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.merge;
025
026 import java.util.Iterator;
027 import java.util.NoSuchElementException;
028 import net.jcip.annotations.ThreadSafe;
029 import org.jboss.dna.common.util.HashCode;
030 import org.jboss.dna.connector.federation.contribution.Contribution;
031
032 /**
033 * @author Randall Hauch
034 */
035 @ThreadSafe
036 public class FiveContributionMergePlan extends MergePlan {
037
038 private static final long serialVersionUID = 1L;
039 private final Contribution contribution1;
040 private final Contribution contribution2;
041 private final Contribution contribution3;
042 private final Contribution contribution4;
043 private final Contribution contribution5;
044
045 /**
046 * @param contribution1 the first contribution for this merge plan
047 * @param contribution2 the second contribution for this merge plan
048 * @param contribution3 the third contribution for this merge plan
049 * @param contribution4 the fourth contribution for this merge plan
050 * @param contribution5 the fifth contribution for this merge plan
051 */
052 /*package*/FiveContributionMergePlan( Contribution contribution1,
053 Contribution contribution2,
054 Contribution contribution3,
055 Contribution contribution4,
056 Contribution contribution5 ) {
057 assert contribution1 != null;
058 assert contribution2 != null;
059 assert contribution3 != null;
060 assert contribution4 != null;
061 assert contribution5 != null;
062 this.contribution1 = contribution1;
063 this.contribution2 = contribution2;
064 this.contribution3 = contribution3;
065 this.contribution4 = contribution4;
066 this.contribution5 = contribution5;
067 assert checkEachContributionIsFromDistinctSource();
068 }
069
070 /**
071 * {@inheritDoc}
072 *
073 * @see org.jboss.dna.connector.federation.merge.MergePlan#getContributionCount()
074 */
075 @Override
076 public int getContributionCount() {
077 return 5;
078 }
079
080 /**
081 * {@inheritDoc}
082 *
083 * @see org.jboss.dna.connector.federation.merge.MergePlan#getContributionFrom(java.lang.String)
084 */
085 @Override
086 public Contribution getContributionFrom( String sourceName ) {
087 if (contribution1.getSourceName().equals(sourceName)) return contribution1;
088 if (contribution2.getSourceName().equals(sourceName)) return contribution2;
089 if (contribution3.getSourceName().equals(sourceName)) return contribution3;
090 if (contribution4.getSourceName().equals(sourceName)) return contribution4;
091 if (contribution5.getSourceName().equals(sourceName)) return contribution5;
092 return null;
093 }
094
095 /**
096 * {@inheritDoc}
097 *
098 * @see java.lang.Iterable#iterator()
099 */
100 public Iterator<Contribution> iterator() {
101 return new Iterator<Contribution>() {
102 private int next = 5;
103
104 public boolean hasNext() {
105 return next > 0;
106 }
107
108 @SuppressWarnings( "synthetic-access" )
109 public Contribution next() {
110 if (next == 5) {
111 next = 4;
112 return contribution1;
113 }
114 if (next == 4) {
115 next = 3;
116 return contribution2;
117 }
118 if (next == 3) {
119 next = 2;
120 return contribution3;
121 }
122 if (next == 2) {
123 next = 1;
124 return contribution4;
125 }
126 if (next == 1) {
127 next = 0;
128 return contribution5;
129 }
130 throw new NoSuchElementException();
131 }
132
133 public void remove() {
134 throw new UnsupportedOperationException();
135 }
136 };
137 }
138
139 /**
140 * {@inheritDoc}
141 *
142 * @see org.jboss.dna.connector.federation.merge.MergePlan#isSource(java.lang.String)
143 */
144 @Override
145 public boolean isSource( String sourceName ) {
146 if (contribution1.getSourceName().equals(sourceName)) return true;
147 if (contribution2.getSourceName().equals(sourceName)) return true;
148 if (contribution3.getSourceName().equals(sourceName)) return true;
149 if (contribution4.getSourceName().equals(sourceName)) return true;
150 if (contribution5.getSourceName().equals(sourceName)) return true;
151 return false;
152 }
153
154 /**
155 * {@inheritDoc}
156 *
157 * @see java.lang.Object#hashCode()
158 */
159 @Override
160 public int hashCode() {
161 return HashCode.compute(contribution1, contribution2, contribution3, contribution4, contribution5);
162 }
163
164 }