj.getClass() == BigIntegerTypeIMPL.class) {
+				return ((BigIntegerTypeIMPL)obj).bigIntegerValue().equals(BigInteger.valueOf((long)value));
+			}
+			return false;
+		}
+		return ((ShortIntegerTypeIMPL)obj).value == value;
+	}
+
+	@Override
+	public int hashCode() {
+		return value;
+	}
+
+	@Override
+	public Object clone() {
+		return new ShortIntegerTypeIMPL(value);
+	}
+}
+
diff --git a/java/src/main/java/org/msgpack/package-info.java b/java/src/main/java/org/msgpack/package-info.java
new file mode 100644
index 0000000..7e9b8a2
--- /dev/null
+++ b/java/src/main/java/org/msgpack/package-info.java
@@ -0,0 +1,8 @@
+/**
+ * MessagePack is a binary-based efficient object serialization library.
+ * It enables to exchange structured objects between many languages like JSON.
+ * But unlike JSON, it is very fast and small.
+ *
+ * Use {@link Packer} to serialize and {@link Unpacker} to deserialize.
+ */
+package org.msgpack;
diff --git a/java/src/main/java/org/msgpack/schema/ArraySchema.java b/java/src/main/java/org/msgpack/schema/ArraySchema.java
deleted file mode 100644
index fd47143..0000000
--- a/java/src/main/java/org/msgpack/schema/ArraySchema.java
+++ /dev/null
@@ -1,125 +0,0 @@
-//
-// MessagePack for Java
-//
-// Copyright (C) 2009-2010 FURUHASHI Sadayuki
-//
-//    Licensed under the Apache License, Version 2.0 (the "License");
-//    you may not use this file except in compliance with the License.
-//    You may obtain a copy of the License at
-//
-//        http://www.apache.org/licenses/LICENSE-2.0
-//
-//    Unless required by applicable law or agreed to in writing, software
-//    distributed under the License is distributed on an "AS IS" BASIS,
-//    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-//    See the License for the specific language governing permissions and
-//    limitations under the License.
-//
-package org.msgpack.schema;
-
-import java.util.Arrays;
-import java.util.Collection;
-import java.util.Set;
-import java.util.List;
-import java.util.ArrayList;
-import java.util.RandomAccess;
-import java.io.IOException;
-import org.msgpack.*;
-
-public class ArraySchema extends Schema implements IArraySchema {
-	private Schema elementSchema;
-
-	public ArraySchema(Schema elementSchema)
-	{
-		super("array");
-		this.elementSchema = elementSchema;
-	}
-
-	@Override
-	public String getFullName()
-	{
-		return "List<"+elementSchema.getFullName()+">";
-	}
-
-	@Override
-	public String getExpression()
-	{
-		return "(array "+elementSchema.getExpression()+")";
-	}
-
-	@Override
-	@SuppressWarnings("unchecked")
-	public void pack(Packer pk, Object obj) throws IOException
-	{
-		if(obj instanceof List) {
-			ArrayList<Object> d = (ArrayList<Object>)obj;
-			pk.packArray(d.size());
-			if(obj instanceof RandomAccess) {
-				for(int i=0; i < d.size(); ++i) {
-					elementSchema.pack(pk, d.get(i));
-				}
-			} else {
-				for(Object e : d) {
-					elementSchema.pack(pk, e);
-				}
-			}
-
-		} else if(obj instanceof Set) {
-			Set<Object> d = (Set<Object>)obj;
-			pk.packArray(d.size());
-			for(Object e : d) {
-				elementSchema.pack(pk, e);
-			}
-
-		} else if(obj == null) {
-			pk.packNil();
-
-		} else {
-			throw MessageTypeException.invalidConvert(obj, this);
-		}
-	}
-
-	@Override
-	@SuppressWarnings("unchecked")
-	public Object convert(Object obj) throws MessageTypeException
-	{
-		if(obj instanceof List) {
-			List d = (List)obj;
-			ArrayList ar = new ArrayList(d.size());
-			if(obj instanceof RandomAccess) {
-				for(int i=0; i < d.size(); ++i) {
-					ar.add( elementSchema.convert(d.get(i)) );
-				}
-			} else {
-				for(Object e : d) {
-					ar.add( elementSchema.convert(e) );
-				}
-			}
-			return ar;
-
-		} else if(obj instanceof Collection) {
-			Collection d = (Collection)obj;
-			ArrayList ar = new ArrayList(d.size());
-			for(Object e : (Collection)obj) {
-				ar.add( elementSchema.convert(e) );
-			}
-			return ar;
-
-		} else {
-			throw MessageTypeException.invalidConvert(obj, this);
-		}
-	}
-
-	@Override
-	public Schema getElementSchema(int index)
-	{
-		return elementSchema;
-	}
-
-	@Override
-	public Object createFromArray(Object[] obj)
-	{
-		return Arrays.asList(obj);
-	}
-}
-
diff --git a/java/src/main/java/org/msgpack/schema/ByteSchema.java b/java/src/main/java/org/msgpack/schema/ByteSchema.java
deleted file mode 100644
index 9ee6a82..0000000
--- a/java/src/main/java/org/msgpack/schema/ByteSchema.java
+++ /dev/null
@@ -1,89 +0,0 @@
-//
-// MessagePack for Java
-//
-// Copyright (C) 2009-2010 FURUHASHI Sadayuki
-//
-//    Licensed under the Apache License, Version 2.0 (the "License");
-//    you may not use this file except in compliance with the License.
-//    You may obtain a copy of the License at
-//
-//        http://www.apache.org/licenses/LICENSE-2.0
-//
-//    Unless required by applicable law or agreed to in writing, software
-//    distributed under the License is distributed on an "AS IS" BASIS,
-//    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-//    See the License for the specific language governing permissions and
-//    limitations under the License.
-//
-package org.msgpack.schema;
-
-import java.io.IOException;
-import org.msgpack.*;
-
-public class ByteSchema extends Schema {
-	public ByteSchema() {
-		super("Byte");
-	}
-
-	@Override
-	public String getExpression() {
-		return "byte";
-	}
-
-	@Override
-	public void pack(Packer pk, Object obj) throws IOException {
-		if(obj instanceof Number) {
-			pk.packByte( ((Number)obj).byteValue() );
-
-		} else if(obj == null) {
-			pk.packNil();
-
-		} else {
-			throw MessageTypeException.invalidConvert(obj, this);
-		}
-	}
-
-	@Override
-	public Object convert(Object obj) throws MessageTypeException {
-		if(obj instanceof Byte) {
-			return obj;
-
-		} else if(obj instanceof Number) {
-			return ((Number)obj).byteValue();
-
-		} else {
-			throw MessageTypeException.invalidConvert(obj, this);
-		}
-	}
-
-	@Override
-	public Object createFromByte(byte v) {
-		return (byte)v;
-	}
-
-	@Override
-	public Object createFromShort(short v) {
-		return (byte)v;
-	}
-
-	@Override
-	public Object createFromInt(int v) {
-		return (byte)v;
-	}
-
-	@Override
-	public Object createFromLong(long v) {
-		return (byte)v;
-	}
-
-	@Override
-	public Object createFromFloat(float v) {
-		return (byte)v;
-	}
-
-	@Override
-	public Object createFromDouble(double v) {
-		return (byte)v;
-	}
-}
-
diff --git a/java/src/main/java/org/msgpack/schema/ClassGenerator.java b/java/src/main/java/org/msgpack/schema/ClassGenerator.java
deleted file mode 100644
index 061dcbb..0000000
--- a/java/src/main/java/org/msgpack/schema/ClassGenerator.java
+++ /dev/null
@@ -1,241 +0,0 @@
-//
-// MessagePack for Java
-//
-// Copyright (C) 2009-2010 FURUHASHI Sadayuki
-//
-//    Licensed under the Apache License, Version 2.0 (the "License");
-//    you may not use this file except in compliance with the License.
-//    You may obtain a copy of the License at
-//
-//        http://www.apache.org/licenses/LICENSE-2.0
-//
-//    Unless required by applicable law or agreed to in writing, software
-//    distributed under the License is distributed on an "AS IS" BASIS,
-//    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-//    See the License for the specific language governing permissions and
-//    limitations under the License.
-//
-package org.msgpack.schema;
-
-import java.util.ArrayList;
-import java.util.List;
-import java.io.IOException;
-import java.io.File;
-import java.io.Writer;
-import org.msgpack.*;
-
-public class ClassGenerator {
-	private ClassSchema schema;
-	private Writer writer;
-	private int indent;
-
-	private ClassGenerator(Writer writer) {
-		this.writer = writer;
-		this.indent = 0;
-	}
-
-	public static void write(Schema schema, Writer dest) throws IOException {
-		if(!(schema instanceof ClassSchema)) {
-			throw new RuntimeException("schema is not class schema");
-		}
-		ClassSchema cs = (ClassSchema)schema;
-		new ClassGenerator(dest).run(cs);
-	}
-
-	private void run(ClassSchema cs) throws IOException {
-		List<ClassSchema> subclasses = new ArrayList<ClassSchema>();
-		for(FieldSchema f : cs.getFields()) {
-			findSubclassSchema(subclasses, f.getSchema());
-		}
-
-		for(ClassSchema sub : subclasses) {
-			sub.setNamespace(cs.getNamespace());
-			sub.setImports(cs.getImports());
-		}
-
-		this.schema = cs;
-
-		writeHeader();
-
-		writeClass();
-
-		for(ClassSchema sub : subclasses) {
-			this.schema = sub;
-			writeSubclass();
-		}
-
-		writeFooter();
-
-		this.schema = null;
-		writer.flush();
-	}
-
-	private void findSubclassSchema(List<ClassSchema> dst, Schema s) {
-		if(s instanceof ClassSchema) {
-			ClassSchema cs = (ClassSchema)s;
-			if(!dst.contains(cs)) { dst.add(cs); }
-			for(FieldSchema f : cs.getFields()) {
-				findSubclassSchema(dst, f.getSchema());
-			}
-		} else if(s instanceof ArraySchema) {
-			ArraySchema as = (ArraySchema)s;
-			findSubclassSchema(dst, as.getElementSchema(0));
-		} else if(s instanceof MapSchema) {
-			MapSchema as = (MapSchema)s;
-			findSubclassSchema(dst, as.getKeySchema());
-			findSubclassSchema(dst, as.getValueSchema());
-		}
-	}
-
-	private void writeHeader() throws IOException {
-		if(schema.getNamespace() != null) {
-			line("package "+schema.getNamespace()+";");
-			line();
-		}
-		line("import java.util.*;");
-		line("import java.io.*;");
-		line("import org.msgpack.*;");
-		line("import org.msgpack.schema.ClassSchema;");
-		line("import org.msgpack.schema.FieldSchema;");
-	}
-
-	private void writeFooter() throws IOException {
-		line();
-	}
-
-	private void writeClass() throws IOException {
-		line();
-		line("public final class "+schema.getName()+" implements MessagePackable, MessageMergeable");
-		line("{");
-		pushIndent();
-			writeSchema();
-			writeMemberVariables();
-			writeMemberFunctions();
-		popIndent();
-		line("}");
-	}
-
-	private void writeSubclass() throws IOException {
-		line();
-		line("final class "+schema.getName()+" implements MessagePackable, MessageMergeable");
-		line("{");
-		pushIndent();
-			writeSchema();
-			writeMemberVariables();
-			writeMemberFunctions();
-		popIndent();
-		line("}");
-	}
-
-	private void writeSchema() throws IOException {
-		line("private static final ClassSchema _SCHEMA = (ClassSchema)Schema.load(\""+schema.getExpression()+"\");");
-		line("public static ClassSchema getSchema() { return _SCHEMA; }");
-	}
-
-	private void writeMemberVariables() throws IOException {
-		line();
-		for(FieldSchema f : schema.getFields()) {
-			line("public "+f.getSchema().getFullName()+" "+f.getName()+";");
-		}
-	}
-
-	private void writeMemberFunctions() throws IOException {
-		// void messagePack(Packer pk)
-		// boolean equals(Object obj)
-		// int hashCode()
-		// void set(int _index, Object _value)
-		// Object get(int _index);
-		// getXxx()
-		// setXxx(Xxx xxx)
-		writeConstructors();
-		writeAccessors();
-		writePackFunction();
-		writeMergeFunction();
-		writeFactoryFunction();
-	}
-
-	private void writeConstructors() throws IOException {
-		line();
-		line("public "+schema.getName()+"() { }");
-	}
-
-	private void writeAccessors() throws IOException {
-		// FIXME
-		//line();
-		//for(FieldSchema f : schema.getFields()) {
-		//	line("");
-		//}
-	}
-
-	private void writePackFunction() throws IOException {
-		line();
-		line("@Override");
-		line("public void messagePack(Packer _pk) throws IOException");
-		line("{");
-		pushIndent();
-			line("_pk.packArray("+schema.getFields().length+");");
-			line("FieldSchema[] _fields = _SCHEMA.getFields();");
-			int i = 0;
-			for(FieldSchema f : schema.getFields()) {
-				line("_fields["+i+"].getSchema().pack(_pk, "+f.getName()+");");
-				++i;
-			}
-		popIndent();
-		line("}");
-	}
-
-	private void writeMergeFunction() throws IOException {
-		line();
-		line("@Override");
-		line("@SuppressWarnings(\"unchecked\")");
-		line("public void messageMerge(Object obj) throws MessageTypeException");
-		line("{");
-		pushIndent();
-			line("Object[] _source = ((List)obj).toArray();");
-			line("FieldSchema[] _fields = _SCHEMA.getFields();");
-			int i = 0;
-			for(FieldSchema f : schema.getFields()) {
-				line("if(_source.length <= "+i+") { return; } this."+f.getName()+" = ("+f.getSchema().getFullName()+")_fields["+i+"].getSchema().convert(_source["+i+"]);");
-				++i;
-			}
-		popIndent();
-		line("}");
-	}
-
-	private void writeFactoryFunction() throws IOException {
-		line();
-		line("@SuppressWarnings(\"unchecked\")");
-		line("public static "+schema.getName()+" createFromMessage(Object[] _message)");
-		line("{");
-		pushIndent();
-			line(schema.getName()+" _self = new "+schema.getName()+"();");
-			int i = 0;
-			for(FieldSchema f : schema.getFields()) {
-				line("if(_message.length <= "+i+") { return _self; } _self."+f.getName()+" = ("+f.getSchema().getFullName()+")_message["+i+"];");
-				++i;
-			}
-			line("return _self;");
-		popIndent();
-		line("}");
-	}
-
-	private void line(String str) throws IOException {
-		for(int i=0; i < indent; ++i) {
-			writer.write("\t");
-		}
-		writer.write(str+"\n");
-	}
-
-	private void line() throws IOException {
-		writer.write("\n");
-	}
-
-	private void pushIndent() {
-		indent += 1;
-	}
-
-	private void popIndent() {
-		indent -= 1;
-	}
-}
-
diff --git a/java/src/main/java/org/msgpack/schema/ClassSchema.java b/java/src/main/java/org/msgpack/schema/ClassSchema.java
deleted file mode 100644
index cd5c008..0000000
--- a/java/src/main/java/org/msgpack/schema/ClassSchema.java
+++ /dev/null
@@ -1,95 +0,0 @@
-//
-// MessagePack for Java
-//
-// Copyright (C) 2009-2010 FURUHASHI Sadayuki
-//
-//    Licensed under the Apache License, Version 2.0 (the "License");
-//    you may not use this file except in compliance with the License.
-//    You may obtain a copy of the License at
-//
-//        http://www.apache.org/licenses/LICENSE-2.0
-//
-//    Unless required by applicable law or agreed to in writing, software
-//    distributed under the License is distributed on an "AS IS" BASIS,
-//    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-//    See the License for the specific language governing permissions and
-//    limitations under the License.
-//
-package org.msgpack.schema;
-
-import java.util.Arrays;
-import java.util.List;
-import org.msgpack.*;
-
-public abstract class ClassSchema extends Schema implements IArraySchema {
-	protected FieldSchema[] fields;
-	protected List<String> imports;
-	protected String namespace;
-	protected String fqdn;
-
-	public ClassSchema(
-			String name, String namespace,
-			List<String> imports, List<FieldSchema> fields) {
-		super(name);
-		this.namespace = namespace;
-		this.imports = imports;  // FIXME clone?
-		this.fields = new FieldSchema[fields.size()];
-		System.arraycopy(fields.toArray(), 0, this.fields, 0, fields.size());
-		if(namespace == null) {
-			this.fqdn = name;
-		} else {
-			this.fqdn = namespace+"."+name;
-		}
-	}
-
-	public final FieldSchema[] getFields() {
-		return fields;
-	}
-
-	String getNamespace() {
-		return namespace;
-	}
-
-	List<String> getImports() {
-		return imports;
-	}
-
-	void setNamespace(String namespace) {
-		this.namespace = namespace;
-	}
-
-	void setImports(List<String> imports) {
-		this.imports = imports;  // FIXME clone?
-	}
-
-	//@Override
-	//public String getFullName()
-	//{
-	//	if(namespace == null) {
-	//		return getName();
-	//	} else {
-	//		return namespace+"."+getName();
-	//	}
-	//}
-
-	@Override
-	public String getExpression() {
-		StringBuffer b = new StringBuffer();
-		b.append("(class ");
-		b.append(getName());
-		if(namespace != null) {
-			b.append(" (package "+namespace+")");
-		}
-		for(FieldSchema f : fields) {
-			b.append(" "+f.getExpression());
-		}
-		b.append(")");
-		return b.toString();
-	}
-
-	public boolean equals(SpecificClassSchema o) {
-		return (namespace != null ? namespace.equals(o.getNamespace()) : o.getNamespace() == null) &&
-			getName().equals(o.getName());
-	}
-}
-
diff --git a/java/src/main/java/org/msgpack/schema/DoubleSchema.java b/java/src/main/java/org/msgpack/schema/DoubleSchema.java
deleted file mode 100644
index d53e47d..0000000
--- a/java/src/main/java/org/msgpack/schema/DoubleSchema.java
+++ /dev/null
@@ -1,84 +0,0 @@
-//
-// MessagePack for Java
-//
-// Copyright (C) 2009-2010 FURUHASHI Sadayuki
-//
-//    Licensed under the Apache License, Version 2.0 (the "License");
-//    you may not use this file except in compliance with the License.
-//    You may obtain a copy of the License at
-//
-//        http://www.apache.org/licenses/LICENSE-2.0
-//
-//    Unless required by applicable law or agreed to in writing, software
-//    distributed under the License is distributed on an "AS IS" BASIS,
-//    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-//    See the License for the specific language governing permissions and
-//    limitations under the License.
-//
-package org.msgpack.schema;
-
-import java.io.IOException;
-import org.msgpack.*;
-
-public class DoubleSchema extends Schema {
-	public DoubleSchema() {
-		super("Double");
-	}
-
-	@Override
-	public String getExpression() {
-		return "double";
-	}
-
-	@Override
-	public void pack(Packer pk, Object obj) throws IOException {
-		if(obj instanceof Number) {
-			pk.packDouble( ((Number)obj).doubleValue() );
-
-		} else if(obj == null) {
-			pk.packNil();
-
-		} else {
-			throw MessageTypeException.invalidConvert(obj, this);
-		}
-	}
-
-	@Override
-	public Object convert(Object obj) throws MessageTypeException {
-		if(obj instanceof Double) {
-			return obj;
-
-		} else if(obj instanceof Number) {
-			return ((Number)obj).doubleValue();
-
-		} else {
-			throw MessageTypeException.invalidConvert(obj, this);
-		}
-	}
-
-	@Override
-	public Object createFromByte(byte v) {
-		return (double)v;
-	}
-
-	@Override
-	public Object createFromShort(short v) {
-		return (double)v;
-	}
-
-	@Override
-	public Object createFromInt(int v) {
-		return (double)v;
-	}
-
-	@Override
-	public Object createFromFloat(float v) {
-		return (double)v;
-	}
-
-	@Override
-	public Object createFromDouble(double v) {
-		return (double)v;
-	}
-}
-
diff --git a/java/src/main/java/org/msgpack/schema/FloatSchema.java b/java/src/main/java/org/msgpack/schema/FloatSchema.java
deleted file mode 100644
index 2777521..0000000
--- a/java/src/main/java/org/msgpack/schema/FloatSchema.java
+++ /dev/null
@@ -1,84 +0,0 @@
-//
-// MessagePack for Java
