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.UUID;
27 import org.jboss.cache.Cache;
28 import org.jboss.cache.Fqn;
29 import org.jboss.cache.Node;
30 import org.modeshape.graph.connector.base.MapWorkspace;
31
32 /**
33 *
34 */
35 public class JBossCacheWorkspace extends MapWorkspace<JBossCacheNode> {
36
37 protected static Node<UUID, JBossCacheNode> findOrCreateWorkspaceRoot( String workspaceName,
38 Cache<UUID, JBossCacheNode> workspaceCache,
39 UUID rootNodeUuid ) {
40 assert workspaceName != null;
41 assert workspaceCache != null;
42 assert rootNodeUuid != null;
43
44 // Make sure the cache has a node for the workspace ...
45 Node<UUID, JBossCacheNode> workspace = workspaceCache.getRoot().getChild(Fqn.fromElements(workspaceName));
46 if (workspace == null) {
47 workspace = workspaceCache.getRoot().addChild(Fqn.fromElements(workspaceName));
48 }
49 // Make sure there is a root node ...
50 JBossCacheNode rootNode = workspace.get(rootNodeUuid);
51 if (rootNode == null) {
52 rootNode = new JBossCacheNode(rootNodeUuid);
53 workspace.put(rootNodeUuid, rootNode);
54 }
55 return workspace;
56 }
57
58 private Cache<UUID, JBossCacheNode> workspaceCache;
59 private Node<UUID, JBossCacheNode> workspaceNode;
60
61 /**
62 * Create a new workspace instance.
63 *
64 * @param name the name of the workspace
65 * @param workspaceCache the Infinispan cache containing the workspace content
66 * @param rootNode the root node for the workspace
67 */
68 public JBossCacheWorkspace( String name,
69 Cache<UUID, JBossCacheNode> workspaceCache,
70 JBossCacheNode rootNode ) {
71 super(name, rootNode);
72 this.workspaceCache = workspaceCache;
73 this.workspaceNode = findOrCreateWorkspaceRoot(this.name, this.workspaceCache, this.rootNodeUuid);
74 }
75
76 /**
77 * Create a new workspace instance.
78 *
79 * @param name the name of the workspace
80 * @param workspaceCache the Infinispan cache containing the workspace content
81 * @param originalToClone the workspace that is to be cloned
82 */
83 public JBossCacheWorkspace( String name,
84 Cache<UUID, JBossCacheNode> workspaceCache,
85 JBossCacheWorkspace originalToClone ) {
86 super(name, originalToClone);
87 this.workspaceCache = workspaceCache;
88 this.workspaceNode = findOrCreateWorkspaceRoot(this.name, this.workspaceCache, this.rootNodeUuid);
89 }
90
91 /**
92 * {@inheritDoc}
93 *
94 * @see org.modeshape.graph.connector.base.MapWorkspace#getNode(java.util.UUID)
95 */
96 @Override
97 public JBossCacheNode getNode( UUID uuid ) {
98 assert uuid != null;
99 return workspaceNode.get(uuid);
100 }
101
102 /**
103 * {@inheritDoc}
104 *
105 * @see org.modeshape.graph.connector.base.MapWorkspace#putNode(org.modeshape.graph.connector.base.MapNode)
106 */
107 @Override
108 public JBossCacheNode putNode( JBossCacheNode node ) {
109 assert node != null;
110 JBossCacheNode result = workspaceNode.put(node.getUuid(), node);
111 workspaceNode = findOrCreateWorkspaceRoot(this.name, this.workspaceCache, this.rootNodeUuid);
112 return result;
113 }
114
115 /**
116 * {@inheritDoc}
117 *
118 * @see org.modeshape.graph.connector.base.MapWorkspace#removeNode(java.util.UUID)
119 */
120 @Override
121 public JBossCacheNode removeNode( UUID uuid ) {
122 assert uuid != null;
123 JBossCacheNode result = workspaceNode.remove(uuid);
124 workspaceNode = findOrCreateWorkspaceRoot(this.name, this.workspaceCache, this.rootNodeUuid);
125 return result;
126 }
127
128 /**
129 * {@inheritDoc}
130 *
131 * @see org.modeshape.graph.connector.base.MapWorkspace#removeAll()
132 */
133 @Override
134 public void removeAll() {
135 workspaceNode.clearData();
136 workspaceNode = findOrCreateWorkspaceRoot(this.name, this.workspaceCache, this.rootNodeUuid);
137 }
138
139 /**
140 * This method shuts down the workspace and makes it no longer usable. This method should also only be called once.
141 */
142 public void shutdown() {
143 this.workspaceCache.stop();
144 }
145
146 }