001 /*
002 * JBoss DNA (http://www.jboss.org/dna)
003 * See the COPYRIGHT.txt file distributed with this work for information
004 * regarding copyright ownership. Some portions may be licensed
005 * to Red Hat, Inc. under one or more contributor license agreements.
006 * See the AUTHORS.txt file in the distribution for a full listing of
007 * individual contributors.
008 *
009 * JBoss DNA is free software. Unless otherwise indicated, all code in JBoss DNA
010 * is licensed to you under the terms of the GNU Lesser General Public License as
011 * published by the Free Software Foundation; either version 2.1 of
012 * the License, or (at your option) any later version.
013 *
014 * JBoss DNA is distributed in the hope that it will be useful,
015 * but WITHOUT ANY WARRANTY; without even the implied warranty of
016 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
017 * Lesser General Public License for more details.
018 *
019 * You should have received a copy of the GNU Lesser General Public
020 * License along with this software; if not, write to the Free
021 * Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
022 * 02110-1301 USA, or see the FSF site: http://www.fsf.org.
023 */
024 package org.jboss.dna.connector.store.jpa.model.basic;
025
026 import java.io.Serializable;
027 import javax.persistence.Column;
028 import javax.persistence.Embeddable;
029 import net.jcip.annotations.Immutable;
030 import org.jboss.dna.common.util.HashCode;
031
032 /**
033 * A unique identifer for a parent-child relationship.
034 *
035 * @author Randall Hauch
036 */
037 @Embeddable
038 @Immutable
039 @org.hibernate.annotations.Immutable
040 public class ChildId implements Serializable {
041
042 /**
043 * Version {@value}
044 */
045 private static final long serialVersionUID = 1L;
046
047 @Column( name = "WORKSPACE_ID", nullable = false )
048 private Long workspaceId;
049
050 @Column( name = "PARENT_UUID", nullable = false, length = 36 )
051 private String parentUuidString;
052
053 @Column( name = "CHILD_UUID", nullable = false, length = 36 )
054 private String childUuidString;
055
056 public ChildId() {
057 }
058
059 public ChildId( Long workspaceId,
060 NodeId parentId,
061 NodeId childId ) {
062 this.workspaceId = workspaceId;
063 if (parentId != null) this.parentUuidString = parentId.getUuidString();
064 if (childId != null) this.childUuidString = childId.getUuidString();
065 }
066
067 public ChildId( Long workspaceId,
068 String parentUuid,
069 String childUuid ) {
070 this.workspaceId = workspaceId;
071 this.parentUuidString = parentUuid;
072 this.childUuidString = childUuid;
073 }
074
075 /**
076 * @return parentUuidString
077 */
078 public String getParentUuidString() {
079 return parentUuidString;
080 }
081
082 /**
083 * @return childUuidString
084 */
085 public String getChildUuidString() {
086 return childUuidString;
087 }
088
089 /**
090 * @return workspaceId
091 */
092 public Long getWorkspaceId() {
093 return workspaceId;
094 }
095
096 /**
097 * {@inheritDoc}
098 *
099 * @see java.lang.Object#hashCode()
100 */
101 @Override
102 public int hashCode() {
103 return HashCode.compute(parentUuidString, childUuidString);
104 }
105
106 /**
107 * {@inheritDoc}
108 *
109 * @see java.lang.Object#equals(java.lang.Object)
110 */
111 @Override
112 public boolean equals( Object obj ) {
113 if (obj == this) return true;
114 if (obj instanceof ChildId) {
115 ChildId that = (ChildId)obj;
116 if (this.workspaceId == null) {
117 if (that.workspaceId != null) return false;
118 } else {
119 if (!this.workspaceId.equals(that.workspaceId)) return false;
120 }
121 if (this.parentUuidString == null) {
122 if (that.parentUuidString != null) return false;
123 } else {
124 if (!this.parentUuidString.equals(that.parentUuidString)) return false;
125 }
126 if (this.childUuidString == null) {
127 if (that.childUuidString != null) return false;
128 } else {
129 if (!this.childUuidString.equals(that.childUuidString)) return false;
130 }
131 return true;
132 }
133 return false;
134 }
135
136 /**
137 * {@inheritDoc}
138 *
139 * @see java.lang.Object#toString()
140 */
141 @Override
142 public String toString() {
143 return "Child " + childUuidString + " of " + parentUuidString + " in workspace " + workspaceId;
144 }
145
146 }