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 
  26 package com.sun.corba.se.spi.orbutil.proxy ;
  27 
  28 import java.io.Serializable ;
  29 
  30 import java.util.Map ;
  31 import java.util.LinkedHashMap ;
  32 
  33 import java.lang.reflect.Proxy ;
  34 import java.lang.reflect.Method ;
  35 import java.lang.reflect.InvocationHandler ;
  36 import java.lang.reflect.InvocationTargetException ;
  37 import com.sun.corba.se.impl.presentation.rmi.DynamicAccessPermission ;
  38 
  39 public 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 }