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From-SVN: r102074

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diff --git a/libjava/classpath/javax/xml/parsers/DocumentBuilderFactory.java b/libjava/classpath/javax/xml/parsers/DocumentBuilderFactory.java
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+/* DocumentBuilderFactory.java -- 
+   Copyright (C) 2004, 2005  Free Software Foundation, Inc.
+
+This file is part of GNU Classpath.
+
+GNU Classpath is free software; you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation; either version 2, or (at your option)
+any later version.
+
+GNU Classpath is distributed in the hope that it will be useful, but
+WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with GNU Classpath; see the file COPYING.  If not, write to the
+Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+02110-1301 USA.
+
+Linking this library statically or dynamically with other modules is
+making a combined work based on this library.  Thus, the terms and
+conditions of the GNU General Public License cover the whole
+combination.
+
+As a special exception, the copyright holders of this library give you
+permission to link this library with independent modules to produce an
+executable, regardless of the license terms of these independent
+modules, and to copy and distribute the resulting executable under
+terms of your choice, provided that you also meet, for each linked
+independent module, the terms and conditions of the license of that
+module.  An independent module is a module which is not derived from
+or based on this library.  If you modify this library, you may extend
+this exception to your version of the library, but you are not
+obligated to do so.  If you do not wish to do so, delete this
+exception statement from your version. */
+
+package javax.xml.parsers;
+
+import java.io.BufferedReader;
+import java.io.File;
+import java.io.FileInputStream;
+import java.io.InputStream;
+import java.io.InputStreamReader;
+import java.io.IOException;
+import java.util.Properties;
+import javax.xml.validation.Schema;
+
+/**
+ * Factory for obtaining document builders.
+ * Instances of this class are <em>not</em> guaranteed to be thread safe.
+ *
+ * @author (a href='mailto:dog@gnu.org'>Chris Burdess</a)
+ */
+public abstract class DocumentBuilderFactory
+{
+
+  private boolean namespaceAware;
+  private boolean validating;
+  private boolean ignoringElementContentWhitespace;
+  private boolean expandEntityReferences = true;
+  private boolean ignoringComments;
+  private boolean coalescing;
+  private Schema schema;
+  private boolean xIncludeAware;
+
+  protected DocumentBuilderFactory()
+  {
+  }
+
+  /**
+   * Creates a new factory instance.
+   * The implementation class to load is the first found in the following
+   * locations:
+   * <ol>
+   * <li>the <code>javax.xml.parsers.DocumentBuilderFactory</code> system
+   * property</li>
+   * <li>the above named property value in the
+   * <code><i>$JAVA_HOME</i>/lib/jaxp.properties</code> file</li>
+   * <li>the class name specified in the
+   * <code>META-INF/services/javax.xml.parsers.DocumentBuilderFactory</code>
+   * system resource</li>
+   * <li>the default factory class</li>
+   * </ol>
+   */
+  public static DocumentBuilderFactory newInstance()
+  {
+    ClassLoader loader = Thread.currentThread().getContextClassLoader();
+    if (loader == null)
+      {
+        loader = DocumentBuilderFactory.class.getClassLoader();
+      }
+    String className = null;
+    int count = 0;
+    do
+      {
+        className = getFactoryClassName(loader, count++);
+        if (className != null)
+          {
+            try
+              {
+                Class t = (loader != null) ? loader.loadClass(className) :
+                  Class.forName(className);
+                return (DocumentBuilderFactory) t.newInstance();
+              }
+            catch (ClassNotFoundException e)
+              {
+                className = null;
+              }
+            catch (Exception e)
+              {
+                throw new FactoryConfigurationError(e,
+                    "error instantiating class " + className);
+              } 
+          }
+      }
+    while (className == null && count < 3);
+    return new gnu.xml.dom.DomDocumentBuilderFactory();
+  }
+  
+  private static String getFactoryClassName(ClassLoader loader, int attempt)
+  {
+    final String propertyName = "javax.xml.parsers.DocumentBuilderFactory";
+    switch (attempt)
+      {
+        case 0:
+          return System.getProperty(propertyName);
+        case 1:
+          try
+            {
+              File file = new File(System.getProperty("java.home"));
+              file = new File(file, "lib");
+              file = new File(file, "jaxp.properties");
+              InputStream in = new FileInputStream(file);
+              Properties props = new Properties();
+              props.load(in);
+              in.close();
+              return props.getProperty(propertyName);
+            }
+          catch (IOException e)
+            {
+              return null;
+            }
+        case 2: 
+          try
+            {
+              String serviceKey = "/META-INF/services/" + propertyName;
+              InputStream in = (loader != null) ?
