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