DelegateInvocationHandlerImpl.java revision 608:7e06bf1dcb09 
1/*
2 * Copyright (c) 2004, 2006, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation.  Oracle designates this
8 * particular file as subject to the "Classpath" exception as provided
9 * by Oracle in the LICENSE file that accompanied this code.
10 *
11 * This code is distributed in the hope that it will be useful, but WITHOUT
12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
13 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
14 * version 2 for more details (a copy is included in the LICENSE file that
15 * accompanied this code).
16 *
17 * You should have received a copy of the GNU General Public License version
18 * 2 along with this work; if not, write to the Free Software Foundation,
19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
20 *
21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
22 * or visit www.oracle.com if you need additional information or have any
23 * questions.
24 */
25
26package com.sun.corba.se.spi.orbutil.proxy ;
27
28import java.io.Serializable ;
29
30import java.util.Map ;
31import java.util.LinkedHashMap ;
32
33import java.lang.reflect.Proxy ;
34import java.lang.reflect.Method ;
35import java.lang.reflect.InvocationHandler ;
36import java.lang.reflect.InvocationTargetException ;
37import com.sun.corba.se.impl.presentation.rmi.DynamicAccessPermission ;
38
39public abstract class DelegateInvocationHandlerImpl
40{
41    private DelegateInvocationHandlerImpl() {}
42
43    public static InvocationHandler create( final Object delegate )
44    {
45        SecurityManager s = System.getSecurityManager();
46        if (s != null) {
47            s.checkPermission(new DynamicAccessPermission("access"));
48        }
49        return new InvocationHandler() {
50            public Object invoke( Object proxy, Method method, Object[] args )
51                throws Throwable
52            {
53                // This throws an IllegalArgument exception if the delegate
54                // is not assignable from method.getDeclaring class.
55                try {
56                    return method.invoke( delegate, args ) ;
57                } catch (InvocationTargetException ite) {
58                    // Propagate the underlying exception as the
59                    // result of the invocation
60                    throw ite.getCause() ;
61                }
62            }
63        } ;
64    }
65}
66