-//
-// Copyright (C) 2009-2010 FURUHASHI Sadayuki
-//
-//    Licensed under the Apache License, Version 2.0 (the "License");
-//    you may not use this file except in compliance with the License.
-//    You may obtain a copy of the License at
-//
-//        http://www.apache.org/licenses/LICENSE-2.0
-//
-//    Unless required by applicable law or agreed to in writing, software
-//    distributed under the License is distributed on an "AS IS" BASIS,
-//    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-//    See the License for the specific language governing permissions and
-//    limitations under the License.
-//
-package org.msgpack.schema;
-
-import java.io.IOException;
-import org.msgpack.*;
-
-public class FloatSchema extends Schema {
-	public FloatSchema() {
-		super("Float");
-	}
-
-	@Override
-	public String getExpression() {
-		return "float";
-	}
-
-	@Override
-	public void pack(Packer pk, Object obj) throws IOException {
-		if(obj instanceof Number) {
-			pk.packFloat( ((Number)obj).floatValue() );
-
-		} else if(obj == null) {
-			pk.packNil();
-
-		} else {
-			throw MessageTypeException.invalidConvert(obj, this);
-		}
-	}
-
-	@Override
-	public Object convert(Object obj) throws MessageTypeException {
-		if(obj instanceof Float) {
-			return obj;
-
-		} else if(obj instanceof Number) {
-			return ((Number)obj).floatValue();
-
-		} else {
-			throw MessageTypeException.invalidConvert(obj, this);
-		}
-	}
-
-	@Override
-	public Object createFromByte(byte v) {
-		return (float)v;
-	}
-
-	@Override
-	public Object createFromShort(short v) {
-		return (float)v;
-	}
-
-	@Override
-	public Object createFromInt(int v) {
-		return (float)v;
-	}
-
-	@Override
-	public Object createFromFloat(float v) {
-		return (float)v;
-	}
-
-	@Override
-	public Object createFromDouble(double v) {
-		return (float)v;
-	}
-}
-
diff --git a/java/src/main/java/org/msgpack/schema/GenericClassSchema.java b/java/src/main/java/org/msgpack/schema/GenericClassSchema.java
deleted file mode 100644
index ffdd4ab..0000000
--- a/java/src/main/java/org/msgpack/schema/GenericClassSchema.java
+++ /dev/null
@@ -1,91 +0,0 @@
-//
-// MessagePack for Java
-//
-// Copyright (C) 2009-2010 FURUHASHI Sadayuki
-//
-//    Licensed under the Apache License, Version 2.0 (the "License");
-//    you may not use this file except in compliance with the License.
-//    You may obtain a copy of the License at
-//
-//        http://www.apache.org/licenses/LICENSE-2.0
-//
-//    Unless required by applicable law or agreed to in writing, software
-//    distributed under the License is distributed on an "AS IS" BASIS,
-//    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-//    See the License for the specific language governing permissions and
-//    limitations under the License.
-//
-package org.msgpack.schema;
-
-import java.util.Collection;
-import java.util.List;
-import java.util.Map;
-import java.util.HashMap;
-import java.io.IOException;
-import org.msgpack.*;
-
-public class GenericClassSchema extends ClassSchema {
-	public GenericClassSchema(
-			String name, String namespace,
-			List<String> imports, List<FieldSchema> fields) {
-		super(name, namespace, imports, fields);
-	}
-
-	@Override
-	@SuppressWarnings("unchecked")
-	public void pack(Packer pk, Object obj) throws IOException {
-		if(obj instanceof Map) {
-			Map d = (Map)obj;
-			pk.packArray(fields.length);
-			for(int i=0; i < fields.length; ++i) {
-				FieldSchema f = fields[i];
-				f.getSchema().pack(pk, d.get(f.getName()));
-			}
-
-		} else if(obj == null) {
-			pk.packNil();
-
-		} else {
-			throw MessageTypeException.invalidConvert(obj, this);
-		}
-	}
-
-	@Override
-	public Object convert(Object obj) throws MessageTypeException {
-		if(obj instanceof Collection) {
-			// FIXME optimize
-			return createFromArray( ((Collection)obj).toArray() );
-
-		} else if(obj instanceof Map) {
-			HashMap<String,Object> m = new HashMap<String,Object>(fields.length);
-			Map d = (Map)obj;
-			for(int i=0; i < fields.length; ++i) {
-				FieldSchema f = fields[i];
-				String fieldName = f.getName();
-				m.put(fieldName, f.getSchema().convert(d.get(fieldName)));
-			}
-			return m;
-
-		} else {
-			throw MessageTypeException.invalidConvert(obj, this);
-		}
-	}
-
-	public Schema getElementSchema(int index) {
-		// FIXME check index < fields.length
-		return fields[index].getSchema();
-	}
-
-	public Object createFromArray(Object[] obj) {
-		HashMap<String,Object> m = new HashMap<String,Object>(fields.length);
-		int i=0;
-		for(; i < obj.length; ++i) {
-			m.put(fields[i].getName(), obj[i]);
-		}
-		for(; i < fields.length; ++i) {
-			m.put(fields[i].getName(), null);
-		}
-		return m;
-	}
-}
-
diff --git a/java/src/main/java/org/msgpack/schema/GenericSchema.java b/java/src/main/java/org/msgpack/schema/GenericSchema.java
deleted file mode 100644
index 0adf898..0000000
--- a/java/src/main/java/org/msgpack/schema/GenericSchema.java
+++ /dev/null
@@ -1,192 +0,0 @@
-//
-// MessagePack for Java
-//
-// Copyright (C) 2009-2010 FURUHASHI Sadayuki
-//
-//    Licensed under the Apache License, Version 2.0 (the "License");
-//    you may not use this file except in compliance with the License.
-//    You may obtain a copy of the License at
-//
-//        http://www.apache.org/licenses/LICENSE-2.0
-//
-//    Unless required by applicable law or agreed to in writing, software
-//    distributed under the License is distributed on an "AS IS" BASIS,
-//    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-//    See the License for the specific language governing permissions and
-//    limitations under the License.
-//
-package org.msgpack.schema;
-
-import java.util.Arrays;
-import java.util.List;
-import java.util.HashMap;
-import java.io.IOException;
-import org.msgpack.*;
-//import org.msgpack.generic.*;
-
-public class GenericSchema extends Schema implements IArraySchema, IMapSchema {
-	public GenericSchema() {
-		super("Object");
-	}
-
-	@Override
-	public String getExpression() {
-		return "object";
-	}
-
-	@Override
-	public void pack(Packer pk, Object obj) throws IOException {
-		pk.pack(obj);
-	}
-
-	@Override
-	public Object convert(Object obj) throws MessageTypeException {
-		return obj;
-	}
-
-	@Override
-	public Schema getElementSchema(int index) {
-		return this;
-	}
-
-	@Override
-	public Schema getKeySchema() {
-		return this;
-	}
-
-	@Override
-	public Schema getValueSchema() {
-		return this;
-	}
-
-	@Override
-	public Object createFromNil() {
-		return null;
-	}
-
-	@Override
-	public Object createFromBoolean(boolean v) {
-		return v;
-	}
-
-	@Override
-	public Object createFromByte(byte v) {
-		return v;
-	}
-
-	@Override
-	public Object createFromShort(short v) {
-		return v;
-	}
-
-	@Override
-	public Object createFromInt(int v) {
-		return v;
-	}
-
-	@Override
-	public Object createFromLong(long v) {
-		return v;
-	}
-
-	@Override
-	public Object createFromFloat(float v) {
-		return v;
-	}
-
-	@Override
-	public Object createFromDouble(double v) {
-		return v;
-	}
-
-	@Override
-	public Object createFromRaw(byte[] b, int offset, int length) {
-		byte[] bytes = new byte[length];
-		System.arraycopy(b, offset, bytes, 0, length);
-		return bytes;
-	}
-
-	@Override
-	public Object createFromArray(Object[] obj) {
-		return Arrays.asList(obj);
-	}
-
-	@Override
-	@SuppressWarnings("unchecked")
-	public Object createFromMap(Object[] obj) {
-		HashMap m = new HashMap(obj.length / 2);
-		int i = 0;
-		while(i < obj.length) {
-			Object k = obj[i++];
-			Object v = obj[i++];
-			m.put(k, v);
-		}
-		return m;
-	}
-
-	/*
-   @Override
-	public Object createFromNil() {
-		return null;
-	}
-
-	@Override
-	public Object createFromBoolean(boolean v) {
-		return new GenericBoolean(v);
-	}
-
-	@Override
-	public Object createFromFromByte(byte v) {
-		return new GenericByte(v);
-	}
-
-	@Override
-	public Object createFromShort(short v) {
-		return new GenericShort(v);
-	}
-
-	@Override
-	public Object createFromInt(int v) {
-		return new GenericInt(v);
-	}
-
-	@Override
-	public Object createFromLong(long v) {
-		return new GenericLong(v);
-	}
-
-	@Override
-	public Object createFromFloat(float v) {
-		return new GenericFloat(v);
-	}
-
-	@Override
-	public Object createFromDouble(double v) {
-		return new GenericDouble(v);
-	}
-
-	@Override
-	public Object createFromRaw(byte[] b, int offset, int length) {
-		return new GenericRaw(b, offset, length);
-	}
-
-	@Override
-	public Object createFromArray(Object[] obj) {
-		// FIXME GenericArray
-		return Arrays.asList(obj);
-	}
-
-	@Override
-	public Object createFromMap(Object[] obj) {
-		GenericMap m = new GenericMap(obj.length / 2);
-		int i = 0;
-		while(i < obj.length) {
-			Object k = obj[i++];
-			Object v = obj[i++];
-			m.put(k, v);
-		}
-		return m;
-	}
-	*/
-}
-
diff --git a/java/src/main/java/org/msgpack/schema/IntSchema.java b/java/src/main/java/org/msgpack/schema/IntSchema.java
deleted file mode 100644
index 5a7e281..0000000
--- a/java/src/main/java/org/msgpack/schema/IntSchema.java
+++ /dev/null
@@ -1,89 +0,0 @@
-//
-// MessagePack for Java
-//
-// Copyright (C) 2009-2010 FURUHASHI Sadayuki
-//
-//    Licensed under the Apache License, Version 2.0 (the "License");
-//    you may not use this file except in compliance with the License.
-//    You may obtain a copy of the License at
-//
-//        http://www.apache.org/licenses/LICENSE-2.0
-//
-//    Unless required by applicable law or agreed to in writing, software
-//    distributed under the License is distributed on an "AS IS" BASIS,
-//    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-//    See the License for the specific language governing permissions and
-//    limitations under the License.
-//
-package org.msgpack.schema;
-
-import java.io.IOException;
-import org.msgpack.*;
-
-public class IntSchema extends Schema {
-	public IntSchema() {
-		super("Integer");
-	}
-
-	@Override
-	public String getExpression() {
-		return "int";
-	}
-
-	@Override
-	public void pack(Packer pk, Object obj) throws IOException {
-		if(obj instanceof Number) {
-			pk.packInt( ((Number)obj).intValue() );
-
-		} else if(obj == null) {
-			pk.packNil();
-
-		} else {
-			throw MessageTypeException.invalidConvert(obj, this);
-		}
-	}
-
-	@Override
-	public Object convert(Object obj) throws MessageTypeException {
-		if(obj instanceof Integer) {
-			return obj;
-
-		} else if(obj instanceof Number) {
-			return ((Number)obj).intValue();
-
-		} else {
-			throw MessageTypeException.invalidConvert(obj, this);
-		}
-	}
-
-	@Override
-	public Object createFromByte(byte v) {
-		return (int)v;
-	}
-
-	@Override
-	public Object createFromShort(short v) {
-		return (int)v;
-	}
-
-	@Override
-	public Object createFromInt(int v) {
-		return (int)v;
-	}
-
-	@Override
-	public Object createFromLong(long v) {
-		return (int)v;
-	}
-
-	@Override
-	public Object createFromFloat(float v) {
-		return (int)v;
-	}
-
-	@Override
-	public Object createFromDouble(double v) {
-		return (int)v;
-	}
-}
-
diff --git a/java/src/main/java/org/msgpack/schema/LongSchema.java b/java/src/main/java/org/msgpack/schema/LongSchema.java
deleted file mode 100644
index 83a30e3..0000000
--- a/java/src/main/java/org/msgpack/schema/LongSchema.java
+++ /dev/null
@@ -1,89 +0,0 @@
-//
-// MessagePack for Java
-//
-// Copyright (C) 2009-2010 FURUHASHI Sadayuki
-//
-//    Licensed under the Apache License, Version 2.0 (the "License");
-//    you may not use this file except in compliance with the License.
-//    You may obtain a copy of the License at
-//
-//        http://www.apache.org/licenses/LICENSE-2.0
-//
-//    Unless required by applicable law or agreed to in writing, software
-//    distributed under the License is distributed on an "AS IS" BASIS,
-//    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-//    See the License for the specific language governing permissions and
-//    limitations under the License.
-//
-package org.msgpack.schema;
-
-import java.io.IOException;
-import org.msgpack.*;
-
-public class LongSchema extends Schema {
-	public LongSchema() {
-		super("Long");
-	}
-
-	@Override
-	public String getExpression() {
-		return "long";
-	}
-
-	@Override
-	public void pack(Packer pk, Object obj) throws IOException {
-		if(obj instanceof Number) {
-			pk.packLong( ((Number)obj).longValue() );
-
-		} else if(obj == null) {
-			pk.packNil();
-
-		} else {
-			throw MessageTypeException.invalidConvert(obj, this);
-		}
-	}
-
-	@Override
-	public Object convert(Object obj) throws MessageTypeException {
-		if(obj instanceof Long) {
-			return obj;
-
-		} else if(obj instanceof Number) {
-			return ((Number)obj).longValue();
-
-		} else {
-			throw MessageTypeException.invalidConvert(obj, this);
-		}
-	}
-
-	@Override
-	public Object createFromByte(byte v) {
-		return (long)v;
-	}
-
-	@Override
-	public Object createFromShort(short v) {
-		return (long)v;
-	}
-
-	@Override
-	public Object createFromInt(int v) {
-		return (long)v;
-	}
-
-	@Override
-	public Object createFromLong(long v) {
-		return (long)v;
-	}
-
-	@Override
-	public Object createFromFloat(float v) {
-		return (long)v;
-	}
-
-	@Override
-	public Object createFromDouble(double v) {
-		return (long)v;
-	}
-}
-
diff --git a/java/src/main/java/org/msgpack/schema/MapSchema.java b/java/src/main/java/org/msgpack/schema/MapSchema.java
deleted file mode 100644
index ba75993..0000000
--- a/java/src/main/java/org/msgpack/schema/MapSchema.java
+++ /dev/null
@@ -1,103 +0,0 @@
-//
-// MessagePack for Java
-//
-// Copyright (C) 2009-2010 FURUHASHI Sadayuki
-//
-//    Licensed under the Apache License, Version 2.0 (the "License");
-//    you may not use this file except in compliance with the License.
-//    You may obtain a copy of the License at
-//
-//        http://www.apache.org/licenses/LICENSE-2.0
-//
-//    Unless required by applicable law or agreed to in writing, software
-//    distributed under the License is distributed on an "AS IS" BASIS,
-//    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-//    See the License for the specific language governing permissions and
-//    limitations under the License.
-//
-package org.msgpack.schema;
-
-import java.util.Map;
-import java.util.HashMap;
-import java.io.IOException;
-import org.msgpack.*;
-
-public class MapSchema extends Schema implements IMapSchema {
-	private Schema keySchema;
-	private Schema valueSchema;
-
-	public MapSchema(Schema keySchema, Schema valueSchema) {
-		super("map");
-		this.keySchema = keySchema;
-		this.valueSchema = valueSchema;
-	}
-
-	@Override
-	public String getFullName() {
-		return "HashList<"+keySchema.getFullName()+", "+valueSchema.getFullName()+">";
-	}
-
-	@Override
-	public String getExpression() {
-		return "(map "+keySchema.getExpression()+" "+valueSchema.getExpression()+")";
-	}
-
-	@Override
-	@SuppressWarnings("unchecked")
-	public void pack(Packer pk, Object obj) throws IOException {
-		if(obj instanceof Map) {
-			Map<Object,Object> d = (Map<Object,Object>)obj;
-			pk.packMap(d.size());
-			for(Map.Entry<Object,Object> e : d.entrySet()) {
-				keySchema.pack(pk, e.getKey());
-				valueSchema.pack(pk, e.getValue());
-			}
-
-		} else if(obj == null) {
-			pk.packNil();
-
-		} else {
-			throw MessageTypeException.invalidConvert(obj, this);
-		}
-	}
-
-	@Override
-	@SuppressWarnings("unchecked")
-	public Object convert(Object obj) throws MessageTypeException {
-		if(obj instanceof Map) {
-			Map<Object,Object> d = (Map<Object,Object>)obj;
-			Map<Object,Object> m = new HashMap<Object,Object>();
-			for(Map.Entry<Object,Object> e : d.entrySet()) {
-				m.put(keySchema.convert(e.getKey()), valueSchema.convert(e.getValue()));
-			}
-			return m;
-
-		} else {
-			throw MessageTypeException.invalidConvert(obj, this);
-		}
-	}
-
-	@Override
-	public Schema getKeySchema() {
-		return keySchema;
-	}
-
-	@Override
-	public Schema getValueSchema() {
-		return valueSchema;
-	}
-
-	@Override
-	@SuppressWarnings("unchecked")
-	public Object createFromMap(Object[] obj) {
-		HashMap m = new HashMap(obj.length / 2);
-		int i = 0;
-		while(i < obj.length) {
-			Object k = obj[i++];
-			Object v = obj[i++];
-			m.put(k, v);
-		}
-		return m;
-	}
-}
-
diff --git a/java/src/main/java/org/msgpack/schema/RawSchema.java b/java/src/main/java/org/msgpack/schema/RawSchema.java
deleted file mode 100644
index f621e4c..0000000
--- a/java/src/main/java/org/msgpack/schema/RawSchema.java
+++ /dev/null
@@ -1,105 +0,0 @@
-//
-// MessagePack for Java
-//
-// Copyright (C) 2009-2010 FURUHASHI Sadayuki
-//
-//    Licensed under the Apache License, Version 2.0 (the "License");
-//    you may not use this file except in compliance with the License.
-//    You may obtain a copy of the License at
-//
-//        http://www.apache.org/licenses/LICENSE-2.0
-//
-//    Unless required by applicable law or agreed to in writing, software
-//    distributed under the License is distributed on an "AS IS" BASIS,
-//    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-//    See the License for the specific language governing permissions and
-//    limitations under the License.
-//
-package org.msgpack.schema;
-
-import java.nio.ByteBuffer;
-import java.io.IOException;
-import java.io.UnsupportedEncodingException;
-import org.msgpack.*;
-
-public class RawSchema extends Schema {
-	public RawSchema() {
-		super("raw");
-	}
-
-	public String getFullName() {
-		return "byte[]";
-	}
-
-	@Override
-	public void pack(Packer pk, Object obj) throws IOException {
-		// FIXME instanceof GenericObject
-		if(obj instanceof byte[]) {
-			byte[] d = (byte[])obj;
-			pk.packRaw(d.length);
-			pk.packRawBody(d);
-
-		} else if(obj instanceof ByteBuffer) {
-			ByteBuffer d = (ByteBuffer)obj;
-			if(!d.hasArray()) {
-				throw MessageTypeException.invalidConvert(obj, this);
-			}
-			pk.packRaw(d.capacity());
-			pk.packRawBody(d.array(), d.position(), d.capacity());
-
-		} else if(obj instanceof String) {
-			try {
-				byte[] d = ((String)obj).getBytes("UTF-8");
-				pk.packRaw(d.length);
-				pk.packRawBody(d);
-			} catch (UnsupportedEncodingException e) {
-				throw MessageTypeException.invalidConvert(obj, this);
-			}
-
-		} else if(obj == null) {
-			pk.packNil();
-
-		} else {
-			throw MessageTypeException.invalidConvert(obj, this);
-		}
-	}
-
-	@Override
-	public Object convert(Object obj) throws MessageTypeException {
-		// FIXME instanceof GenericObject
-		if(obj instanceof byte[]) {
