001    /*
002     * JBoss, Home of Professional Open Source.
003     * Copyright 2008, Red Hat Middleware LLC, and individual contributors
004     * as indicated by the @author tags. See the copyright.txt file in the
005     * distribution for a full listing of individual contributors. 
006     *
007     * This is free software; you can redistribute it and/or modify it
008     * under the terms of the GNU Lesser General Public License as
009     * published by the Free Software Foundation; either version 2.1 of
010     * the License, or (at your option) any later version.
011     *
012     * This software is distributed in the hope that it will be useful,
013     * but WITHOUT ANY WARRANTY; without even the implied warranty of
014     * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
015     * Lesser General Public License for more details.
016     *
017     * You should have received a copy of the GNU Lesser General Public
018     * License along with this software; if not, write to the Free
019     * Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
020     * 02110-1301 USA, or see the FSF site: http://www.fsf.org.
021     */
022    package org.jboss.dna.graph.properties.basic;
023    
024    import java.util.UUID;
025    import net.jcip.annotations.Immutable;
026    import org.jboss.dna.common.text.TextEncoder;
027    import org.jboss.dna.graph.properties.Path;
028    import org.jboss.dna.graph.properties.Reference;
029    
030    /**
031     * @author Randall Hauch
032     */
033    @Immutable
034    public class UuidReference implements Reference {
035    
036        /**
037         */
038        private static final long serialVersionUID = 2299467578161645109L;
039        private UUID uuid;
040    
041        public UuidReference( UUID uuid ) {
042            this.uuid = uuid;
043        }
044    
045        /**
046         * @return uuid
047         */
048        public UUID getUuid() {
049            return this.uuid;
050        }
051    
052        /**
053         * {@inheritDoc}
054         */
055        public String getString() {
056            return this.uuid.toString();
057        }
058    
059        /**
060         * {@inheritDoc}
061         */
062        public String getString( TextEncoder encoder ) {
063            if (encoder == null) encoder = Path.DEFAULT_ENCODER;
064            return encoder.encode(getString());
065        }
066    
067        /**
068         * {@inheritDoc}
069         */
070        public int compareTo( Reference that ) {
071            if (this == that) return 0;
072            if (that instanceof UuidReference) {
073                return this.uuid.compareTo(((UuidReference)that).getUuid());
074            }
075            return this.getString().compareTo(that.getString());
076        }
077    
078        /**
079         * {@inheritDoc}
080         */
081        @Override
082        public boolean equals( Object obj ) {
083            if (obj == this) return true;
084            if (obj instanceof UuidReference) {
085                return this.uuid.equals(((UuidReference)obj).getUuid());
086            }
087            if (obj instanceof Reference) {
088                return this.getString().equals(((Reference)obj).getString());
089            }
090            return super.equals(obj);
091        }
092    
093        /**
094         * {@inheritDoc}
095         */
096        @Override
097        public String toString() {
098            return this.uuid.toString();
099        }
100    
101    }