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Java > Open Source Codes > org > jboss > aop > util > reference > MethodPersistentReference


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
23 package org.jboss.aop.util.reference;
24
25 import java.lang.reflect.Method JavaDoc;
26
27 /**
28  * Copied from org.jboss.serial.references;
29  *
30  * A reference to a field.
31  * In case the reference is released, the reference will be reconstructed*/
32 public class MethodPersistentReference extends ArgumentPersistentReference
33 {
34     public MethodPersistentReference (Method JavaDoc method, int referenceType)
35     {
36         super(method!=null?method.getDeclaringClass():null,method,referenceType);
37         if (method!=null)
38         {
39             this.name=method.getName();
40             setArguments(method.getParameterTypes());
41         }
42     }
43     String JavaDoc name;
44     
45
46     public synchronized Object JavaDoc rebuildReference() throws Exception JavaDoc
47     {
48         // A reference to guarantee the value is not being GCed during while the value is being rebuilt
49 Object JavaDoc returnValue=null;
50         if ((returnValue=internalGet())!=null) return returnValue;
51         
52         Method JavaDoc aMethod = getMappedClass().getDeclaredMethod(name,getArguments());
53         aMethod.setAccessible(true);
54         buildReference(aMethod);
55         return aMethod;
56     }
57
58     public Method JavaDoc getMethod()
59     {
60         return (Method JavaDoc) get();
61     }
62     
63 }
64
65
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