| /* |
| * Copyright (c) 1998, 2019 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 v. 2.0 which is available at |
| * http://www.eclipse.org/legal/epl-2.0, |
| * or the Eclipse Distribution License v. 1.0 which is available at |
| * http://www.eclipse.org/org/documents/edl-v10.php. |
| * |
| * SPDX-License-Identifier: EPL-2.0 OR BSD-3-Clause |
| */ |
| |
| // 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> |
| * <li>Lookup the node for a given Object</li> |
| * </ul> |
| * |
| * @author mmacivor |
| * @since TopLink 11g |
| */ |
| |
| public class DescriptorLevelDocumentPreservationPolicy extends AbstractDocumentPreservationPolicy { |
| |
| public DescriptorLevelDocumentPreservationPolicy() { |
| super(); |
| nodesToObjects = new WeakHashMap(); |
| objectsToNodes = new WeakHashMap(); |
| this.setNodeOrderingPolicy(new AppendNewElementsOrderingPolicy()); |
| } |
| |
| } |