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 java.util.UUID;
028 import javax.persistence.Column;
029 import javax.persistence.Embeddable;
030 import net.jcip.annotations.Immutable;
031
032 /**
033 * An identifier for a node, comprised of a single {@link UUID}, and {@link Embeddable embeddable} in a persistent entity. The
034 * identifier takes the form of two <code>long</code> columns: one for the UUID's {@link UUID#getMostSignificantBits() most
035 * significant bits} and one for its {@link UUID#getLeastSignificantBits() least significant bits}.
036 *
037 * @author Randall Hauch
038 */
039 @Embeddable
040 @Immutable
041 @org.hibernate.annotations.Immutable
042 public class NodeId implements Serializable {
043
044 /**
045 * Version {@value}
046 */
047 private static final long serialVersionUID = 1L;
048
049 @Column( name = "WORKSPACE_ID", nullable = false )
050 private Long workspaceId;
051
052 @Column( name = "UUID", nullable = true )
053 private String uuidString;
054
055 public NodeId() {
056 }
057
058 public NodeId( Long workspaceId,
059 String uuidString ) {
060 this.workspaceId = workspaceId;
061 this.uuidString = uuidString;
062 }
063
064 /**
065 * @return uuidString
066 */
067 public String getUuidString() {
068 return uuidString;
069 }
070
071 /**
072 * @param uuidString Sets uuidString to the specified value.
073 */
074 public void setUuidString( String uuidString ) {
075 this.uuidString = uuidString;
076 }
077
078 /**
079 * @return workspaceId
080 */
081 public Long getWorkspaceId() {
082 return workspaceId;
083 }
084
085 /**
086 * @param workspaceId Sets workspaceId to the specified value.
087 */
088 public void setWorkspaceId( Long workspaceId ) {
089 this.workspaceId = workspaceId;
090 }
091
092 /**
093 * {@inheritDoc}
094 *
095 * @see java.lang.Object#hashCode()
096 */
097 @Override
098 public int hashCode() {
099 return uuidString.hashCode();
100 }
101
102 /**
103 * {@inheritDoc}
104 *
105 * @see java.lang.Object#equals(java.lang.Object)
106 */
107 @Override
108 public boolean equals( Object obj ) {
109 if (obj == this) return true;
110 if (obj instanceof NodeId) {
111 NodeId that = (NodeId)obj;
112 if (this.uuidString == null) {
113 if (that.uuidString != null) return false;
114 } else {
115 if (!this.uuidString.equals(that.uuidString)) return false;
116 }
117 return true;
118 }
119 return false;
120 }
121
122 /**
123 * {@inheritDoc}
124 *
125 * @see java.lang.Object#toString()
126 */
127 @Override
128 public String toString() {
129 return uuidString + " in workspace " + workspaceId;
130 }
131 }