/*******************************************************************************
* Copyright (c) 1998, 2015 Oracle and/or its affiliates. All rights reserved.
* This program and the accompanying materials are made available under the
* terms of the Eclipse Public License v1.0 and Eclipse Distribution License v. 1.0
* which accompanies this distribution.
* The Eclipse Public License is available at http://www.eclipse.org/legal/epl-v10.html
* and the Eclipse Distribution License is available at
* http://www.eclipse.org/org/documents/edl-v10.php.
*
* Contributors:
* dclarke - Dynamic Persistence INCUBATION - Enhancement 200045
* http://wiki.eclipse.org/EclipseLink/Development/Dynamic
*
* This code is being developed under INCUBATION and is not currently included
* in the automated EclipseLink build. The API in this code may change, or
* may never be included in the product. Please provide feedback through mailing
* lists or the bug database.
******************************************************************************/
package org.eclipse.persistence.jpa.dynamic;
//EclipseLink imports
import org.eclipse.persistence.internal.identitymaps.CacheId;
import org.eclipse.persistence.internal.jpa.CMP3Policy;
import org.eclipse.persistence.internal.sessions.AbstractSession;
/**
* Custom CMPPolicy to handle Object[]. The parent class supports only List and
* ID class for composite keys.
*
* @author dclarke
* @since EclipseLink 1.2
*/
public class DynamicIdentityPolicy extends CMP3Policy {
@Override
public Object createPrimaryKeyFromId(Object key, AbstractSession session) {
if (key instanceof Object[]) {
return new CacheId((Object[])key);
}
return super.createPrimaryKeyFromId(key, session);
}
@Override
protected KeyElementAccessor[] initializePrimaryKeyFields(Class keyClass, AbstractSession session) {
if (keyClass == null && getDescriptor().getPrimaryKeyFields().size() > 1) {
KeyElementAccessor[] result = super.initializePrimaryKeyFields(null, session);
this.pkClass = Object[].class;
return result;
} else {
return super.initializePrimaryKeyFields(keyClass, session);
}
}
}