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 }