-			// FIXME copy?
-			//byte[] d = (byte[])obj;
-			//byte[] v = new byte[d.length];
-			//System.arraycopy(d, 0, v, 0, d.length);
-			//return v;
-			return obj;
-
-		} else if(obj instanceof ByteBuffer) {
-			ByteBuffer d = (ByteBuffer)obj;
-			byte[] v = new byte[d.capacity()];
-			int pos = d.position();
-			d.get(v);
-			d.position(pos);
-			return v;
-
-		} else if(obj instanceof String) {
-			try {
-				return ((String)obj).getBytes("UTF-8");
-			} catch (UnsupportedEncodingException e) {
-				throw MessageTypeException.invalidConvert(obj, this);
-			}
-
-		} else {
-			throw MessageTypeException.invalidConvert(obj, this);
-		}
-	}
-
-	@Override
-	public Object createFromRaw(byte[] b, int offset, int length) {
-		byte[] d = new byte[length];
-		System.arraycopy(b, offset, d, 0, length);
-		return d;
-	}
-}
-
diff --git a/java/src/main/java/org/msgpack/schema/ReflectionClassSchema.java b/java/src/main/java/org/msgpack/schema/ReflectionClassSchema.java
deleted file mode 100644
index fb94adf..0000000
--- a/java/src/main/java/org/msgpack/schema/ReflectionClassSchema.java
+++ /dev/null
@@ -1,64 +0,0 @@
-package org.msgpack.schema;
-
-import java.util.Arrays;
-import java.util.List;
-import java.lang.reflect.*;
-import org.msgpack.*;
-
-// FIXME
-public abstract class ReflectionClassSchema extends ClassSchema {
-	private Constructor constructorCache;
-
-	public ReflectionClassSchema(String name, List<FieldSchema> fields, String namespace, List<String> imports) {
-		super(name, namespace, imports, fields);
-	}
-
-	/*
-	Schema getElementSchema(int index)
-	{
-		// FIXME check index < fields.length
-		fields[index].getSchema();
-	}
-
-	Object createFromArray(Object[] obj)
-	{
-		Object o = newInstance();
-		((MessageConvertable)o).messageConvert(obj);
-		return o;
-	}
-
-	Object newInstance()
-	{
-		if(constructorCache == null) {
-			cacheConstructor();
-		}
-		try {
-			return constructorCache.newInstance((Object[])null);
-		} catch (InvocationTargetException e) {
-			throw new RuntimeException("can't instantiate "+fqdn+": "+e.getMessage());
-		} catch (InstantiationException e) {
-			throw new RuntimeException("can't instantiate "+fqdn+": "+e.getMessage());
-		} catch (IllegalAccessException e) {
-			throw new RuntimeException("can't instantiate "+fqdn+": "+e.getMessage());
-		}
-	}
-
-	private void cacheConstructor()
-	{
-		try {
-			Class c = Class.forName(fqdn);
-			int index = 0;
-			for(SpecificFieldSchema f : fields) {
-				f.cacheField(c, index++);
-			}
-			constructorCache = c.getDeclaredConstructor((Class[])null);
-			constructorCache.setAccessible(true);
-		} catch(ClassNotFoundException e) {
-			throw new RuntimeException("class not found: "+fqdn);
-		} catch (NoSuchMethodException e) {
-			throw new RuntimeException("class not found: "+fqdn+": "+e.getMessage());
-		}
-	}
-	*/
-}
-
diff --git a/java/src/main/java/org/msgpack/schema/SSchemaParser.java b/java/src/main/java/org/msgpack/schema/SSchemaParser.java
deleted file mode 100644
index 4ae8a4b..0000000
--- a/java/src/main/java/org/msgpack/schema/SSchemaParser.java
+++ /dev/null
@@ -1,254 +0,0 @@
-//
-// MessagePack for Java
-//
-// Copyright (C) 2009-2010 FURUHASHI Sadayuki
-//
-//    Licensed under the Apache License, Version 2.0 (the "License");
-//    you may not use this file except in compliance with the License.
-//    You may obtain a copy of the License at
-//
-//        http://www.apache.org/licenses/LICENSE-2.0
-//
-//    Unless required by applicable law or agreed to in writing, software
-//    distributed under the License is distributed on an "AS IS" BASIS,
-//    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-//    See the License for the specific language governing permissions and
-//    limitations under the License.
-//
-package org.msgpack.schema;
-
-import java.util.ArrayList;
-import java.util.Iterator;
-import java.util.List;
-import java.util.Stack;
-import java.util.regex.Pattern;
-import java.util.regex.Matcher;
-import org.msgpack.*;
-
-// FIXME exception class
-
-public class SSchemaParser {
-	public static Schema parse(String source) {
-		return new SSchemaParser(false).run(source);
-	}
-
-	public static Schema load(String source) {
-		return new SSchemaParser(true).run(source);
-	}
-
-	private static abstract class SExp {
-		boolean isAtom() { return false; }
-		public String getAtom() { return null; }
-
-		boolean isTuple() { return false; }
-		public SExp getTuple(int i) { return null; }
-		public int size() { return 0; }
-		public boolean empty() { return size() == 0; }
-		Iterator<SExp> iterator(int offset) { return null; }
-	}
-
-	private static class SAtom extends SExp {
-		private String atom;
-
-		SAtom(String atom) { this.atom = atom; }
-
-		boolean isAtom() { return true; }
-		public String getAtom() { return atom; }
-
-		public String toString() { return atom; }
-	}
-
-	private static class STuple extends SExp {
-		private List<SExp> tuple;
-
-		STuple() { this.tuple = new ArrayList<SExp>(); }
-
-		public void add(SExp e) { tuple.add(e); }
-
-		boolean isTuple() { return true; }
-		public SExp getTuple(int i) { return tuple.get(i); }
-		public int size() { return tuple.size(); }
-
-		Iterator<SExp> iterator(int skip) {
-			Iterator<SExp> i = tuple.iterator();
-			for(int s=0; s < skip; ++s) { i.next(); }
-			return i;
-		}
-
-		public String toString() {
-			if(tuple.isEmpty()) { return "()"; }
-			Iterator<SExp> i = tuple.iterator();
-			StringBuffer o = new StringBuffer();
-			o.append("(").append(i.next());
-			while(i.hasNext()) { o.append(" ").append(i.next()); }
-			o.append(")");
-			return o.toString();
-		}
-	}
-
-	boolean specificClass;
-
-	private SSchemaParser(boolean specificClass) {
-		this.specificClass = specificClass;
-	}
-
-	private static Pattern pattern = Pattern.compile(
-			"(?:\\s+)|([\\(\\)]|[\\d\\w\\.]+)");
-
-	private Schema run(String source) {
-		Matcher m = pattern.matcher(source);
-
-		Stack<STuple> stack = new Stack<STuple>();
-		String token;
-
-		while(true) {
-			while(true) {
-				if(!m.find()) { throw new RuntimeException("unexpected end of file"); }
-				token = m.group(1);
-				if(token != null) { break; }
-			}
-
-			if(token.equals("(")) {
-				stack.push(new STuple());
-			} else if(token.equals(")")) {
-				STuple top = stack.pop();
-				if(stack.empty()) {
-					stack.push(top);
-					break;
-				}
-				stack.peek().add(top);
-			} else {
-				if(stack.empty()) {
-					throw new RuntimeException("unexpected token '"+token+"'");
-				}
-				stack.peek().add(new SAtom(token));
-			}
-		}
-
-		while(true) {
-			if(!m.find()) { break; }
-			token = m.group(1);
-			if(token != null) { throw new RuntimeException("unexpected token '"+token+"'"); }
-		}
-
-		return readType( stack.pop() );
-	}
-
-	private Schema readType(SExp exp) {
-		if(exp.isAtom()) {
-			String type = exp.getAtom();
-			if(type.equals("string")) {
-				return new StringSchema();
-			} else if(type.equals("raw")) {
-				return new RawSchema();
-			} else if(type.equals("byte")) {
-				return new ByteSchema();
-			} else if(type.equals("short")) {
-				return new ShortSchema();
-			} else if(type.equals("int")) {
-				return new IntSchema();
-			} else if(type.equals("long")) {
-				return new LongSchema();
-			} else if(type.equals("float")) {
-				return new FloatSchema();
-			} else if(type.equals("double")) {
-				return new DoubleSchema();
-			} else if(type.equals("object")) {
-				return new GenericSchema();
-			} else {
-				throw new RuntimeException("byte, short, int, long, float, double, raw, string or object is expected but got '"+type+"': "+exp);
-			}
-		} else {
-			String type = exp.getTuple(0).getAtom();
-			if(type.equals("class")) {
-				return parseClass(exp);
-			} else if(type.equals("array")) {
-				return parseArray(exp);
-			} else if(type.equals("map")) {
-				return parseMap(exp);
-			} else {
-				throw new RuntimeException("class, array or map is expected but got '"+type+"': "+exp);
-			}
-		}
-	}
-
-	private ClassSchema parseClass(SExp exp) {
-		if(exp.size() < 3 || !exp.getTuple(1).isAtom()) {
-			throw new RuntimeException("class is (class NAME CLASS_BODY): "+exp);
-		}
-
-		String namespace = null;
-		List<String> imports = new ArrayList<String>();
-		String name = exp.getTuple(1).getAtom();
-		List<FieldSchema> fields = new ArrayList<FieldSchema>();
-
-		for(Iterator<SExp> i=exp.iterator(2); i.hasNext();) {
-			SExp subexp = i.next();
-			if(!subexp.isTuple() || subexp.empty() || !subexp.getTuple(0).isAtom()) {
-				throw new RuntimeException("field, package or import is expected: "+subexp);
-			}
-			String type = subexp.getTuple(0).getAtom();
-			if(type.equals("field")) {
-				fields.add( parseField(subexp) );
-			} else if(type.equals("package")) {
-				if(namespace != null) {
-					throw new RuntimeException("duplicated package definition: "+subexp);
-				}
-				namespace = parseNamespace(subexp);
-			} else if(type.equals("import")) {
-				imports.add( parseImport(subexp) );
-			} else {
-				throw new RuntimeException("field, package or import is expected but got '"+type+"': "+subexp);
-			}
-		}
-
-		if(specificClass) {
-			return new SpecificClassSchema(name, namespace, imports, fields);
-		} else {
-			return new GenericClassSchema(name, namespace, imports, fields);
-		}
-	}
-
-	private ArraySchema parseArray(SExp exp) {
-		if(exp.size() != 2) {
-			throw new RuntimeException("array is (array ELEMENT_TYPE): "+exp);
-		}
-		Schema elementType = readType(exp.getTuple(1));
-		return new ArraySchema(elementType);
-	}
-
-	private MapSchema parseMap(SExp exp) {
-		if(exp.size() != 3 || !exp.getTuple(1).isAtom()) {
-			throw new RuntimeException("map is (map KEY_TYPE VALUE_TYPE): "+exp);
-		}
-		Schema keyType   = readType(exp.getTuple(1));
-		Schema valueType = readType(exp.getTuple(2));
-		return new MapSchema(keyType, valueType);
-	}
-
-	private String parseNamespace(SExp exp) {
-		if(exp.size() != 2 || !exp.getTuple(1).isAtom()) {
-			throw new RuntimeException("package is (package NAME): "+exp);
-		}
-		String name = exp.getTuple(1).getAtom();
-		return name;
-	}
-
-	private String parseImport(SExp exp) {
-		if(exp.size() != 2 || !exp.getTuple(1).isAtom()) {
-			throw new RuntimeException("import is (import NAME): "+exp);
-		}
-		String name = exp.getTuple(1).getAtom();
-		return name;
-	}
-
-	private FieldSchema parseField(SExp exp) {
-		if(exp.size() != 3 || !exp.getTuple(1).isAtom()) {
-			throw new RuntimeException("field is (field NAME TYPE): "+exp);
-		}
-		String name = exp.getTuple(1).getAtom();
-		Schema type = readType(exp.getTuple(2));
-		return new FieldSchema(name, type);
-	}
-}
-
diff --git a/java/src/main/java/org/msgpack/schema/ShortSchema.java b/java/src/main/java/org/msgpack/schema/ShortSchema.java
deleted file mode 100644
index f32ab41..0000000
--- a/java/src/main/java/org/msgpack/schema/ShortSchema.java
+++ /dev/null
@@ -1,89 +0,0 @@
-//
-// MessagePack for Java
-//
-// Copyright (C) 2009-2010 FURUHASHI Sadayuki
-//
-//    Licensed under the Apache License, Version 2.0 (the "License");
-//    you may not use this file except in compliance with the License.
-//    You may obtain a copy of the License at
-//
-//        http://www.apache.org/licenses/LICENSE-2.0
-//
-//    Unless required by applicable law or agreed to in writing, software
-//    distributed under the License is distributed on an "AS IS" BASIS,
-//    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-//    See the License for the specific language governing permissions and
-//    limitations under the License.
-//
-package org.msgpack.schema;
-
-import java.io.IOException;
-import org.msgpack.*;
-
-public class ShortSchema extends Schema {
-	public ShortSchema() {
-		super("Short");
-	}
-
-	@Override
-	public String getExpression() {
-		return "short";
-	}
-
-	@Override
-	public void pack(Packer pk, Object obj) throws IOException {
-		if(obj instanceof Number) {
-			pk.packShort( ((Number)obj).shortValue() );
-
-		} else if(obj == null) {
-			pk.packNil();
-
-		} else {
-			throw MessageTypeException.invalidConvert(obj, this);
-		}
-	}
-
-	@Override
-	public Object convert(Object obj) throws MessageTypeException {
-		if(obj instanceof Short) {
-			return obj;
-
-		} else if(obj instanceof Number) {
-			return ((Number)obj).shortValue();
-
-		} else {
-			throw MessageTypeException.invalidConvert(obj, this);
-		}
-	}
-
-	@Override
-	public Object createFromByte(byte v) {
-		return (short)v;
-	}
-
-	@Override
-	public Object createFromShort(short v) {
-		return (short)v;
-	}
-
-	@Override
-	public Object createFromInt(int v) {
-		return (short)v;
-	}
-
-	@Override
-	public Object createFromLong(long v) {
-		return (short)v;
-	}
-
-	@Override
-	public Object createFromFloat(float v) {
-		return (short)v;
-	}
-
-	@Override
-	public Object createFromDouble(double v) {
-		return (short)v;
-	}
-}
-
diff --git a/java/src/main/java/org/msgpack/schema/SpecificClassSchema.java b/java/src/main/java/org/msgpack/schema/SpecificClassSchema.java
deleted file mode 100644
index 30bd9e1..0000000
--- a/java/src/main/java/org/msgpack/schema/SpecificClassSchema.java
+++ /dev/null
@@ -1,122 +0,0 @@
-//
-// MessagePack for Java
-//
-// Copyright (C) 2009-2010 FURUHASHI Sadayuki
-//
-//    Licensed under the Apache License, Version 2.0 (the "License");
-//    you may not use this file except in compliance with the License.
-//    You may obtain a copy of the License at
-//
-//        http://www.apache.org/licenses/LICENSE-2.0
-//
-//    Unless required by applicable law or agreed to in writing, software
-//    distributed under the License is distributed on an "AS IS" BASIS,
-//    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-//    See the License for the specific language governing permissions and
-//    limitations under the License.
-//
-package org.msgpack.schema;
-
-import java.util.Collection;
-import java.util.List;
-import java.lang.reflect.*;
-import java.io.IOException;
-import org.msgpack.*;
-
-public class SpecificClassSchema extends ClassSchema {
-	private Class classCache;
-	private Method factoryCache;
-	private Constructor constructorCache;
-
-	public SpecificClassSchema(
-			String name, String namespace,
-			List<String> imports, List<FieldSchema> fields) {
-		super(name, namespace, imports, fields);
-	}
-
-	@Override
-	@SuppressWarnings("unchecked")
-	public void pack(Packer pk, Object obj) throws IOException {
-		if(obj == null) {
-			pk.packNil();
-			return;
-		}
-		if(classCache == null) {
-			cacheFactory();
-		}
-		if(classCache.isInstance(obj)) {
-			((MessagePackable)obj).messagePack(pk);
-		} else {
-			// FIXME Map<String,Object>
-			throw MessageTypeException.invalidConvert(obj, this);
-		}
-	}
-
-	@Override
-	public Object convert(Object obj) throws MessageTypeException {
-		if(obj instanceof Collection) {
-			if(constructorCache == null) {
-				cacheConstructor();
-			}
-			try {
-				MessageMergeable o = (MessageMergeable)constructorCache.newInstance((Object[])null);
-				o.messageMerge(obj);
-				return o;
-			} catch (InvocationTargetException e) {
-				throw new RuntimeException("can't instantiate "+fqdn+": "+e.getMessage());
-			} catch (InstantiationException e) {
-				throw new RuntimeException("can't instantiate "+fqdn+": "+e.getMessage());
-			} catch (IllegalAccessException e) {
-				throw new RuntimeException("can't instantiate "+fqdn+": "+e.getMessage());
-			}
-
-		} else {
-			throw MessageTypeException.invalidConvert(obj, this);
-		}
-	}
-
-	public Schema getElementSchema(int index) {
-		// FIXME check index < fields.length
-		return fields[index].getSchema();
-	}
-
-	public Object createFromArray(Object[] obj) {
-		if(factoryCache == null) {
-			cacheFactory();
-		}
-		try {
-			return factoryCache.invoke(null, new Object[]{obj});
-		} catch (InvocationTargetException e) {
-			throw new RuntimeException("can't instantiate "+fqdn+": "+e.getCause());
-		} catch (IllegalAccessException e) {
-			throw new RuntimeException("can't instantiate "+fqdn+": "+e.getMessage());
-		}
-	}
-
-	@SuppressWarnings("unchecked")
-	private void cacheFactory() {
-		try {
-			classCache = Class.forName(fqdn);
-			factoryCache = classCache.getDeclaredMethod("createFromMessage", new Class[]{Object[].class});
-			factoryCache.setAccessible(true);
-		} catch(ClassNotFoundException e) {
-			throw new RuntimeException("class not found: "+fqdn);
-		} catch (NoSuchMethodException e) {
-			throw new RuntimeException("class not found: "+fqdn+": "+e.getMessage());
-		}
-	}
-
-	@SuppressWarnings("unchecked")
-	private void cacheConstructor() {
-		try {
-			classCache = Class.forName(fqdn);
-			constructorCache = classCache.getDeclaredConstructor((Class[])null);
-			constructorCache.setAccessible(true);
-		} catch(ClassNotFoundException e) {
-			throw new RuntimeException("class not found: "+fqdn);
-		} catch (NoSuchMethodException e) {
-			throw new RuntimeException("class not found: "+fqdn+": "+e.getMessage());
-		}
-	}
-}
-
diff --git a/java/src/main/java/org/msgpack/schema/StringSchema.java b/java/src/main/java/org/msgpack/schema/StringSchema.java
deleted file mode 100644
index 46d515b..0000000
--- a/java/src/main/java/org/msgpack/schema/StringSchema.java
+++ /dev/null
@@ -1,111 +0,0 @@
-//
-// MessagePack for Java
-//
-// Copyright (C) 2009-2010 FURUHASHI Sadayuki
-//
-//    Licensed under the Apache License, Version 2.0 (the "License");
-//    you may not use this file except in compliance with the License.
-//    You may obtain a copy of the License at
-//
-//        http://www.apache.org/licenses/LICENSE-2.0
-//
-//    Unless required by applicable law or agreed to in writing, software
-//    distributed under the License is distributed on an "AS IS" BASIS,
-//    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-//    See the License for the specific language governing permissions and
-//    limitations under the License.
-//
-package org.msgpack.schema;
-
-import java.nio.ByteBuffer;
-import java.io.IOException;
-import java.io.UnsupportedEncodingException;
-import org.msgpack.*;
-
-public class StringSchema extends Schema {
-	public StringSchema() {
-		super("string");
-	}
-
-	@Override
-	public String getFullName() {
-		return "String";
-	}
-
-	@Override
-	public void pack(Packer pk, Object obj) throws IOException {
-		// FIXME instanceof GenericObject
-		if(obj instanceof String) {
-			try {
-				byte[] d = ((String)obj).getBytes("UTF-8");
