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.List;
028 import java.util.concurrent.CopyOnWriteArrayList;
029 import net.jcip.annotations.ThreadSafe;
030 import org.jboss.dna.connector.federation.contribution.Contribution;
031
032 /**
033 * @author Randall Hauch
034 */
035 @ThreadSafe
036 public class MultipleContributionMergePlan extends MergePlan {
037
038 private static final long serialVersionUID = 1L;
039 private final List<Contribution> contributions = new CopyOnWriteArrayList<Contribution>();
040
041 /**
042 * @param contributions the contributions for this merge plan
043 */
044 /*package*/MultipleContributionMergePlan( Contribution... contributions ) {
045 assert contributions != null;
046 for (int i = 0; i != contributions.length; ++i) {
047 assert contributions[i] != null;
048 this.contributions.add(contributions[i]);
049 }
050 assert checkEachContributionIsFromDistinctSource();
051 }
052
053 /**
054 * @param contributions the contributions for this merge plan
055 */
056 /*package*/MultipleContributionMergePlan( Iterable<Contribution> contributions ) {
057 assert contributions != null;
058 for (Contribution contribution : contributions) {
059 assert contribution != null;
060 this.contributions.add(contribution);
061 }
062 assert checkEachContributionIsFromDistinctSource();
063 }
064
065 /**
066 * @param contributions the contributions for this merge plan
067 */
068 /*package*/MultipleContributionMergePlan( Iterator<Contribution> contributions ) {
069 assert contributions != null;
070 while (contributions.hasNext()) {
071 Contribution contribution = contributions.next();
072 assert contribution != null;
073 this.contributions.add(contribution);
074 }
075 assert checkEachContributionIsFromDistinctSource();
076 }
077
078 /**
079 * {@inheritDoc}
080 *
081 * @see org.jboss.dna.connector.federation.merge.MergePlan#getContributionCount()
082 */
083 @Override
084 public int getContributionCount() {
085 return contributions.size();
086 }
087
088 /**
089 * {@inheritDoc}
090 *
091 * @see org.jboss.dna.connector.federation.merge.MergePlan#getContributionFrom(java.lang.String)
092 */
093 @Override
094 public Contribution getContributionFrom( String sourceName ) {
095 for (Contribution contribution : contributions) {
096 if (contribution.getSourceName().equals(sourceName)) return contribution;
097 }
098 return null;
099 }
100
101 /**
102 * {@inheritDoc}
103 *
104 * @see java.lang.Iterable#iterator()
105 */
106 public Iterator<Contribution> iterator() {
107 final Iterator<Contribution> iterator = this.contributions.iterator();
108 return new Iterator<Contribution>() {
109 public boolean hasNext() {
110 return iterator.hasNext();
111 }
112
113 public Contribution next() {
114 return iterator.next();
115 }
116
117 public void remove() {
118 throw new UnsupportedOperationException();
119 }
120 };
121 }
122
123 /**
124 * {@inheritDoc}
125 *
126 * @see org.jboss.dna.connector.federation.merge.MergePlan#isSource(java.lang.String)
127 */
128 @Override
129 public boolean isSource( String sourceName ) {
130 for (Contribution contribution : contributions) {
131 if (contribution.getSourceName().equals(sourceName)) return true;
132 }
133 return false;
134 }
135
136 /**
137 * @param contribution
138 */
139 public void addContribution( Contribution contribution ) {
140 this.contributions.add(contribution);
141 }
142
143 /**
144 * {@inheritDoc}
145 *
146 * @see java.lang.Object#hashCode()
147 */
148 @Override
149 public int hashCode() {
150 return contributions.hashCode();
151 }
152
153 }