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Java > Open Source Codes > org > jboss > injection > ExtendedPersistenceContextInjector


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.injection;
23
24 import javax.persistence.EntityManager;
25 import org.jboss.ejb3.BeanContext;
26 import org.jboss.ejb3.entity.ManagedEntityManagerFactory;
27 import org.jboss.ejb3.stateful.StatefulBeanContext;
28 import org.jboss.logging.Logger;
29
30 /**
31  * Comment
32  *
33  * @author <a HREF="mailto:bill@jboss.org">Bill Burke</a>
34  * @version $Revision: 46510 $
35  */
36 public class ExtendedPersistenceContextInjector implements Injector, PojoInjector
37 {
38    protected static final Logger log = Logger.getLogger(ExtendedPersistenceContextInjector.class);
39    protected ManagedEntityManagerFactory factory;
40
41    protected ExtendedPersistenceContextInjector(ManagedEntityManagerFactory factory)
42    {
43       this.factory = factory;
44    }
45
46    public void inject(BeanContext ctx)
47    {
48       inject(ctx, ctx.getInstance());
49    }
50
51    public void inject(BeanContext beanContext, Object JavaDoc instance)
52    {
53       StatefulBeanContext ctx = (StatefulBeanContext)beanContext;
54       EntityManager pc = ctx.getExtendedPersistenceContext(factory.getKernelName());
55       if (pc == null)
56       {
57          pc = factory.createEntityManager();
58          ctx.addExtendedPersistenceContext(factory.getKernelName(), pc);
59       }
60    }
61
62    public void inject(Object JavaDoc instance)
63    {
64       throw new RuntimeException JavaDoc("Illegal operation");
65    }
66
67    public Class JavaDoc getInjectionClass()
68    {
69       return null;
70    }
71
72 }
73
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