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.cache;
025    
026    /**
027     * @author Randall Hauch
028     */
029    public class ImmutableCachePolicy implements CachePolicy {
030    
031        private static final long serialVersionUID = 1L;
032        private final long timeToCache;
033    
034        public ImmutableCachePolicy( long timeToCache ) {
035            this.timeToCache = timeToCache;
036        }
037    
038        /**
039         * {@inheritDoc}
040         * 
041         * @see org.jboss.dna.graph.cache.CachePolicy#getTimeToLive()
042         */
043        public long getTimeToLive() {
044            return this.timeToCache;
045        }
046    
047        public CachePolicy getUnmodifiable() {
048            return this;
049        }
050    
051    }