/******************************************************************************* | |
* Copyright (c) 1998, 2013 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: | |
* Oracle - initial API and implementation from Oracle TopLink | |
******************************************************************************/ | |
package org.eclipse.persistence.internal.oxm.documentpreservation; | |
import java.util.WeakHashMap; | |
import org.eclipse.persistence.oxm.documentpreservation.AppendNewElementsOrderingPolicy; | |
/** | |
* INTERNAL: | |
* <p><b>Purpose:</b>Provide an implementation of DocumentPreservation Policy that accesses the | |
* session cache to store Objects and their associated nodes. | |
* <p><b>Responsibilities:</b><ul> | |
* <li>Add new objects and their associated nodes into the Session cache, wrapping them in a weak | |
* reference. | |
* <li>Lookup the node for a given Object | |
* | |
* @author mmacivor | |
* @since TopLink 11g | |
*/ | |
public class DescriptorLevelDocumentPreservationPolicy extends AbstractDocumentPreservationPolicy { | |
public DescriptorLevelDocumentPreservationPolicy() { | |
super(); | |
nodesToObjects = new WeakHashMap(); | |
objectsToNodes = new WeakHashMap(); | |
this.setNodeOrderingPolicy(new AppendNewElementsOrderingPolicy()); | |
} | |
} |