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.merge; 023 024 import java.util.Iterator; 025 import java.util.NoSuchElementException; 026 import net.jcip.annotations.ThreadSafe; 027 import org.jboss.dna.common.util.HashCode; 028 import org.jboss.dna.connector.federation.contribution.Contribution; 029 030 /** 031 * @author Randall Hauch 032 */ 033 @ThreadSafe 034 public class FiveContributionMergePlan extends MergePlan { 035 036 private static final long serialVersionUID = 1L; 037 private final Contribution contribution1; 038 private final Contribution contribution2; 039 private final Contribution contribution3; 040 private final Contribution contribution4; 041 private final Contribution contribution5; 042 043 /** 044 * @param contribution1 the first contribution for this merge plan 045 * @param contribution2 the second contribution for this merge plan 046 * @param contribution3 the third contribution for this merge plan 047 * @param contribution4 the fourth contribution for this merge plan 048 * @param contribution5 the fifth contribution for this merge plan 049 */ 050 /*package*/FiveContributionMergePlan( Contribution contribution1, 051 Contribution contribution2, 052 Contribution contribution3, 053 Contribution contribution4, 054 Contribution contribution5 ) { 055 assert contribution1 != null; 056 assert contribution2 != null; 057 assert contribution3 != null; 058 assert contribution4 != null; 059 assert contribution5 != null; 060 this.contribution1 = contribution1; 061 this.contribution2 = contribution2; 062 this.contribution3 = contribution3; 063 this.contribution4 = contribution4; 064 this.contribution5 = contribution5; 065 assert checkEachContributionIsFromDistinctSource(); 066 } 067 068 /** 069 * {@inheritDoc} 070 * 071 * @see org.jboss.dna.connector.federation.merge.MergePlan#getContributionCount() 072 */ 073 @Override 074 public int getContributionCount() { 075 return 5; 076 } 077 078 /** 079 * {@inheritDoc} 080 * 081 * @see org.jboss.dna.connector.federation.merge.MergePlan#getContributionFrom(java.lang.String) 082 */ 083 @Override 084 public Contribution getContributionFrom( String sourceName ) { 085 if (contribution1.getSourceName().equals(sourceName)) return contribution1; 086 if (contribution2.getSourceName().equals(sourceName)) return contribution2; 087 if (contribution3.getSourceName().equals(sourceName)) return contribution3; 088 if (contribution4.getSourceName().equals(sourceName)) return contribution4; 089 if (contribution5.getSourceName().equals(sourceName)) return contribution5; 090 return null; 091 } 092 093 /** 094 * {@inheritDoc} 095 * 096 * @see java.lang.Iterable#iterator() 097 */ 098 public Iterator<Contribution> iterator() { 099 return new Iterator<Contribution>() { 100 private int next = 5; 101 102 public boolean hasNext() { 103 return next > 0; 104 } 105 106 @SuppressWarnings( "synthetic-access" ) 107 public Contribution next() { 108 if (next == 5) { 109 next = 4; 110 return contribution1; 111 } 112 if (next == 4) { 113 next = 3; 114 return contribution2; 115 } 116 if (next == 3) { 117 next = 2; 118 return contribution3; 119 } 120 if (next == 2) { 121 next = 1; 122 return contribution4; 123 } 124 if (next == 1) { 125 next = 0; 126 return contribution5; 127 } 128 throw new NoSuchElementException(); 129 } 130 131 public void remove() { 132 throw new UnsupportedOperationException(); 133 } 134 }; 135 } 136 137 /** 138 * {@inheritDoc} 139 * 140 * @see org.jboss.dna.connector.federation.merge.MergePlan#isSource(java.lang.String) 141 */ 142 @Override 143 public boolean isSource( String sourceName ) { 144 if (contribution1.getSourceName().equals(sourceName)) return true; 145 if (contribution2.getSourceName().equals(sourceName)) return true; 146 if (contribution3.getSourceName().equals(sourceName)) return true; 147 if (contribution4.getSourceName().equals(sourceName)) return true; 148 if (contribution5.getSourceName().equals(sourceName)) return true; 149 return false; 150 } 151 152 /** 153 * {@inheritDoc} 154 * 155 * @see java.lang.Object#hashCode() 156 */ 157 @Override 158 public int hashCode() { 159 return HashCode.compute(contribution1, contribution2, contribution3, contribution4, contribution5); 160 } 161 162 }