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/*-
* See the file LICENSE for redistribution information.
*
* Copyright (c) 2002, 2015 Oracle and/or its affiliates. All rights reserved.
*
*/
package com.sleepycat.persist;
import com.sleepycat.bind.EntityBinding;
import com.sleepycat.db.DatabaseEntry;
/**
* A ValueAdapter where the "value" is the entity.
*
* @author Mark Hayes
*/
class EntityValueAdapter<V> implements ValueAdapter<V> {
private EntityBinding entityBinding;
private boolean isSecondary;
EntityValueAdapter(Class<V> entityClass,
EntityBinding entityBinding,
boolean isSecondary) {
this.entityBinding = entityBinding;
this.isSecondary = isSecondary;
}
public DatabaseEntry initKey() {
return new DatabaseEntry();
}
public DatabaseEntry initPKey() {
return isSecondary ? (new DatabaseEntry()) : null;
}
public DatabaseEntry initData() {
return new DatabaseEntry();
}
public void clearEntries(DatabaseEntry key,
DatabaseEntry pkey,
DatabaseEntry data) {
key.setData(null);
if (isSecondary) {
pkey.setData(null);
}
data.setData(null);
}
public V entryToValue(DatabaseEntry key,
DatabaseEntry pkey,
DatabaseEntry data) {
return (V) entityBinding.entryToObject(isSecondary ? pkey : key, data);
}
public void valueToData(V value, DatabaseEntry data) {
entityBinding.objectToData(value, data);
}
}
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