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Java > Open Source Codes > org > jboss > aspects > versioned > CollectionStateChangeInterceptor


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.aspects.versioned;
23
24 import java.lang.reflect.Method JavaDoc;
25 import java.util.HashMap JavaDoc;
26
27 import org.jboss.aop.joinpoint.MethodInvocation;
28 import org.jboss.aop.util.reference.MethodPersistentReference;
29
30
31
32 /**
33  *
34  * @author <a HREF="mailto:bill@jboss.org">Bill Burke</a>
35  * @version $Revision: 44133 $
36  */
37 public class CollectionStateChangeInterceptor implements org.jboss.aop.advice.Interceptor
38 {
39    protected CollectionStateManager manager;
40
41    public CollectionStateChangeInterceptor(CollectionStateManager manager)
42    {
43       this.manager = manager;
44    }
45
46    public String JavaDoc getName() { return "CollectionChangeInterceptor"; }
47
48
49    /**
50     *
51     */
52    public Object JavaDoc invoke(org.jboss.aop.joinpoint.Invocation invocation) throws Throwable JavaDoc
53    {
54       if (invocation instanceof MethodInvocation)
55       {
56          org.jboss.aop.joinpoint.MethodInvocation methodInvocation = (org.jboss.aop.joinpoint.MethodInvocation)invocation;
57          long methodHash = methodInvocation.getMethodHash();
58          Method JavaDoc managerMethod = manager.isManagerMethod(methodHash);
59          if (managerMethod != null)
60          {
61             Object JavaDoc[] args = methodInvocation.getArguments();
62             return managerMethod.invoke(manager, args);
63          }
64          Object JavaDoc target = methodInvocation.getTargetObject();
65          Method JavaDoc method = methodInvocation.getMethod();
66          if (method == null)
67          {
68             HashMap JavaDoc methodMap = manager.getMethodMap();
69             MethodPersistentReference ref = (MethodPersistentReference)methodMap.get(new Long JavaDoc(methodHash));
70             method = (Method JavaDoc)ref.get();
71          }
72          return method.invoke(target, methodInvocation.getArguments());
73       }
74       return invocation.invokeNext();
75    }
76
77 }
78
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