-				pk.packRaw(d.length);
-				pk.packRawBody(d);
-			} catch (UnsupportedEncodingException e) {
-				throw MessageTypeException.invalidConvert(obj, this);
-			}
-
-		} else if(obj instanceof byte[]) {
-			byte[] d = (byte[])obj;
-			pk.packRaw(d.length);
-			pk.packRawBody(d);
-
-		} else if(obj instanceof ByteBuffer) {
-			ByteBuffer d = (ByteBuffer)obj;
-			if(!d.hasArray()) {
-				throw MessageTypeException.invalidConvert(obj, this);
-			}
-			pk.packRaw(d.capacity());
-			pk.packRawBody(d.array(), d.position(), d.capacity());
-
-		} else if(obj == null) {
-			pk.packNil();
-
-		} else {
-			throw MessageTypeException.invalidConvert(obj, this);
-		}
-	}
-
-	@Override
-	public Object convert(Object obj) throws MessageTypeException {
-		// FIXME instanceof GenericObject
-		if(obj instanceof String) {
-			return obj;
-
-		} else if(obj instanceof byte[]) {
-			try {
-				return new String((byte[])obj, "UTF-8");
-			} catch (UnsupportedEncodingException e) {
-				throw MessageTypeException.invalidConvert(obj, this);
-			}
-
-		} else if(obj instanceof ByteBuffer) {
-			ByteBuffer d = (ByteBuffer)obj;
-			try {
-				if(d.hasArray()) {
-					return new String(d.array(), d.position(), d.capacity(), "UTF-8");
-				} else {
-					byte[] v = new byte[d.capacity()];
-					int pos = d.position();
-					d.get(v);
-					d.position(pos);
-					return new String(v, "UTF-8");
-				}
-			} catch (UnsupportedEncodingException e) {
-				throw MessageTypeException.invalidConvert(obj, this);
-			}
-
-		} else {
-			throw MessageTypeException.invalidConvert(obj, this);
-		}
-	}
-
-	@Override
-	public Object createFromRaw(byte[] b, int offset, int length) {
-		try {
-			return new String(b, offset, length, "UTF-8");
-		} catch (Exception e) {
-			throw new RuntimeException(e.getMessage());
-		}
-	}
-}
-
diff --git a/java/src/test/java/org/msgpack/Image.java b/java/src/test/java/org/msgpack/Image.java
new file mode 100644
index 0000000..3fcfe38
--- /dev/null
+++ b/java/src/test/java/org/msgpack/Image.java
@@ -0,0 +1,50 @@
+package org.msgpack;
+
+import org.msgpack.*;
+import java.io.*;
+import java.util.*;
+
+public class Image implements MessagePackable, MessageUnpackable {
+	public String uri = "";
+	public String title = "";
+	public int width = 0;
+	public int height = 0;
+	public int size = 0;
+
+	public void messagePack(Packer pk) throws IOException {
+		pk.packArray(5);
+		pk.pack(uri);
+		pk.pack(title);
+		pk.pack(width);
+		pk.pack(height);
+		pk.pack(size);
+	}
+
+	public void messageUnpack(Unpacker pac) throws IOException, MessageTypeException {
+		int length = pac.unpackArray();
+		if(length != 5) {
+			throw new MessageTypeException();
+		}
+		uri = pac.unpackString();
+		title = pac.unpackString();
+		width = pac.unpackInt();
+		height = pac.unpackInt();
+		size = pac.unpackInt();
+	}
+
+	public boolean equals(Image obj) {
+		return uri.equals(obj.uri) &&
+			title.equals(obj.title) &&
+			width == obj.width &&
+			height == obj.height &&
+			size == obj.size;
+	}
+
+	public boolean equals(Object obj) {
+		if(obj.getClass() != Image.class) {
+			return false;
+		}
+		return equals((Image)obj);
+	}
+}
+
diff --git a/java/src/test/java/org/msgpack/TestCases.java b/java/src/test/java/org/msgpack/TestCases.java
new file mode 100644
index 0000000..c368972
--- /dev/null
+++ b/java/src/test/java/org/msgpack/TestCases.java
@@ -0,0 +1,40 @@
+package org.msgpack;
+
+import java.io.*;
+import java.util.*;
+
+import org.junit.Test;
+import static org.junit.Assert.*;
+
+public class TestCases {
+	public void feedFile(Unpacker pac, String path) throws Exception {
+		FileInputStream input = new FileInputStream(path);
+		byte[] buffer = new byte[32*1024];
+		while(true) {
+			int count = input.read(buffer);
+			if(count < 0) {
+				break;
+			}
+			pac.feed(buffer, 0, count);
+		}
+	}
+
+	@Test
+	public void testCases() throws Exception {
+		Unpacker pac = new Unpacker();
+		Unpacker pac_compact = new Unpacker();
+
+		feedFile(pac, "src/test/resources/cases.mpac");
+		feedFile(pac_compact, "src/test/resources/cases_compact.mpac");
+
+		UnpackResult result = new UnpackResult();
+		while(pac.next(result)) {
+			UnpackResult result_compact = new UnpackResult();
+			assertTrue( pac_compact.next(result_compact) );
+			assertTrue( result.getData().equals(result_compact.getData()) );
+		}
+
+		assertFalse( pac_compact.next(result) );
+	}
+};
+
diff --git a/java/src/test/java/org/msgpack/TestDirectConversion.java b/java/src/test/java/org/msgpack/TestDirectConversion.java
new file mode 100644
index 0000000..1822ecb
--- /dev/null
+++ b/java/src/test/java/org/msgpack/TestDirectConversion.java
@@ -0,0 +1,279 @@
+package org.msgpack;
+
+import org.msgpack.*;
+import java.io.*;
+import java.util.*;
+import java.math.BigInteger;
+
+import org.junit.Test;
+import static org.junit.Assert.*;
+
+public class TestDirectConversion {
+	@Test
+	public void testInt() throws Exception {
+		testInt(0);
+		testInt(-1);
+		testInt(1);
+		testInt(Integer.MIN_VALUE);
+		testInt(Integer.MAX_VALUE);
+		Random rand = new Random();
+		for (int i = 0; i < 1000; i++)
+			testInt(rand.nextInt());
+	}
+	public void testInt(int val) throws Exception {
+		ByteArrayOutputStream out = new ByteArrayOutputStream();
+		new Packer(out).pack(val);
+		ByteArrayInputStream in = new ByteArrayInputStream(out.toByteArray());
+		Unpacker pac = new Unpacker(in);
+		assertEquals(val, pac.unpackInt());
+	}
+
+	@Test
+	public void testLong() throws Exception {
+		testLong(0);
+		testLong(-1);
+		testLong(1);
+		testLong(Integer.MIN_VALUE);
+		testLong(Integer.MAX_VALUE);
+		testLong(Long.MIN_VALUE);
+		testLong(Long.MAX_VALUE);
+		Random rand = new Random();
+		for (int i = 0; i < 1000; i++)
+			testLong(rand.nextLong());
+	}
+	public void testLong(long val) throws Exception {
+		ByteArrayOutputStream out = new ByteArrayOutputStream();
+		new Packer(out).pack(val);
+		ByteArrayInputStream in = new ByteArrayInputStream(out.toByteArray());
+		Unpacker pac = new Unpacker(in);
+		assertEquals(val, pac.unpackLong());
+	}
+
+	@Test
+	public void testBigInteger() throws Exception {
+		testBigInteger(BigInteger.valueOf(0));
+		testBigInteger(BigInteger.valueOf(-1));
+		testBigInteger(BigInteger.valueOf(1));
+		testBigInteger(BigInteger.valueOf(Integer.MIN_VALUE));
+		testBigInteger(BigInteger.valueOf(Integer.MAX_VALUE));
+		testBigInteger(BigInteger.valueOf(Long.MIN_VALUE));
+		testBigInteger(BigInteger.valueOf(Long.MAX_VALUE));
+		BigInteger max = BigInteger.valueOf(Long.MAX_VALUE).setBit(63);
+		testBigInteger(max);
+		Random rand = new Random();
+		for (int i = 0; i < 1000; i++)
+			testBigInteger( max.subtract(BigInteger.valueOf( Math.abs(rand.nextLong()) )) );
+	}
+	public void testBigInteger(BigInteger val) throws Exception {
+		ByteArrayOutputStream out = new ByteArrayOutputStream();
+		new Packer(out).pack(val);
+		ByteArrayInputStream in = new ByteArrayInputStream(out.toByteArray());
+		Unpacker pac = new Unpacker(in);
+		assertEquals(val, pac.unpackBigInteger());
+	}
+
+	@Test
+	public void testFloat() throws Exception {
+		testFloat((float)0.0);
+		testFloat((float)-0.0);
+		testFloat((float)1.0);
+		testFloat((float)-1.0);
+		testFloat((float)Float.MAX_VALUE);
+		testFloat((float)Float.MIN_VALUE);
+		testFloat((float)Float.NaN);
+		testFloat((float)Float.NEGATIVE_INFINITY);
+		testFloat((float)Float.POSITIVE_INFINITY);
+		Random rand = new Random();
+		for (int i = 0; i < 1000; i++)
+			testFloat(rand.nextFloat());
+	}
+	public void testFloat(float val) throws Exception {
+		ByteArrayOutputStream out = new ByteArrayOutputStream();
+		new Packer(out).pack(val);
+		ByteArrayInputStream in = new ByteArrayInputStream(out.toByteArray());
+		Unpacker pac = new Unpacker(in);
+		assertEquals(val, pac.unpackFloat(), 10e-10);
+	}
+
+	@Test
+	public void testDouble() throws Exception {
+		testDouble((double)0.0);
+		testDouble((double)-0.0);
+		testDouble((double)1.0);
+		testDouble((double)-1.0);
+		testDouble((double)Double.MAX_VALUE);
+		testDouble((double)Double.MIN_VALUE);
+		testDouble((double)Double.NaN);
+		testDouble((double)Double.NEGATIVE_INFINITY);
+		testDouble((double)Double.POSITIVE_INFINITY);
+		Random rand = new Random();
+		for (int i = 0; i < 1000; i++)
+			testDouble(rand.nextDouble());
+	}
+	public void testDouble(double val) throws Exception {
+		ByteArrayOutputStream out = new ByteArrayOutputStream();
+		new Packer(out).pack(val);
+		ByteArrayInputStream in = new ByteArrayInputStream(out.toByteArray());
+		Unpacker pac = new Unpacker(in);
+		assertEquals(val, pac.unpackDouble(), 10e-10);
+	}
+
+	@Test
+	public void testNil() throws Exception {
+		ByteArrayOutputStream out = new ByteArrayOutputStream();
+		new Packer(out).packNil();
+		ByteArrayInputStream in = new ByteArrayInputStream(out.toByteArray());
+		Unpacker pac = new Unpacker(in);
+		assertEquals(null, pac.unpackNull());
+	}
+
+	@Test
+	public void testBoolean() throws Exception {
+		testBoolean(false);
+		testBoolean(true);
+	}
+	public void testBoolean(boolean val) throws Exception {
+		ByteArrayOutputStream out = new ByteArrayOutputStream();
+		new Packer(out).pack(val);
+		ByteArrayInputStream in = new ByteArrayInputStream(out.toByteArray());
+		Unpacker pac = new Unpacker(in);
+		assertEquals(val, pac.unpackBoolean());
+	}
+
+	@Test
+	public void testString() throws Exception {
+		testString("");
+		testString("a");
+		testString("ab");
+		testString("abc");
+
+		// small size string
+		for (int i = 0; i < 100; i++) {
+			StringBuilder sb = new StringBuilder();
+			int len = (int)Math.random() % 31 + 1;
+			for (int j = 0; j < len; j++)
+				sb.append('a' + ((int)Math.random()) & 26);
+			testString(sb.toString());
+		}
+
+		// medium size string
+		for (int i = 0; i < 100; i++) {
+			StringBuilder sb = new StringBuilder();
+			int len = (int)Math.random() % 100 + (1 << 15);
+			for (int j = 0; j < len; j++)
+				sb.append('a' + ((int)Math.random()) & 26);
+			testString(sb.toString());
+		}
+
+		// large size string
+		for (int i = 0; i < 10; i++) {
+			StringBuilder sb = new StringBuilder();
+			int len = (int)Math.random() % 100 + (1 << 31);
+			for (int j = 0; j < len; j++)
+				sb.append('a' + ((int)Math.random()) & 26);
+			testString(sb.toString());
+		}
+	}
+	public void testString(String val) throws Exception {
+		ByteArrayOutputStream out = new ByteArrayOutputStream();
+		new Packer(out).pack(val);
+		ByteArrayInputStream in = new ByteArrayInputStream(out.toByteArray());
+		Unpacker pac = new Unpacker(in);
+		assertEquals(val, pac.unpackString());
+	}
+
+	@Test
+	public void testArray() throws Exception {
+		List<Integer> emptyList = new ArrayList<Integer>();
+		{
+			ByteArrayOutputStream out = new ByteArrayOutputStream();
+			new Packer(out).pack(emptyList);
+			ByteArrayInputStream in = new ByteArrayInputStream(out.toByteArray());
+			Unpacker pac = new Unpacker(in);
+			int ulen = pac.unpackArray();
+			assertEquals(0, ulen);
+		}
+
+		for (int i = 0; i < 1000; i++) {
+			List<Integer> l = new ArrayList<Integer>();
+			int len = (int)Math.random() % 1000 + 1;
+			for (int j = 0; j < len; j++)
+				l.add(j);
+			ByteArrayOutputStream out = new ByteArrayOutputStream();
+			new Packer(out).pack(l);
+			ByteArrayInputStream in = new ByteArrayInputStream(out.toByteArray());
+			Unpacker pac = new Unpacker(in);
+			int ulen = pac.unpackArray();
+			assertEquals(len, ulen);
+			for (int j = 0; j < len; j++) {
+				assertEquals(l.get(j).intValue(), pac.unpackInt());
+			}
+		}
+
+		for (int i = 0; i < 1000; i++) {
+			List<String> l = new ArrayList<String>();
+			int len = (int)Math.random() % 1000 + 1;
+			for (int j = 0; j < len; j++)
+				l.add(Integer.toString(j));
+			ByteArrayOutputStream out = new ByteArrayOutputStream();
+			new Packer(out).pack(l);
+			ByteArrayInputStream in = new ByteArrayInputStream(out.toByteArray());
+			Unpacker pac = new Unpacker(in);
+			int ulen = pac.unpackArray();
+			assertEquals(len, ulen);
+			for (int j = 0; j < len; j++) {
+				assertEquals(l.get(j), pac.unpackString());
+			}
+		}
+	}
+
+	@Test
+	public void testMap() throws Exception {
+		Map<Integer, Integer> emptyMap = new HashMap<Integer, Integer>();
+		{
+			ByteArrayOutputStream out = new ByteArrayOutputStream();
+			new Packer(out).pack(emptyMap);
+			ByteArrayInputStream in = new ByteArrayInputStream(out.toByteArray());
+			Unpacker pac = new Unpacker(in);
+			int ulen = pac.unpackMap();
+			assertEquals(0, ulen);
+		}
+
+		for (int i = 0; i < 1000; i++) {
+			Map<Integer, Integer> m = new HashMap<Integer, Integer>();
+			int len = (int)Math.random() % 1000 + 1;
+			for (int j = 0; j < len; j++)
+				m.put(j, j);
+			ByteArrayOutputStream out = new ByteArrayOutputStream();
+			new Packer(out).pack(m);
+			ByteArrayInputStream in = new ByteArrayInputStream(out.toByteArray());
+			Unpacker pac = new Unpacker(in);
+			int ulen = pac.unpackMap();
+			assertEquals(len, ulen);
+			for (int j = 0; j < len; j++) {
+				Integer val = m.get(pac.unpackInt());
+				assertNotNull(val);
+				assertEquals(val.intValue(), pac.unpackInt());
+			}
+		}
+
+		for (int i = 0; i < 1000; i++) {
+			Map<String, Integer> m = new HashMap<String, Integer>();
+			int len = (int)Math.random() % 1000 + 1;
+			for (int j = 0; j < len; j++)
+				m.put(Integer.toString(j), j);
+			ByteArrayOutputStream out = new ByteArrayOutputStream();
+			new Packer(out).pack(m);
+			ByteArrayInputStream in = new ByteArrayInputStream(out.toByteArray());
+			Unpacker pac = new Unpacker(in);
+			int ulen = pac.unpackMap();
+			assertEquals(len, ulen);
+			for (int j = 0; j < len; j++) {
+				Integer val = m.get(pac.unpackString());
+				assertNotNull(val);
+				assertEquals(val.intValue(), pac.unpackInt());
+			}
+		}
+	}
+};
+
diff --git a/java/src/test/java/org/msgpack/TestMessageUnpackable.java b/java/src/test/java/org/msgpack/TestMessageUnpackable.java
new file mode 100644
index 0000000..32917c7
--- /dev/null
+++ b/java/src/test/java/org/msgpack/TestMessageUnpackable.java
@@ -0,0 +1,32 @@
+package org.msgpack;
+
+import org.msgpack.*;
+import java.io.*;
+import java.util.*;
+import java.math.BigInteger;
+
+import org.junit.Test;
+import static org.junit.Assert.*;
+
+public class TestMessageUnpackable {
+	@Test
+	public void testImage() throws Exception {
+		Image src = new Image();
+		src.title = "msgpack";
+		src.uri = "http://msgpack.org/";
+		src.width = 2560;
+		src.height = 1600;
+		src.size = 4096000;
+
+		ByteArrayOutputStream out = new ByteArrayOutputStream();
+		src.messagePack(new Packer(out));
+
+		Image dst = new Image();
+
+		ByteArrayInputStream in = new ByteArrayInputStream(out.toByteArray());
+		dst.messageUnpack(new Unpacker(in));
+
+		assertEquals(src, dst);
+	}
+}
+
diff --git a/java/src/test/java/org/msgpack/TestObjectEquals.java b/java/src/test/java/org/msgpack/TestObjectEquals.java
new file mode 100644
index 0000000..25fe927
--- /dev/null
+++ b/java/src/test/java/org/msgpack/TestObjectEquals.java
@@ -0,0 +1,96 @@
+package org.msgpack;
+
+import org.msgpack.*;
+import org.msgpack.object.*;
+import java.math.BigInteger;
+import java.util.*;
+
+import org.junit.Test;
+import static org.junit.Assert.*;
+
+public class TestObjectEquals {
+	@Test
+	public void testInt() throws Exception {
+		testInt(0);
+		testInt(-1);
+		testInt(1);
+		testInt(Integer.MIN_VALUE);
+		testInt(Integer.MAX_VALUE);
+		Random rand = new Random();
+		for (int i = 0; i < 1000; i++)
+			testInt(rand.nextInt());
+	}
+	public void testInt(int val) throws Exception {
+		MessagePackObject objInt = IntegerType.create(val);
+		MessagePackObject objLong = IntegerType.create((long)val);
+		MessagePackObject objBigInt = IntegerType.create(BigInteger.valueOf((long)val));
+		assertTrue(objInt.equals(objInt));
+		assertTrue(objInt.equals(objLong));
+		assertTrue(objInt.equals(objBigInt));
+		assertTrue(objLong.equals(objInt));
+		assertTrue(objLong.equals(objLong));
+		assertTrue(objLong.equals(objBigInt));
+		assertTrue(objBigInt.equals(objInt));
+		assertTrue(objBigInt.equals(objLong));
+		assertTrue(objBigInt.equals(objBigInt));
+	}
+
+	@Test
+	public void testLong() throws Exception {
+		testLong(0);
+		testLong(-1);
+		testLong(1);
+		testLong(Integer.MIN_VALUE);
+		testLong(Integer.MAX_VALUE);
+		testLong(Long.MIN_VALUE);
+		testLong(Long.MAX_VALUE);
+		Random rand = new Random();
+		for (int i = 0; i < 1000; i++)
+			testLong(rand.nextLong());
+	}
+	public void testLong(long val) throws Exception {
+		MessagePackObject objInt = IntegerType.create((int)val);
+		MessagePackObject objLong = IntegerType.create(val);
+		MessagePackObject objBigInt = IntegerType.create(BigInteger.valueOf(val));
+		if(val > (long)Integer.MAX_VALUE || val < (long)Integer.MIN_VALUE) {
+			assertTrue(objInt.equals(objInt));
+			assertFalse(objInt.equals(objLong));
+			assertFalse(objInt.equals(objBigInt));
+			assertFalse(objLong.equals(objInt));
+			assertTrue(objLong.equals(objLong));
+			assertTrue(objLong.equals(objBigInt));
+			assertFalse(objBigInt.equals(objInt));
+			assertTrue(objBigInt.equals(objLong));
+			assertTrue(objBigInt.equals(objBigInt));
+		} else {
+			assertTrue(objInt.equals(objInt));
+			assertTrue(objInt.equals(objLong));
+			assertTrue(objInt.equals(objBigInt));
+			assertTrue(objLong.equals(objInt));
+			assertTrue(objLong.equals(objLong));
+			assertTrue(objLong.equals(objBigInt));
+			assertTrue(objBigInt.equals(objInt));
+			assertTrue(objBigInt.equals(objLong));
+			assertTrue(objBigInt.equals(objBigInt));
+		}
+	}
+
+	@Test
+	public void testNil() throws Exception {
+		assertTrue(NilType.create().equals(NilType.create()));
+		assertFalse(NilType.create().equals(IntegerType.create(0)));
+		assertFalse(NilType.create().equals(BooleanType.create(false)));
+	}
+
+	@Test
+	public void testString() throws Exception {
+		testString("");
+		testString("a");
+		testString("ab");
+		testString("abc");
+	}
+	public void testString(String str) throws Exception {
+		assertTrue(RawType.create(str).equals(RawType.create(str)));
+	}
+}
+
diff --git a/java/src/test/java/org/msgpack/TestPackUnpack.java b/java/src/test/java/org/msgpack/TestPackUnpack.java
index 6877853..494c8a8 100644
--- a/java/src/test/java/org/msgpack/TestPackUnpack.java
+++ b/java/src/test/java/org/msgpack/TestPackUnpack.java
@@ -3,239 +3,273 @@ package org.msgpack;
 import org.msgpack.*;
 import java.io.*;
 import java.util.*;
+import java.math.BigInteger;
 
