1 /*
2 * ModeShape (http://www.modeshape.org)
3 * See the COPYRIGHT.txt file distributed with this work for information
4 * regarding copyright ownership. Some portions may be licensed
5 * to Red Hat, Inc. under one or more contributor license agreements.
6 * See the AUTHORS.txt file in the distribution for a full listing of
7 * individual contributors.
8 *
9 * ModeShape is free software. Unless otherwise indicated, all code in ModeShape
10 * is licensed to you under the terms of the GNU Lesser General Public License as
11 * published by the Free Software Foundation; either version 2.1 of
12 * the License, or (at your option) any later version.
13 *
14 * ModeShape is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
17 * Lesser General Public License for more details.
18 *
19 * You should have received a copy of the GNU Lesser General Public
20 * License along with this software; if not, write to the Free
21 * Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
22 * 02110-1301 USA, or see the FSF site: http://www.fsf.org.
23 */
24 package org.modeshape.connector.jbosscache;
25
26 import java.util.Collections;
27 import java.util.HashSet;
28 import java.util.Set;
29 import java.util.UUID;
30 import java.util.concurrent.locks.Lock;
31 import java.util.concurrent.locks.ReadWriteLock;
32 import java.util.concurrent.locks.ReentrantReadWriteLock;
33 import net.jcip.annotations.ThreadSafe;
34 import org.jboss.cache.Cache;
35 import org.modeshape.graph.ExecutionContext;
36 import org.modeshape.graph.connector.base.Repository;
37
38 /**
39 * The representation of an in-memory repository and its content.
40 */
41 @ThreadSafe
42 public class JBossCacheRepository extends Repository<JBossCacheNode, JBossCacheWorkspace> {
43
44 private final Cache<UUID, JBossCacheNode> cache;
45 private final ReadWriteLock lock = new ReentrantReadWriteLock();
46 private final Set<String> predefinedWorkspaceNames;
47
48 public JBossCacheRepository( JBossCacheSource source,
49 Cache<UUID, JBossCacheNode> cache ) {
50 super(source);
51 this.cache = cache;
52 assert this.cache != null;
53 Set<String> workspaceNames = new HashSet<String>();
54 for (String workspaceName : source.getPredefinedWorkspaceNames()) {
55 workspaceNames.add(workspaceName);
56 }
57 this.predefinedWorkspaceNames = Collections.unmodifiableSet(workspaceNames);
58 initialize();
59 }
60
61 /**
62 * {@inheritDoc}
63 *
64 * @see org.modeshape.graph.connector.base.Repository#getWorkspaceNames()
65 */
66 @Override
67 public Set<String> getWorkspaceNames() {
68 Set<String> names = new HashSet<String>(super.getWorkspaceNames());
69 names.addAll(predefinedWorkspaceNames);
70 return Collections.unmodifiableSet(names);
71 }
72
73 /**
74 * @return cache
75 */
76 public Cache<UUID, JBossCacheNode> getCache() {
77 return cache;
78 }
79
80 /**
81 * This method shuts down the workspace and makes it no longer usable. This method should also only be called once.
82 */
83 public void shutdown() {
84 }
85
86 /**
87 * {@inheritDoc}
88 *
89 * @see org.modeshape.graph.connector.base.Repository#startTransaction(org.modeshape.graph.ExecutionContext, boolean)
90 */
91 @Override
92 public JBossCacheTransaction startTransaction( ExecutionContext context,
93 boolean readonly ) {
94 final Lock lock = readonly ? this.lock.readLock() : this.lock.writeLock();
95 lock.lock();
96 return new JBossCacheTransaction(context, this, getRootNodeUuid(), lock);
97 }
98 }