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.store.jpa;
025
026 import java.util.UUID;
027 import java.util.concurrent.CopyOnWriteArrayList;
028 import java.util.concurrent.TimeUnit;
029 import javax.persistence.EntityManager;
030 import javax.transaction.xa.XAResource;
031 import org.jboss.dna.graph.ExecutionContext;
032 import org.jboss.dna.graph.cache.CachePolicy;
033 import org.jboss.dna.graph.connector.RepositoryConnection;
034 import org.jboss.dna.graph.connector.RepositorySourceException;
035 import org.jboss.dna.graph.connector.RepositorySourceListener;
036 import org.jboss.dna.graph.request.Request;
037 import org.jboss.dna.graph.request.processor.RequestProcessor;
038
039 /**
040 * @author Randall Hauch
041 */
042 public class JpaConnection implements RepositoryConnection {
043
044 private final String name;
045 private final CachePolicy cachePolicy;
046 private final CopyOnWriteArrayList<RepositorySourceListener> listeners = new CopyOnWriteArrayList<RepositorySourceListener>();
047 private final EntityManager entityManager;
048 private final Model model;
049 private final UUID rootNodeUuid;
050 private final String nameOfDefaultWorkspace;
051 private final String[] predefinedWorkspaceNames;
052 private final boolean creatingWorkspacesAllowed;
053 private final long largeValueMinimumSizeInBytes;
054 private final boolean compressData;
055 private final boolean enforceReferentialIntegrity;
056
057 /*package*/JpaConnection( String sourceName,
058 CachePolicy cachePolicy,
059 EntityManager entityManager,
060 Model model,
061 UUID rootNodeUuid,
062 String nameOfDefaultWorkspace,
063 String[] predefinedWorkspaceNames,
064 long largeValueMinimumSizeInBytes,
065 boolean creatingWorkspacesAllowed,
066 boolean compressData,
067 boolean enforceReferentialIntegrity ) {
068 assert sourceName != null;
069 assert entityManager != null;
070 assert model != null;
071 assert rootNodeUuid != null;
072 this.name = sourceName;
073 this.cachePolicy = cachePolicy; // may be null
074 this.entityManager = entityManager;
075 this.model = model;
076 this.rootNodeUuid = rootNodeUuid;
077 this.largeValueMinimumSizeInBytes = largeValueMinimumSizeInBytes;
078 this.compressData = compressData;
079 this.enforceReferentialIntegrity = enforceReferentialIntegrity;
080 this.nameOfDefaultWorkspace = nameOfDefaultWorkspace;
081 this.predefinedWorkspaceNames = predefinedWorkspaceNames != null ? predefinedWorkspaceNames : new String[] {};
082 this.creatingWorkspacesAllowed = creatingWorkspacesAllowed;
083 }
084
085 /**
086 * {@inheritDoc}
087 *
088 * @see org.jboss.dna.graph.connector.RepositoryConnection#getSourceName()
089 */
090 public String getSourceName() {
091 return name;
092 }
093
094 /**
095 * {@inheritDoc}
096 *
097 * @see org.jboss.dna.graph.connector.RepositoryConnection#setListener(org.jboss.dna.graph.connector.RepositorySourceListener)
098 */
099 public void setListener( RepositorySourceListener listener ) {
100 if (listener != null) {
101 listeners.addIfAbsent(listener);
102 }
103 }
104
105 /**
106 * {@inheritDoc}
107 *
108 * @see org.jboss.dna.graph.connector.RepositoryConnection#getDefaultCachePolicy()
109 */
110 public CachePolicy getDefaultCachePolicy() {
111 return cachePolicy;
112 }
113
114 /**
115 * {@inheritDoc}
116 *
117 * @see org.jboss.dna.graph.connector.RepositoryConnection#getXAResource()
118 */
119 public XAResource getXAResource() {
120 return null;
121 }
122
123 /**
124 * {@inheritDoc}
125 *
126 * @see org.jboss.dna.graph.connector.RepositoryConnection#ping(long, java.util.concurrent.TimeUnit)
127 */
128 public boolean ping( long time,
129 TimeUnit unit ) {
130 return entityManager.isOpen();
131 }
132
133 /**
134 * {@inheritDoc}
135 *
136 * @see org.jboss.dna.graph.connector.RepositoryConnection#execute(org.jboss.dna.graph.ExecutionContext,
137 * org.jboss.dna.graph.request.Request)
138 */
139 public void execute( ExecutionContext context,
140 Request request ) throws RepositorySourceException {
141 long size = largeValueMinimumSizeInBytes;
142 RequestProcessor proc = model.createRequestProcessor(name,
143 context,
144 entityManager,
145 rootNodeUuid,
146 nameOfDefaultWorkspace,
147 predefinedWorkspaceNames,
148 size,
149 creatingWorkspacesAllowed,
150 compressData,
151 enforceReferentialIntegrity);
152 try {
153 proc.process(request);
154 } finally {
155 proc.close();
156 }
157 }
158
159 /**
160 * {@inheritDoc}
161 *
162 * @see org.jboss.dna.graph.connector.RepositoryConnection#close()
163 */
164 public void close() {
165 }
166
167 }