+                loader.getResourceAsStream(serviceKey) :
+                DocumentBuilderFactory.class.getResourceAsStream(serviceKey);
+              if (in != null)
+                {
+                  BufferedReader r =
+                    new BufferedReader(new InputStreamReader(in));
+                  String ret = r.readLine();
+                  r.close();
+                  return ret;
+                }
+            }
+          catch (IOException e)
+            {
+            }
+          return null;
+        default:
+          return null;
+      }
+  }
+
+  /**
+   * Creates a new document builder instance using the currently specified
+   * factory configuration.
+   * @exception ParserConfigurationException if the specified configuration
+   * is not supported
+   */
+  public abstract DocumentBuilder newDocumentBuilder()
+    throws ParserConfigurationException;
+
+  /**
+   * Sets whether document builders obtained from this factory will be XML
+   * Namespace aware.
+   */
+  public void setNamespaceAware(boolean awareness)
+  {
+    namespaceAware = awareness;
+  }
+
+  /**
+   * Sets whether document builders obtained from this factory will validate
+   * their input.
+   */
+  public void setValidating(boolean validating)
+  {
+    this.validating = validating;
+  }
+
+  /**
+   * Sets whether document builders obtained from this factory will
+   * eliminate whitespace within elements that have an element-only content
+   * model.
+   */
+  public void setIgnoringElementContentWhitespace(boolean whitespace)
+  {
+    ignoringElementContentWhitespace = whitespace;
+  }
+
+  /**
+   * Sets whether document builders obtained from this factory will expand
+   * entity reference nodes.
+   */
+  public void setExpandEntityReferences(boolean expandEntityRef)
+  {
+    expandEntityReferences = expandEntityRef;
+  }
+
+  /**
+   * Sets whether document builders obtained from this factory will discard
+   * comment nodes.
+   */
+  public void setIgnoringComments(boolean ignoreComments)
+  {
+    ignoringComments = ignoreComments;
+  }
+
+  /**
+   * Sets whether document builders obtained from this factory will convert
+   * CDATA sections to text nodes and normalize adjacent text nodes into a
+   * single text node.
+   */
+  public void setCoalescing(boolean coalescing)
+  {
+    this.coalescing = coalescing;
+  }
+
+  /**
+   * Indicates whether document builders obtained from this factory will be
+   * XML Namespace aware.
+   */
+  public boolean isNamespaceAware()
+  {
+    return namespaceAware;
+  }
+
+  /**
+   * Indicates whether document builders obtained from this factory will
+   * validate their input.
+   */
+  public boolean isValidating()
+  {
+    return validating;
+  }
+
+  /**
+   * Indicates whether document builders obtained from this factory will
+   * eliminate whitespace within elements that have an element-only content
+   * model.
+   */
+  public boolean isIgnoringElementContentWhitespace()
+  {
+    return ignoringElementContentWhitespace;
+  }
+
+  /**
+   * Indicates whether document builders obtained from this factory will
+   * expand entity reference nodes.
+   */
+  public boolean isExpandEntityReferences()
+  {
+    return expandEntityReferences;
+  }
+
+  /**
+   * Indicates whether document builders obtained from this factory will
+   * discard comment nodes.
+   */
+  public boolean isIgnoringComments()
+  {
+    return ignoringComments;
+  }
+
+  /**
+   * Indicates whether document builders obtained from this factory will
+   * convert CDATA sections to text nodes and normalize adjacent text nodes
+   * into a single text node.
+   */
+  public boolean isCoalescing()
+  {
+    return coalescing;
+  }
+
+  /**
+   * Set the named attribute on the underlying implementation.
+   * @param name the name of the attribute
+   * @param value the new value
+   * @exception IllegalArgumentException if the attribute is not recognized
+   */
+  public abstract void setAttribute(String name, Object value) 
+    throws IllegalArgumentException;
+
+  /**
+   * Retrieves the named attribute value from the underlying implementation.
+   * @param name the name of the attribute
+   * @exception IllegalArgumentException if the attribute is not recognized
+   */
+  public abstract Object getAttribute(String name) 
+    throws IllegalArgumentException;
+
+  // -- JAXP 1.3 methods --
+
+  /**
+   * Returns the schema.
+   * @see #setSchema
+   */
+  public Schema getSchema()
+  {
+    return schema;
+  }
+
+  /**
+   * Sets the schema.
+   * @see #getSchema
+   */
+  public void setSchema(Schema schema)
+  {
+    this.schema = schema;
+  }
+
+  /**
+   * Indicates whether parsers obtained from this factory will be XInclude
+   * aware.
+   * @since 1.3
+   */
+  public boolean isXIncludeAware()
+  {
+    return xIncludeAware;
+  }
+
+  /**
+   * Sets whether parsers obtained from this factory will be XInclude aware.
+   * @since 1.3
+   */
+  public void setXIncludeAware(boolean state)
+  {
+    xIncludeAware = state;
+  }
+  
+}