 import org.junit.Test;
 import static org.junit.Assert.*;
 
 public class TestPackUnpack {
-    protected Object unpackOne(ByteArrayOutputStream out) {
-        return unpackOne(out, null);
-    }
-    protected Object unpackOne(ByteArrayOutputStream out, Schema schema) {
-        ByteArrayInputStream in = new ByteArrayInputStream(out.toByteArray());
-        Unpacker upk = new Unpacker(in);
-        if (schema != null)
-            upk = upk.useSchema(schema);
-        Iterator<Object> it = upk.iterator();
-        assertEquals(true, it.hasNext());
-        Object obj = it.next();
-        assertEquals(false, it.hasNext());
-        return obj;
-    }
-
-    @Test
-    public void testInt() throws Exception {
-        testInt(0);
-        testInt(-1);
-        testInt(1);
-        testInt(Integer.MIN_VALUE);
-        testInt(Integer.MAX_VALUE);
-        Random rand = new Random();
-        for (int i = 0; i < 1000; i++)
-            testInt(rand.nextInt());
-    }
-    public void testInt(int val) throws Exception {
-        ByteArrayOutputStream out = new ByteArrayOutputStream();
-        new Packer(out).pack(val);
-        Object obj = unpackOne(out);
-        if (obj instanceof Byte)
-            assertEquals(val, ((Byte)obj).intValue());
-        else if (obj instanceof Integer)
-            assertEquals(val, ((Integer)obj).intValue());
-        else if (obj instanceof Short)
-            assertEquals(val, ((Short)obj).intValue());
-        else if (obj instanceof Long)
-            assertEquals(val, ((Long)obj).intValue());
-        else {
-            System.out.println("Got unexpected class: " + obj.getClass());
-            assertTrue(false);
-        }
-    }
-
-    @Test
-    public void testFloat() throws Exception {
-        testFloat((float)0.0);
-        testFloat((float)-0.0);
-        testFloat((float)1.0);
-        testFloat((float)-1.0);
-        testFloat((float)Float.MAX_VALUE);
-        testFloat((float)Float.MIN_VALUE);
-        testFloat((float)Float.NaN);
-        testFloat((float)Float.NEGATIVE_INFINITY);
-        testFloat((float)Float.POSITIVE_INFINITY);
-        Random rand = new Random();
-        for (int i = 0; i < 1000; i++)
-            testFloat(rand.nextFloat());
-    }
-    public void testFloat(float val) throws Exception {
-        ByteArrayOutputStream out = new ByteArrayOutputStream();
-        new Packer(out).pack(val);
-        Object obj = unpackOne(out);
-        if (obj instanceof Float)
-            assertEquals(val, ((Float)obj).floatValue(), 10e-10);
-        else {
-            System.out.println("Got unexpected class: " + obj.getClass());
-            assertTrue(false);
-        }
-    }
-
-    @Test
-    public void testDouble() throws Exception {
-        testDouble((double)0.0);
-        testDouble((double)-0.0);
-        testDouble((double)1.0);
-        testDouble((double)-1.0);
-        testDouble((double)Double.MAX_VALUE);
-        testDouble((double)Double.MIN_VALUE);
-        testDouble((double)Double.NaN);
-        testDouble((double)Double.NEGATIVE_INFINITY);
-        testDouble((double)Double.POSITIVE_INFINITY);
-        Random rand = new Random();
-        for (int i = 0; i < 1000; i++)
-            testDouble(rand.nextDouble());
-    }
-    public void testDouble(double val) throws Exception {
-        ByteArrayOutputStream out = new ByteArrayOutputStream();
-        new Packer(out).pack(val);
-        Object obj = unpackOne(out);
-        if (obj instanceof Double)
-            assertEquals(val, ((Double)obj).doubleValue(), 10e-10);
-        else {
-            System.out.println("Got unexpected class: " + obj.getClass());
-            assertTrue(false);
-        }
-    }
-
-    @Test
-    public void testNil() throws Exception {
-        ByteArrayOutputStream out = new ByteArrayOutputStream();
-        new Packer(out).packNil();
-        Object obj = unpackOne(out);
-        assertEquals(null, obj);
-    }
-
-    @Test
-    public void testBoolean() throws Exception {
-        testBoolean(false);
-        testBoolean(true);
-    }
-    public void testBoolean(boolean val) throws Exception {
-        ByteArrayOutputStream out = new ByteArrayOutputStream();
-        new Packer(out).pack(val);
-        Object obj = unpackOne(out);
-        if (obj instanceof Boolean)
-            assertEquals(val, ((Boolean)obj).booleanValue());
-        else {
-            System.out.println("Got unexpected class: " + obj.getClass());
-            assertTrue(false);
-        }
-    }
-
-    @Test
-    public void testString() throws Exception {
-        testString("");
-        testString("a");
-        testString("ab");
-        testString("abc");
-        // small size string
-        for (int i = 0; i < 100; i++) {
-            StringBuilder sb = new StringBuilder();
-            int len = (int)Math.random() % 31 + 1;
-            for (int j = 0; j < len; j++)
-                sb.append('a' + ((int)Math.random()) & 26);
-            testString(sb.toString());
-        }
-        // medium size string
-        for (int i = 0; i < 100; i++) {
-            StringBuilder sb = new StringBuilder();
-            int len = (int)Math.random() % 100 + (1 << 15);
-            for (int j = 0; j < len; j++)
-                sb.append('a' + ((int)Math.random()) & 26);
-            testString(sb.toString());
-        }
-        // large size string
-        for (int i = 0; i < 10; i++) {
-            StringBuilder sb = new StringBuilder();
-            int len = (int)Math.random() % 100 + (1 << 31);
-            for (int j = 0; j < len; j++)
-                sb.append('a' + ((int)Math.random()) & 26);
-            testString(sb.toString());
-        }
-    }
-    public void testString(String val) throws Exception {
-        ByteArrayOutputStream out = new ByteArrayOutputStream();
-        new Packer(out).pack(val);
-        Object obj = unpackOne(out);
-        if (obj instanceof byte[])
-            assertEquals(val, new String((byte[])obj));
-        else {
-            System.out.println("obj=" + obj);
-            System.out.println("Got unexpected class: " + obj.getClass());
-            assertTrue(false);
-        }
-    }
-
-    @Test
-    public void testArray() throws Exception {
-        for (int i = 0; i < 1000; i++) {
-            Schema schema = Schema.parse("(array int)");
-            List<Integer> l = new ArrayList<Integer>();
-            int len = (int)Math.random() % 1000 + 1;
-            for (int j = 0; j < len; j++)
-                l.add(j);
-            testArray(l, schema);
-        }
-        for (int i = 0; i < 1000; i++) {
-            Schema schema = Schema.parse("(array string)");
-            List<String> l = new ArrayList<String>();
-            int len = (int)Math.random() % 1000 + 1;
-            for (int j = 0; j < len; j++)
-                l.add(Integer.toString(j));
-            testArray(l, schema);
-        }
-    }
-    public void testArray(List val, Schema schema) throws Exception {
-        ByteArrayOutputStream out = new ByteArrayOutputStream();
-        new Packer(out).pack(val);
-        Object obj = unpackOne(out, schema);
-        if (obj instanceof List)
-            assertTrue(val.equals(obj));
-        else {
-            System.out.println("obj=" + obj);
-            System.out.println("Got unexpected class: " + obj.getClass());
-            assertTrue(false);
-        }
-    }
-
-    @Test
-    public void testMap() throws Exception {
-        for (int i = 0; i < 1000; i++) {
-            Schema schema = Schema.parse("(map int int)");
-            Map<Integer, Integer> m = new HashMap<Integer, Integer>();
-            int len = (int)Math.random() % 1000 + 1;
-            for (int j = 0; j < len; j++)
-                m.put(j, j);
-            testMap(m, schema);
-        }
-        for (int i = 0; i < 1000; i++) {
-            Schema schema = Schema.parse("(map string int)");
-            Map<String, Integer> m = new HashMap<String, Integer>();
-            int len = (int)Math.random() % 1000 + 1;
-            for (int j = 0; j < len; j++)
-                m.put(Integer.toString(j), j);
-            testMap(m, schema);
-        }
-    }
-    public void testMap(Map val, Schema schema) throws Exception {
-        ByteArrayOutputStream out = new ByteArrayOutputStream();
-        new Packer(out).pack(val);
-        Object obj = unpackOne(out, schema);
-        if (obj instanceof Map)
-            assertTrue(val.equals(obj));
-        else {
-            System.out.println("obj=" + obj);
-            System.out.println("Got unexpected class: " + obj.getClass());
-            assertTrue(false);
-        }
-    }    
+	public MessagePackObject unpackOne(ByteArrayOutputStream out) {
+		ByteArrayInputStream in = new ByteArrayInputStream(out.toByteArray());
+		Unpacker pac = new Unpacker(in);
+		Iterator<MessagePackObject> it = pac.iterator();
+		assertEquals(true, it.hasNext());
+		MessagePackObject obj = it.next();
+		assertEquals(false, it.hasNext());
+		return obj;
+	}
+
+	@Test
+	public void testInt() throws Exception {
+		testInt(0);
+		testInt(-1);
+		testInt(1);
+		testInt(Integer.MIN_VALUE);
+		testInt(Integer.MAX_VALUE);
+		Random rand = new Random();
+		for (int i = 0; i < 1000; i++)
+			testInt(rand.nextInt());
+	}
+	public void testInt(int val) throws Exception {
+		ByteArrayOutputStream out = new ByteArrayOutputStream();
+		new Packer(out).pack(val);
+		MessagePackObject obj = unpackOne(out);
+		assertEquals(val, obj.asInt());
+	}
+
+	@Test
+	public void testLong() throws Exception {
+		testLong(0);
+		testLong(-1);
+		testLong(1);
+		testLong(Integer.MIN_VALUE);
+		testLong(Integer.MAX_VALUE);
+		testLong(Long.MIN_VALUE);
+		testLong(Long.MAX_VALUE);
+		Random rand = new Random();
+		for (int i = 0; i < 1000; i++)
+			testLong(rand.nextLong());
+	}
+	public void testLong(long val) throws Exception {
+		ByteArrayOutputStream out = new ByteArrayOutputStream();
+		new Packer(out).pack(val);
+		MessagePackObject obj = unpackOne(out);
+		assertEquals(val, obj.asLong());
+	}
+
+	@Test
+	public void testBigInteger() throws Exception {
+		testBigInteger(BigInteger.valueOf(0));
+		testBigInteger(BigInteger.valueOf(-1));
+		testBigInteger(BigInteger.valueOf(1));
+		testBigInteger(BigInteger.valueOf(Integer.MIN_VALUE));
+		testBigInteger(BigInteger.valueOf(Integer.MAX_VALUE));
+		testBigInteger(BigInteger.valueOf(Long.MIN_VALUE));
+		testBigInteger(BigInteger.valueOf(Long.MAX_VALUE));
+		BigInteger max = BigInteger.valueOf(Long.MAX_VALUE).setBit(63);
+		testBigInteger(max);
+		Random rand = new Random();
+		for (int i = 0; i < 1000; i++)
+			testBigInteger( max.subtract(BigInteger.valueOf( Math.abs(rand.nextLong()) )) );
+	}
+	public void testBigInteger(BigInteger val) throws Exception {
+		ByteArrayOutputStream out = new ByteArrayOutputStream();
+		new Packer(out).pack(val);
+		MessagePackObject obj = unpackOne(out);
+		assertEquals(val, obj.asBigInteger());
+	}
+
+	@Test
+	public void testFloat() throws Exception {
+		testFloat((float)0.0);
+		testFloat((float)-0.0);
+		testFloat((float)1.0);
+		testFloat((float)-1.0);
+		testFloat((float)Float.MAX_VALUE);
+		testFloat((float)Float.MIN_VALUE);
+		testFloat((float)Float.NaN);
+		testFloat((float)Float.NEGATIVE_INFINITY);
+		testFloat((float)Float.POSITIVE_INFINITY);
+		Random rand = new Random();
+		for (int i = 0; i < 1000; i++)
+			testFloat(rand.nextFloat());
+	}
+	public void testFloat(float val) throws Exception {
+		ByteArrayOutputStream out = new ByteArrayOutputStream();
+		new Packer(out).pack(val);
+		MessagePackObject obj = unpackOne(out);
+		float f = obj.asFloat();
+		assertEquals(val, f, 10e-10);
+	}
+
+	@Test
+	public void testDouble() throws Exception {
+		testDouble((double)0.0);
+		testDouble((double)-0.0);
+		testDouble((double)1.0);
+		testDouble((double)-1.0);
+		testDouble((double)Double.MAX_VALUE);
+		testDouble((double)Double.MIN_VALUE);
+		testDouble((double)Double.NaN);
+		testDouble((double)Double.NEGATIVE_INFINITY);
+		testDouble((double)Double.POSITIVE_INFINITY);
+		Random rand = new Random();
+		for (int i = 0; i < 1000; i++)
+			testDouble(rand.nextDouble());
+	}
+	public void testDouble(double val) throws Exception {
+		ByteArrayOutputStream out = new ByteArrayOutputStream();
+		new Packer(out).pack(val);
+		MessagePackObject obj = unpackOne(out);
+		double f = obj.asDouble();
+		assertEquals(val, f, 10e-10);
+	}
+
+	@Test
+	public void testNil() throws Exception {
+		ByteArrayOutputStream out = new ByteArrayOutputStream();
+		new Packer(out).packNil();
+		MessagePackObject obj = unpackOne(out);
+		assertTrue(obj.isNil());
+	}
+
+	@Test
+	public void testBoolean() throws Exception {
+		testBoolean(false);
+		testBoolean(true);
+	}
+	public void testBoolean(boolean val) throws Exception {
+		ByteArrayOutputStream out = new ByteArrayOutputStream();
+		new Packer(out).pack(val);
+		MessagePackObject obj = unpackOne(out);
+		assertEquals(val, obj.asBoolean());
+	}
+
+	@Test
+	public void testString() throws Exception {
+		testString("");
+		testString("a");
+		testString("ab");
+		testString("abc");
+
+		// small size string
+		for (int i = 0; i < 100; i++) {
+			StringBuilder sb = new StringBuilder();
+			int len = (int)Math.random() % 31 + 1;
+			for (int j = 0; j < len; j++)
+				sb.append('a' + ((int)Math.random()) & 26);
+			testString(sb.toString());
+		}
+
+		// medium size string
+		for (int i = 0; i < 100; i++) {
+			StringBuilder sb = new StringBuilder();
+			int len = (int)Math.random() % 100 + (1 << 15);
+			for (int j = 0; j < len; j++)
+				sb.append('a' + ((int)Math.random()) & 26);
+			testString(sb.toString());
+		}
+
+		// large size string
+		for (int i = 0; i < 10; i++) {
+			StringBuilder sb = new StringBuilder();
+			int len = (int)Math.random() % 100 + (1 << 31);
+			for (int j = 0; j < len; j++)
+				sb.append('a' + ((int)Math.random()) & 26);
+			testString(sb.toString());
+		}
+	}
+	public void testString(String val) throws Exception {
+		ByteArrayOutputStream out = new ByteArrayOutputStream();
+		new Packer(out).pack(val);
+		MessagePackObject obj = unpackOne(out);
+		assertEquals(val, obj.asString());
+	}
+
+	@Test
+	public void testArray() throws Exception {
+		List<Integer> emptyList = new ArrayList<Integer>();
+		{
+			ByteArrayOutputStream out = new ByteArrayOutputStream();
+			new Packer(out).pack(emptyList);
+			MessagePackObject obj = unpackOne(out);
+			assertEquals(emptyList, obj.asList());
+		}
+
+		for (int i = 0; i < 1000; i++) {
+			List<Integer> l = new ArrayList<Integer>();
+			int len = (int)Math.random() % 1000 + 1;
+			for (int j = 0; j < len; j++)
+				l.add(j);
+			ByteArrayOutputStream out = new ByteArrayOutputStream();
+			new Packer(out).pack(l);
+			MessagePackObject obj = unpackOne(out);
+			List<MessagePackObject> list = obj.asList();
+			assertEquals(l.size(), list.size());
+			for (int j = 0; j < len; j++) {
+				assertEquals(l.get(j).intValue(), list.get(j).asInt());
+			}
+		}
+
+		for (int i = 0; i < 1000; i++) {
+			List<String> l = new ArrayList<String>();
+			int len = (int)Math.random() % 1000 + 1;
+			for (int j = 0; j < len; j++)
+				l.add(Integer.toString(j));
+			ByteArrayOutputStream out = new ByteArrayOutputStream();
+			new Packer(out).pack(l);
+			MessagePackObject obj = unpackOne(out);
+			List<MessagePackObject> list = obj.asList();
+			assertEquals(l.size(), list.size());
+			for (int j = 0; j < len; j++) {
+				assertEquals(l.get(j), list.get(j).asString());
+			}
+		}
+	}
+
+	@Test
+	public void testMap() throws Exception {
+		Map<Integer, Integer> emptyMap = new HashMap<Integer, Integer>();
+		{
+			ByteArrayOutputStream out = new ByteArrayOutputStream();
+			new Packer(out).pack(emptyMap);
+			MessagePackObject obj = unpackOne(out);
+			assertEquals(emptyMap, obj.asMap());
+		}
+
+		for (int i = 0; i < 1000; i++) {
+			Map<Integer, Integer> m = new HashMap<Integer, Integer>();
+			int len = (int)Math.random() % 1000 + 1;
+			for (int j = 0; j < len; j++)
+				m.put(j, j);
+			ByteArrayOutputStream out = new ByteArrayOutputStream();
+			new Packer(out).pack(m);
+			MessagePackObject obj = unpackOne(out);
+			Map<MessagePackObject, MessagePackObject> map = obj.asMap();
+			assertEquals(m.size(), map.size());
+			for (Map.Entry<MessagePackObject, MessagePackObject> pair : map.entrySet()) {
+				Integer val = m.get(pair.getKey().asInt());
+				assertNotNull(val);
+				assertEquals(val.intValue(), pair.getValue().asInt());
+			}
+		}
+
+		for (int i = 0; i < 1000; i++) {
+			Map<String, Integer> m = new HashMap<String, Integer>();
+			int len = (int)Math.random() % 1000 + 1;
+			for (int j = 0; j < len; j++)
+				m.put(Integer.toString(j), j);
+			ByteArrayOutputStream out = new ByteArrayOutputStream();
+			new Packer(out).pack(m);
+			MessagePackObject obj = unpackOne(out);
+			Map<MessagePackObject, MessagePackObject> map = obj.asMap();
+			assertEquals(m.size(), map.size());
+			for (Map.Entry<MessagePackObject, MessagePackObject> pair : map.entrySet()) {
+				Integer val = m.get(pair.getKey().asString());
+				assertNotNull(val);
+				assertEquals(val.intValue(), pair.getValue().asInt());
+			}
+		}
+	}
 };
+
diff --git a/java/src/test/resources/cases.json b/java/src/test/resources/cases.json
new file mode 100644
index 0000000..fd390d4
--- /dev/null
+++ b/java/src/test/resources/cases.json
@@ -0,0 +1 @@
+[false,true,null,0,0,0,0,0,0,0,0,0,-1,-1,-1,-1,-1,127,127,255,65535,4294967295,-32,-32,-128,-32768,-2147483648,0.0,-0.0,1.0,-1.0,"a","a","a","","","",[0],[0],[0],[],[],[],{},{},{},{"a":97},{"a":97},{"a":97},[[]],[["a"]]]
\ No newline at end of file
diff --git a/java/src/test/resources/cases.mpac b/java/src/test/resources/cases.mpac
new file mode 100644
index 0000000..5ec08c6
--- /dev/null
+++ b/java/src/test/resources/cases.mpac
diff --git a/java/src/test/resources/cases_compact.mpac b/java/src/test/resources/cases_compact.mpac
new file mode 100644
index 0000000..8812442
--- /dev/null
+++ b/java/src/test/resources/cases_compact.mpac
diff --git a/java/test/README b/java/test/README
index 4e16454..9b98d91 100644
--- a/java/test/README
+++ b/java/test/README
@@ -1,7 +1,7 @@
 #!/bin/sh
 svn checkout -r114 http://thrift-protobuf-compare.googlecode.com/svn/trunk/ thrift-protobuf-compare-base
 cp -rf thrift-protobuf-compare/tpc thrift-protobuf-compare-base
-cp ../dist/msgpack.jar thrift-protobuf-compare-base/tpc/lib/
+cp ../target/msgpack*.jar thrift-protobuf-compare-base/tpc/lib/msgpack.jar
 cd thrift-protobuf-compare-base/tpc/
 ant compile
 ./run-benchmark.sh
diff --git a/java/test/thrift-protobuf-compare/tpc/src/serializers/BenchmarkRunner.java b/java/test/thrift-protobuf-compare/tpc/src/serializers/BenchmarkRunner.java
index b17dfb2..fa88b6b 100644
--- a/java/test/thrift-protobuf-compare/tpc/src/serializers/BenchmarkRunner.java
+++ b/java/test/thrift-protobuf-compare/tpc/src/serializers/BenchmarkRunner.java
@@ -11,6 +11,7 @@ import java.util.Map;
 import java.util.Set;
 import java.util.Map.Entry;
 
