CompositeInvocationHandlerImpl.java revision 608:7e06bf1dcb09 
1/*
2 * Copyright (c) 2003, 2013, 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
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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 ;
36
37import com.sun.corba.se.spi.logging.CORBALogDomains ;
38import com.sun.corba.se.impl.logging.ORBUtilSystemException ;
39import com.sun.corba.se.impl.presentation.rmi.DynamicAccessPermission;
40
41public class CompositeInvocationHandlerImpl implements
42    CompositeInvocationHandler
43{
44    private Map classToInvocationHandler = new LinkedHashMap() ;
45    private InvocationHandler defaultHandler = null ;
46
47    public void addInvocationHandler( Class interf,
48        InvocationHandler handler )
49    {
50        checkAccess();
51        classToInvocationHandler.put( interf, handler ) ;
52    }
53
54    public void setDefaultHandler( InvocationHandler handler )
55    {
56        checkAccess();
57        defaultHandler = handler ;
58    }
59
60    public Object invoke( Object proxy, Method method, Object[] args )
61        throws Throwable
62    {
63        // Note that the declaring class in method is the interface
64        // in which the method was defined, not the proxy class.
65        Class cls = method.getDeclaringClass() ;
66        InvocationHandler handler =
67            (InvocationHandler)classToInvocationHandler.get( cls ) ;
68
69        if (handler == null) {
70            if (defaultHandler != null)
71                handler = defaultHandler ;
72            else {
73                ORBUtilSystemException wrapper = ORBUtilSystemException.get(
74                    CORBALogDomains.UTIL ) ;
75                throw wrapper.noInvocationHandler( "\"" + method.toString() +
76                    "\"" ) ;
77            }
78        }
79
80        // handler should never be null here.
81
82        return handler.invoke( proxy, method, args ) ;
83    }
84
85    private static final DynamicAccessPermission perm = new DynamicAccessPermission("access");
86    private void checkAccess() {
87        final SecurityManager sm = System.getSecurityManager();
88        if (sm != null) {
89            sm.checkPermission(perm);
90}
91    }
92
93    private static final long serialVersionUID = 4571178305984833743L;
94}
95