01: /*
02: * JBoss, Home of Professional Open Source.
03: * Copyright 2006, Red Hat Middleware LLC, and individual contributors
04: * as indicated by the @author tags. See the copyright.txt file in the
05: * distribution for a full listing of individual contributors.
06: *
07: * This is free software; you can redistribute it and/or modify it
08: * under the terms of the GNU Lesser General Public License as
09: * 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;
25: import java.util.HashMap;
26:
27: import org.jboss.aop.joinpoint.MethodInvocation;
28: import org.jboss.aop.util.reference.MethodPersistentReference;
29:
30: /**
31: *
32: * @author <a href="mailto:bill@jboss.org">Bill Burke</a>
33: * @version $Revision: 57186 $
34: */
35: public class CollectionStateChangeInterceptor implements
36: org.jboss.aop.advice.Interceptor {
37: protected CollectionStateManager manager;
38:
39: public CollectionStateChangeInterceptor(
40: CollectionStateManager manager) {
41: this .manager = manager;
42: }
43:
44: public String getName() {
45: return "CollectionChangeInterceptor";
46: }
47:
48: /**
49: *
50: */
51: public Object invoke(org.jboss.aop.joinpoint.Invocation invocation)
52: throws Throwable {
53: if (invocation instanceof MethodInvocation) {
54: org.jboss.aop.joinpoint.MethodInvocation methodInvocation = (org.jboss.aop.joinpoint.MethodInvocation) invocation;
55: long methodHash = methodInvocation.getMethodHash();
56: Method managerMethod = manager.isManagerMethod(methodHash);
57: if (managerMethod != null) {
58: Object[] args = methodInvocation.getArguments();
59: return managerMethod.invoke(manager, args);
60: }
61: Object target = methodInvocation.getTargetObject();
62: Method method = methodInvocation.getMethod();
63: if (method == null) {
64: HashMap methodMap = manager.getMethodMap();
65: MethodPersistentReference ref = (MethodPersistentReference) methodMap
66: .get(new Long(methodHash));
67: method = (Method) ref.get();
68: }
69: return method.invoke(target, methodInvocation
70: .getArguments());
71: }
72: return invocation.invokeNext();
73: }
74:
75: }
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