+import serializers.msgpack.MessagePackDirectSerializer;
 import serializers.msgpack.MessagePackSpecificSerializer;
 import serializers.msgpack.MessagePackIndirectSerializer;
 import serializers.msgpack.MessagePackDynamicSerializer;
@@ -39,6 +40,7 @@ public class BenchmarkRunner
     BenchmarkRunner runner = new BenchmarkRunner();
 
     // binary codecs first
+    runner.addObjectSerializer(new MessagePackDirectSerializer());
     runner.addObjectSerializer(new MessagePackSpecificSerializer());
     runner.addObjectSerializer(new MessagePackIndirectSerializer());
     runner.addObjectSerializer(new MessagePackDynamicSerializer());
diff --git a/java/test/thrift-protobuf-compare/tpc/src/serializers/msgpack/MediaContent.java b/java/test/thrift-protobuf-compare/tpc/src/serializers/msgpack/MediaContent.java
index 5dfbc8d..e750b5a 100644
--- a/java/test/thrift-protobuf-compare/tpc/src/serializers/msgpack/MediaContent.java
+++ b/java/test/thrift-protobuf-compare/tpc/src/serializers/msgpack/MediaContent.java
@@ -6,7 +6,7 @@ import org.msgpack.*;
 import org.msgpack.schema.ClassSchema;
 import org.msgpack.schema.FieldSchema;
 
