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Java > Open Source Codes > org > jboss > ejb3 > PersistenceUnitRegistry


1 /*
2   * JBoss, Home of Professional Open Source
3   * Copyright 2005, JBoss Inc., and individual contributors as indicated
4   * by the @authors tag. See the copyright.txt in the distribution for a
5   * full listing of individual contributors.
6   *
7   * This is free software; you can redistribute it and/or modify it
8   * under the terms of the GNU Lesser General Public License as
9   * published by the Free Software Foundation; either version 2.1 of
10   * the License, or (at your option) any later version.
11   *
12   * This software is distributed in the hope that it will be useful,
13   * but WITHOUT ANY WARRANTY; without even the implied warranty of
14   * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15   * Lesser General Public License for more details.
16   *
17   * You should have received a copy of the GNU Lesser General Public
18   * License along with this software; if not, write to the Free
19   * Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
20   * 02110-1301 USA, or see the FSF site: http://www.fsf.org.
21   */
22 package org.jboss.ejb3;
23
24 import java.util.concurrent.ConcurrentHashMap JavaDoc;
25 import java.util.Collection JavaDoc;
26 import org.jboss.logging.Logger;
27 import org.jboss.ejb3.entity.PersistenceUnitDeployment;
28
29 /**
30  * @author <a HREF="mailto:bdecoste@jboss.com">William DeCoste</a>
31  * @version <tt>$Revision: 39709 $</tt>
32  */
33 public class PersistenceUnitRegistry
34 {
35    private static final Logger log = Logger.getLogger(PersistenceUnitRegistry.class);
36
37    private static ConcurrentHashMap JavaDoc<String JavaDoc, PersistenceUnitDeployment> persistenceUnits = new ConcurrentHashMap JavaDoc<String JavaDoc, PersistenceUnitDeployment>();
38
39    public static void register(PersistenceUnitDeployment container)
40    {
41       if (persistenceUnits.contains(container.getKernelName())) throw new RuntimeException JavaDoc("Persistence Unit is already registered: " + container.getKernelName());
42       persistenceUnits.put(container.getKernelName(), container);
43    }
44
45    public static void unregister(PersistenceUnitDeployment container)
46    {
47       persistenceUnits.remove(container.getKernelName());
48    }
49
50    public static PersistenceUnitDeployment getPersistenceUnit(String JavaDoc kernelName)
51    {
52       return persistenceUnits.get(kernelName);
53    }
54
55    public static Collection JavaDoc<PersistenceUnitDeployment> getPersistenceUnits()
56    {
57       return persistenceUnits.values();
58    }
59
60 }
61
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