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.graph.property.basic;
025    
026    import java.util.UUID;
027    import net.jcip.annotations.Immutable;
028    import org.jboss.dna.common.text.TextEncoder;
029    import org.jboss.dna.graph.property.Path;
030    import org.jboss.dna.graph.property.Reference;
031    
032    /**
033     * @author Randall Hauch
034     */
035    @Immutable
036    public class UuidReference implements Reference {
037    
038        /**
039         */
040        private static final long serialVersionUID = 2299467578161645109L;
041        private UUID uuid;
042    
043        public UuidReference( UUID uuid ) {
044            this.uuid = uuid;
045        }
046    
047        /**
048         * @return uuid
049         */
050        public UUID getUuid() {
051            return this.uuid;
052        }
053    
054        /**
055         * {@inheritDoc}
056         */
057        public String getString() {
058            return this.uuid.toString();
059        }
060    
061        /**
062         * {@inheritDoc}
063         */
064        public String getString( TextEncoder encoder ) {
065            if (encoder == null) encoder = Path.DEFAULT_ENCODER;
066            return encoder.encode(getString());
067        }
068    
069        /**
070         * {@inheritDoc}
071         */
072        public int compareTo( Reference that ) {
073            if (this == that) return 0;
074            if (that instanceof UuidReference) {
075                return this.uuid.compareTo(((UuidReference)that).getUuid());
076            }
077            return this.getString().compareTo(that.getString());
078        }
079    
080        /**
081         * {@inheritDoc}
082         */
083        @Override
084        public boolean equals( Object obj ) {
085            if (obj == this) return true;
086            if (obj instanceof UuidReference) {
087                return this.uuid.equals(((UuidReference)obj).getUuid());
088            }
089            if (obj instanceof Reference) {
090                return this.getString().equals(((Reference)obj).getString());
091            }
092            return super.equals(obj);
093        }
094    
095        /**
096         * {@inheritDoc}
097         */
098        @Override
099        public String toString() {
100            return this.uuid.toString();
101        }
102    
103    }