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.federation.contribution;
025
026 import java.util.Iterator;
027 import net.jcip.annotations.Immutable;
028 import org.jboss.dna.graph.Location;
029 import org.jboss.dna.graph.property.DateTime;
030 import org.jboss.dna.graph.property.Name;
031 import org.jboss.dna.graph.property.Property;
032
033 /**
034 * The record of a source contributing only properties to a node.
035 *
036 * @author Randall Hauch
037 */
038 @Immutable
039 public class OnePropertyContribution extends NonEmptyContribution {
040
041 /**
042 * This is the first version of this class. See the documentation of MergePlan.serialVersionUID.
043 */
044 private static final long serialVersionUID = 1L;
045
046 private final Property property;
047
048 /**
049 * Create a contribution of node properties from the source with the supplied name.
050 *
051 * @param sourceName the name of the source, which may not be null or blank
052 * @param workspaceName the name of the workspace, which may not be null or blank
053 * @param locationInSource the location in the source for this contributed information; may not be null
054 * @param expirationTime the time (in UTC) after which this contribution should be considered expired, or null if there is no
055 * expiration time
056 * @param property the property from the source; may not be null
057 */
058 public OnePropertyContribution( String sourceName,
059 String workspaceName,
060 Location locationInSource,
061 DateTime expirationTime,
062 Property property ) {
063 super(sourceName, workspaceName, locationInSource, expirationTime);
064 assert property != null;
065 assert property.isEmpty() == false;
066 this.property = property;
067 if (ContributionStatistics.RECORD) ContributionStatistics.record(1, 0);
068 }
069
070 /**
071 * {@inheritDoc}
072 *
073 * @see org.jboss.dna.connector.federation.contribution.Contribution#getProperties()
074 */
075 @Override
076 public Iterator<Property> getProperties() {
077 return new OneValueIterator<Property>(property);
078 }
079
080 /**
081 * {@inheritDoc}
082 *
083 * @see org.jboss.dna.connector.federation.contribution.Contribution#getPropertyCount()
084 */
085 @Override
086 public int getPropertyCount() {
087 return 1;
088 }
089
090 /**
091 * {@inheritDoc}
092 *
093 * @see org.jboss.dna.connector.federation.contribution.Contribution#getProperty(org.jboss.dna.graph.property.Name)
094 */
095 @Override
096 public Property getProperty( Name name ) {
097 return this.property.getName().equals(name) ? property : null;
098 }
099
100 }