-public final class MediaContent implements MessagePackable, MessageMergeable
+public final class MediaContent implements MessagePackable, MessageConvertable, MessageUnpackable
 {
 	private static final ClassSchema _SCHEMA = (ClassSchema)Schema.load("(class MediaContent (package serializers.msgpack) (field image (array (class Image (package serializers.msgpack) (field uri string) (field title string) (field width int) (field height int) (field size int)))) (field media (class Media (package serializers.msgpack) (field uri string) (field title string) (field width int) (field height int) (field format string) (field duration long) (field size long) (field bitrate int) (field person (array string)) (field player int) (field copyright string))))");
 	public static ClassSchema getSchema() { return _SCHEMA; }
@@ -27,7 +27,7 @@ public final class MediaContent implements MessagePackable, MessageMergeable
 
 	@Override
 	@SuppressWarnings("unchecked")
-	public void messageMerge(Object obj) throws MessageTypeException
+	public void messageConvert(Object obj) throws MessageTypeException
 	{
 		Object[] _source = ((List)obj).toArray();
 		FieldSchema[] _fields = _SCHEMA.getFields();
@@ -35,6 +35,23 @@ public final class MediaContent implements MessagePackable, MessageMergeable
 		if(_source.length <= 1) { return; } this.media = (Media)_fields[1].getSchema().convert(_source[1]);
 	}
 
