KickJava   Java API By Example, From Geeks To Geeks.

Java > Open Source Codes > com > sun > enterprise > admin > util > proxy > ProxyFactory


1 /*
2  * The contents of this file are subject to the terms
3  * of the Common Development and Distribution License
4  * (the License). You may not use this file except in
5  * compliance with the License.
6  *
7  * You can obtain a copy of the license at
8  * https://glassfish.dev.java.net/public/CDDLv1.0.html or
9  * glassfish/bootstrap/legal/CDDLv1.0.txt.
10  * See the License for the specific language governing
11  * permissions and limitations under the License.
12  *
13  * When distributing Covered Code, include this CDDL
14  * Header Notice in each file and include the License file
15  * at glassfish/bootstrap/legal/CDDLv1.0.txt.
16  * If applicable, add the following below the CDDL Header,
17  * with the fields enclosed by brackets [] replaced by
18  * you own identifying information:
19  * "Portions Copyrighted [year] [name of copyright owner]"
20  *
21  * Copyright 2006 Sun Microsystems, Inc. All rights reserved.
22  */
23
24 /*
25  * Copyright 2004-2005 Sun Microsystems, Inc. All rights reserved.
26  * Use is subject to license terms.
27  */
28
29 package com.sun.enterprise.admin.util.proxy;
30
31 import java.lang.reflect.Proxy JavaDoc;
32
33 /**
34  *
35  */
36 public class ProxyFactory {
37     
38     /** Creates a new instance of ProxyFactory */
39     private ProxyFactory() {
40     }
41
42     public static Object JavaDoc createProxy(Class JavaDoc intfc, Object JavaDoc handler,
43             Interceptor interceptor) {
44         if (!intfc.isInterface()) {
45             throw new IllegalArgumentException JavaDoc(intfc.getClass()
46                     + " is not an interface");
47         }
48         if (!isImplementing(intfc, handler)) {
49             throw new IllegalArgumentException JavaDoc("Handler object " + handler
50                     + " is not an instance of " + intfc.getName());
51         }
52         Object JavaDoc obj = Proxy.newProxyInstance(
53                 handler.getClass().getClassLoader(),
54                 new Class JavaDoc[] {intfc},
55                 new ProxyClass(handler, interceptor));
56         return obj;
57     }
58
59     private static boolean isImplementing(Class JavaDoc intfc, Object JavaDoc obj) {
60         return intfc.isInstance(obj);
61     }
62 }
63
Popular Tags