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.connector.federation.contribution;
023
024 import java.util.Iterator;
025 import net.jcip.annotations.Immutable;
026 import org.jboss.dna.graph.Location;
027 import org.jboss.dna.graph.properties.DateTime;
028 import org.jboss.dna.graph.properties.Name;
029 import org.jboss.dna.graph.properties.Property;
030
031 /**
032 * The record of a source contributing only properties to a node.
033 *
034 * @author Randall Hauch
035 */
036 @Immutable
037 public class TwoPropertyContribution extends NonEmptyContribution {
038
039 /**
040 * This is the first version of this class. See the documentation of MergePlan.serialVersionUID.
041 */
042 private static final long serialVersionUID = 1L;
043
044 private final Property property1;
045 private final Property property2;
046
047 /**
048 * Create a contribution of node properties from the source with the supplied name.
049 *
050 * @param sourceName the name of the source, which may not be null or blank
051 * @param locationInSource the path in the source for this contributed information; may not be null
052 * @param expirationTime the time (in UTC) after which this contribution should be considered expired, or null if there is no
053 * expiration time
054 * @param property1 the first property from the source; may not be null
055 * @param property2 the first property from the source; may not be null
056 */
057 public TwoPropertyContribution( String sourceName,
058 Location locationInSource,
059 DateTime expirationTime,
060 Property property1,
061 Property property2 ) {
062 super(sourceName, locationInSource, expirationTime);
063 assert property1 != null;
064 assert property1.isEmpty() == false;
065 assert property2 != null;
066 assert property2.isEmpty() == false;
067 this.property1 = property1;
068 this.property2 = property2;
069 if (ContributionStatistics.RECORD) ContributionStatistics.record(2, 0);
070 }
071
072 /**
073 * {@inheritDoc}
074 *
075 * @see org.jboss.dna.connector.federation.contribution.Contribution#getProperties()
076 */
077 @Override
078 public Iterator<Property> getProperties() {
079 return new TwoValueIterator<Property>(property1, property2);
080 }
081
082 /**
083 * {@inheritDoc}
084 *
085 * @see org.jboss.dna.connector.federation.contribution.Contribution#getPropertyCount()
086 */
087 @Override
088 public int getPropertyCount() {
089 return 2;
090 }
091
092 /**
093 * {@inheritDoc}
094 *
095 * @see org.jboss.dna.connector.federation.contribution.Contribution#getProperty(org.jboss.dna.graph.properties.Name)
096 */
097 @Override
098 public Property getProperty( Name name ) {
099 if (this.property1.getName().equals(name)) return property1;
100 if (this.property2.getName().equals(name)) return property2;
101 return null;
102 }
103
104 }