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Java > Open Source Codes > org > jboss > ejb3 > cache > StatefulReplicationInterceptor


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.cache;
23
24 import org.jboss.aop.advice.Interceptor;
25 import org.jboss.aop.joinpoint.Invocation;
26 import org.jboss.ejb3.stateful.StatefulBeanContext;
27 import org.jboss.ejb3.stateful.StatefulContainer;
28 import org.jboss.ejb3.stateful.StatefulContainerInvocation;
29
30 /**
31  * Replicate SFSB if it is modified
32  *
33  * @author <a HREF="mailto:bill@jboss.org">Bill Burke</a>
34  * @version $Revision: 45045 $
35  */
36 public class StatefulReplicationInterceptor implements Interceptor
37 {
38    public String JavaDoc getName()
39    {
40       return this.getClass().getName();
41    }
42
43    public Object JavaDoc invoke(Invocation invocation) throws Throwable JavaDoc
44    {
45       Object JavaDoc rtn = invocation.invokeNext();
46
47       Object JavaDoc obj = invocation.getTargetObject();
48
49       if (obj instanceof Optimized)
50       {
51          if (!((Optimized) obj).isModified())
52          {
53             return rtn;
54          }
55       }
56       StatefulContainerInvocation ejb = (StatefulContainerInvocation) invocation;
57       StatefulBeanContext ctx = (StatefulBeanContext) ejb.getBeanContext();
58       StatefulContainer container = (StatefulContainer) ejb.getAdvisor();
59       // has not been overriden
60 if (container.getCache() instanceof ClusteredStatefulCache)
61       {
62          ClusteredStatefulCache cache = (ClusteredStatefulCache) container.getCache();
63          cache.replicate(ctx);
64       }
65       
66       return rtn;
67    }
68 }
69
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