| /* |
| * Copyright (c) 1998, 2020 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: |
| // 04/24/2009-2.0 Guy Pelletier |
| // - 270011: JPA 2.0 MappedById support |
| // 04/27/2010-2.1 Guy Pelletier |
| // - 309856: MappedSuperclasses from XML are not being initialized properly |
| // 03/24/2011-2.3 Guy Pelletier |
| // - 337323: Multi-tenant with shared schema support (part 1) |
| package org.eclipse.persistence.internal.jpa.metadata.accessors.mappings; |
| |
| import org.eclipse.persistence.internal.jpa.metadata.accessors.classes.ClassAccessor; |
| import org.eclipse.persistence.internal.jpa.metadata.accessors.objects.MetadataAnnotatedElement; |
| |
| /** |
| * A derived id class accessor is found within an entity's embedded id class |
| * and is a reference back to a parents id class. |
| * |
| * Key notes: |
| * - any metadata mapped from XML to this class must be compared in the |
| * equals method. |
| * - any metadata mapped from XML to this class must be handled in the merge |
| * method. (merging is done at the accessor/mapping level) |
| * - any metadata mapped from XML to this class must be initialized in the |
| * initXMLObject method. |
| * - methods should be preserved in alphabetical order. |
| * |
| * @author Guy Pelletier |
| * @since EclipseLink 1.2 |
| */ |
| public class DerivedIdClassAccessor extends EmbeddedAccessor { |
| /** |
| * INTERNAL: |
| * Constructor called from an Embedabble IdClass. |
| */ |
| public DerivedIdClassAccessor(MetadataAnnotatedElement accessibleObject, ClassAccessor classAccessor) { |
| super(null, accessibleObject, classAccessor); |
| } |
| |
| /** |
| * INTERNAL: |
| */ |
| @Override |
| public boolean equals(Object objectToCompare) { |
| return super.equals(objectToCompare) && objectToCompare instanceof DerivedIdClassAccessor; |
| } |
| |
| @Override |
| public int hashCode() { |
| return super.hashCode(); |
| } |
| |
| /** |
| * INTERNAL: |
| * Return true if this accessor is a derived id class accessor. That is, |
| * an EmbeddedId that has a portion of its accessors mapped through an |
| * owning entities ManyToOne relationship using a MapsId. |
| */ |
| @Override |
| public boolean isDerivedIdClass(){ |
| return true; |
| } |
| } |