+	@Override
+	public void messageUnpack(Unpacker _pac) throws IOException, MessageTypeException {
+		int _length = _pac.unpackArray();
+		if(_length <= 0) { return; }
+		int _image_length = _pac.unpackArray();
+		this.image = new ArrayList(_image_length);
+		for(int _i=0; _i < _image_length; ++_i) {
+			Image _image_i = new Image();
+			_image_i.messageUnpack(_pac);
+			this.image.add(_image_i);
+		}
+		if(_length <= 1) { return; }
+		this.media = new Media();
+		this.media.messageUnpack(_pac);
+		for(int _i=2; _i < _length; ++_i) { _pac.unpackObject(); }
+	}
+
 	@SuppressWarnings("unchecked")
 	public static MediaContent createFromMessage(Object[] _message)
 	{
@@ -45,7 +62,7 @@ public final class MediaContent implements MessagePackable, MessageMergeable
 	}
 }
 
-final class Image implements MessagePackable, MessageMergeable
+final class Image implements MessagePackable, MessageConvertable, MessageUnpackable
 {
 	private static final ClassSchema _SCHEMA = (ClassSchema)Schema.load("(class Image (package serializers.msgpack) (field uri string) (field title string) (field width int) (field height int) (field size int))");
 	public static ClassSchema getSchema() { return _SCHEMA; }
@@ -72,7 +89,7 @@ final class Image implements MessagePackable, MessageMergeable
 
 	@Override
 	@SuppressWarnings("unchecked")
-	public void messageMerge(Object obj) throws MessageTypeException
+	public void messageConvert(Object obj) throws MessageTypeException
 	{
 		Object[] _source = ((List)obj).toArray();
 		FieldSchema[] _fields = _SCHEMA.getFields();
@@ -83,6 +100,22 @@ final class Image implements MessagePackable, MessageMergeable
 		if(_source.length <= 4) { return; } this.size = (Integer)_fields[4].getSchema().convert(_source[4]);
 	}
 
+	@Override
+	public void messageUnpack(Unpacker _pac) throws IOException, MessageTypeException {
+		int _length = _pac.unpackArray();
+		if(_length <= 0) { return; }
+		this.uri = _pac.unpackString();
+		if(_length <= 1) { return; }
+		this.title = _pac.unpackString();
+		if(_length <= 2) { return; }
+		this.width = _pac.unpackInt();
+		if(_length <= 3) { return; }
+		this.height = _pac.unpackInt();
+		if(_length <= 4) { return; }
+		this.size = _pac.unpackInt();
+		for(int _i=5; _i < _length; ++_i) { _pac.unpackObject(); }
+	}
+
 	@SuppressWarnings("unchecked")
 	public static Image createFromMessage(Object[] _message)
 	{
@@ -96,7 +129,7 @@ final class Image implements MessagePackable, MessageMergeable
 	}
 }
 
-final class Media implements MessagePackable, MessageMergeable
+final class Media implements MessagePackable, MessageConvertable, MessageUnpackable
 {
 	private static final ClassSchema _SCHEMA = (ClassSchema)Schema.load("(class Media (package serializers.msgpack) (field uri string) (field title string) (field width int) (field height int) (field format string) (field duration long) (field size long) (field bitrate int) (field person (array string)) (field player int) (field copyright string))");
 	public static ClassSchema getSchema() { return _SCHEMA; }
@@ -135,7 +168,7 @@ final class Media implements MessagePackable, MessageMergeable
 
 	@Override
 	@SuppressWarnings("unchecked")
-	public void messageMerge(Object obj) throws MessageTypeException
+	public void messageConvert(Object obj) throws MessageTypeException
 	{
 		Object[] _source = ((List)obj).toArray();
 		FieldSchema[] _fields = _SCHEMA.getFields();
@@ -152,6 +185,39 @@ final class Media implements MessagePackable, MessageMergeable
 		if(_source.length <= 10) { return; } this.copyright = (String)_fields[10].getSchema().convert(_source[10]);
 	}
 
+	@Override
+	public void messageUnpack(Unpacker _pac) throws IOException, MessageTypeException {
+		int _length = _pac.unpackArray();
+		if(_length <= 0) { return; }
+		this.uri = _pac.unpackString();
+		if(_length <= 1) { return; }
+		this.title = _pac.unpackString();
+		if(_length <= 2) { return; }
+		this.width = _pac.unpackInt();
+		if(_length <= 3) { return; }
+		this.height = _pac.unpackInt();
+		if(_length <= 4) { return; }
+		this.format = _pac.unpackString();
+		if(_length <= 5) { return; }
+		this.duration = _pac.unpackLong();
+		if(_length <= 6) { return; }
+		this.size = _pac.unpackLong();
+		if(_length <= 7) { return; }
+		this.bitrate = _pac.unpackInt();
+		if(_length <= 8) { return; }
+		int _person_length = _pac.unpackArray();
+		this.person = new ArrayList(_person_length);
+		for(int _i=0; _i < _person_length; ++_i) {
+			String _person_i = _pac.unpackString();
+			this.person.add(_person_i);
+		}
+		if(_length <= 9) { return; }
+		this.player = _pac.unpackInt();
+		if(_length <= 10) { return; }
+		this.copyright = _pac.unpackString();
+		for(int _i=11; _i < _length; ++_i) { _pac.unpackObject(); }
+	}
+
 	@SuppressWarnings("unchecked")
 	public static Media createFromMessage(Object[] _message)
 	{
diff --git a/java/test/thrift-protobuf-compare/tpc/src/serializers/msgpack/MessagePackDirectSerializer.java b/java/test/thrift-protobuf-compare/tpc/src/serializers/msgpack/MessagePackDirectSerializer.java
new file mode 100644
index 0000000..25f932b
--- /dev/null
+++ b/java/test/thrift-protobuf-compare/tpc/src/serializers/msgpack/MessagePackDirectSerializer.java
@@ -0,0 +1,68 @@
+package serializers.msgpack;
+
+import java.io.*;
+import java.util.*;
+import org.msgpack.*;
+import serializers.ObjectSerializer;
+
+public class MessagePackDirectSerializer implements ObjectSerializer<MediaContent>
+{
+	public String getName() {
+		return "msgpack-direct";
+	}
+
+	public MediaContent create() throws Exception {
+		Media media = new Media();
+		media.uri = "http://javaone.com/keynote.mpg";
+		media.format = "video/mpg4";
+		media.title = "Javaone Keynote";
+		media.duration = 1234567L;
+		media.bitrate = 0;
+		media.person = new ArrayList<String>(2);
+		media.person.add("Bill Gates");
+		media.person.add("Steve Jobs");
+		media.player = 0;
+		media.height = 0;
+		media.width = 0;
+		media.size = 123L;
+		media.copyright = "";
+
+		Image image1 = new Image();
+		image1.uri = "http://javaone.com/keynote_large.jpg";
+		image1.width = 0;
+		image1.height = 0;
+		image1.size = 2;
+		image1.title = "Javaone Keynote";
+
+		Image image2 = new Image();
+		image2.uri = "http://javaone.com/keynote_thumbnail.jpg";
+		image2.width = 0;
+		image2.height = 0;
+		image2.size = 1;
+		image2.title = "Javaone Keynote";
+
+		MediaContent content = new MediaContent();
+		content.media = media;
+		content.image = new ArrayList<Image>(2);
+		content.image.add(image1);
+		content.image.add(image2);
+
+		return content;
+	}
+
+	public byte[] serialize(MediaContent content) throws Exception {
+		ByteArrayOutputStream os = new ByteArrayOutputStream();
+		Packer pk = new Packer(os);
+		pk.pack(content);
+		return os.toByteArray();
+	}
+
+	public MediaContent deserialize(byte[] array) throws Exception {
+		Unpacker pac = new Unpacker();
+		pac.wrap(array);
+		MediaContent obj = new MediaContent();
+		obj.messageUnpack(pac);
+		return obj;
+	}
+}
+
diff --git a/java/test/thrift-protobuf-compare/tpc/src/serializers/msgpack/MessagePackDynamicSerializer.java b/java/test/thrift-protobuf-compare/tpc/src/serializers/msgpack/MessagePackDynamicSerializer.java
index c8a88ac..9c8ccbe 100644
--- a/java/test/thrift-protobuf-compare/tpc/src/serializers/msgpack/MessagePackDynamicSerializer.java
+++ b/java/test/thrift-protobuf-compare/tpc/src/serializers/msgpack/MessagePackDynamicSerializer.java
@@ -60,7 +60,7 @@ public class MessagePackDynamicSerializer implements ObjectSerializer<Object>
 	}
 
 	public Object deserialize(byte[] array) throws Exception {
-		UnbufferedUnpacker pac = new UnbufferedUnpacker();
+		Unpacker pac = new Unpacker();
 		pac.execute(array);
 		return (Object)pac.getData();
 	}
diff --git a/java/test/thrift-protobuf-compare/tpc/src/serializers/msgpack/MessagePackGenericSerializer.java b/java/test/thrift-protobuf-compare/tpc/src/serializers/msgpack/MessagePackGenericSerializer.java
index 4935899..316389a 100644
--- a/java/test/thrift-protobuf-compare/tpc/src/serializers/msgpack/MessagePackGenericSerializer.java
+++ b/java/test/thrift-protobuf-compare/tpc/src/serializers/msgpack/MessagePackGenericSerializer.java
@@ -62,7 +62,7 @@ public class MessagePackGenericSerializer implements ObjectSerializer<Object>
 	}
 
 	public Object deserialize(byte[] array) throws Exception {
-		UnbufferedUnpacker pac = new UnbufferedUnpacker().useSchema(MEDIA_CONTENT_SCHEMA);
+		Unpacker pac = new Unpacker().useSchema(MEDIA_CONTENT_SCHEMA);
 		pac.execute(array);
 		return (Object)pac.getData();
 	}
diff --git a/java/test/thrift-protobuf-compare/tpc/src/serializers/msgpack/MessagePackIndirectSerializer.java b/java/test/thrift-protobuf-compare/tpc/src/serializers/msgpack/MessagePackIndirectSerializer.java
index 2767474..e24472b 100644
--- a/java/test/thrift-protobuf-compare/tpc/src/serializers/msgpack/MessagePackIndirectSerializer.java
+++ b/java/test/thrift-protobuf-compare/tpc/src/serializers/msgpack/MessagePackIndirectSerializer.java
@@ -58,7 +58,7 @@ public class MessagePackIndirectSerializer implements ObjectSerializer<MediaCont
 	}
 
 	public MediaContent deserialize(byte[] array) throws Exception {
-		UnbufferedUnpacker pac = new UnbufferedUnpacker();
+		Unpacker pac = new Unpacker();
 		pac.execute(array);
 		Object obj = pac.getData();
 		return (MediaContent)MediaContent.getSchema().convert(obj);
diff --git a/java/test/thrift-protobuf-compare/tpc/src/serializers/msgpack/MessagePackSpecificSerializer.java b/java/test/thrift-protobuf-compare/tpc/src/serializers/msgpack/MessagePackSpecificSerializer.java
index 91ded5c..9b6a8ce 100644
--- a/java/test/thrift-protobuf-compare/tpc/src/serializers/msgpack/MessagePackSpecificSerializer.java
+++ b/java/test/thrift-protobuf-compare/tpc/src/serializers/msgpack/MessagePackSpecificSerializer.java
@@ -58,7 +58,7 @@ public class MessagePackSpecificSerializer implements ObjectSerializer<MediaCont
 	}
 
 	public MediaContent deserialize(byte[] array) throws Exception {
-		UnbufferedUnpacker pac = new UnbufferedUnpacker().useSchema(MediaContent.getSchema());
+		Unpacker pac = new Unpacker().useSchema(MediaContent.getSchema());
 		pac.execute(array);
 		return (MediaContent)pac.getData();
 	}