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Java > Open Source Codes > org > codehaus > groovy > runtime > ReflectionMetaMethod


1 /*
2  * $Id: ReflectionMetaMethod.java,v 1.4 2004/08/27 15:48:08 goetze Exp $
3  *
4  * Copyright 2003 (C) James Strachan and Bob Mcwhirter. All Rights Reserved.
5  *
6  * Redistribution and use of this software and associated documentation
7  * ("Software"), with or without modification, are permitted provided that the
8  * following conditions are met:
9  * 1. Redistributions of source code must retain copyright statements and
10  * notices. Redistributions must also contain a copy of this document.
11  * 2. Redistributions in binary form must reproduce the above copyright
12  * notice, this list of conditions and the following disclaimer in the
13  * documentation and/or other materials provided with the distribution.
14  * 3. The name "groovy" must not be used to endorse or promote products
15  * derived from this Software without prior written permission of The Codehaus.
16  * For written permission, please contact info@codehaus.org.
17  * 4. Products derived from this Software may not be called "groovy" nor may
18  * "groovy" appear in their names without prior written permission of The
19  * Codehaus. "groovy" is a registered trademark of The Codehaus.
20  * 5. Due credit should be given to The Codehaus - http://groovy.codehaus.org/
21  *
22  * THIS SOFTWARE IS PROVIDED BY THE CODEHAUS AND CONTRIBUTORS ``AS IS'' AND ANY
23  * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
24  * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
25  * DISCLAIMED. IN NO EVENT SHALL THE CODEHAUS OR ITS CONTRIBUTORS BE LIABLE FOR
26  * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
27  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
28  * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
29  * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
30  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
31  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
32  * DAMAGE.
33  *
34  */
35 package org.codehaus.groovy.runtime;
36
37 import groovy.lang.MetaMethod;
38
39 import java.lang.reflect.Method JavaDoc;
40 import java.security.AccessController JavaDoc;
41 import java.security.PrivilegedAction JavaDoc;
42
43 public class ReflectionMetaMethod extends MetaMethod {
44     private Method method;
45     boolean alreadySetAccessible;
46
47     public ReflectionMetaMethod(Method method) {
48         super(method);
49         this.method = method;
50     }
51
52     public Object JavaDoc invoke(Object JavaDoc object, Object JavaDoc[] arguments) throws Exception JavaDoc {
53         if ( !alreadySetAccessible ) {
54             AccessController.doPrivileged(new PrivilegedAction JavaDoc() {
55                 public Object JavaDoc run() {
56                     method.setAccessible(true);
57                     return null;
58                 }
59             });
60             alreadySetAccessible = true;
61         }
62
63         // System.out.println("About to invoke method: " + method);
64 // System.out.println("Object: " + object);
65 // System.out.println("Using arguments: " + InvokerHelper.toString(arguments));
66
67         return method.invoke(object, arguments);
68     }
69 }
70
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