SpecialMethod.java revision 608:7e06bf1dcb09 
1/*
2 * Copyright (c) 1998, 2003, 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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23 * questions.
24 */
25
26package com.sun.corba.se.impl.protocol ;
27
28import javax.rmi.CORBA.Tie;
29
30import org.omg.CORBA.SystemException ;
31import org.omg.CORBA.NO_IMPLEMENT ;
32import org.omg.CORBA.OBJECT_NOT_EXIST ;
33import org.omg.CORBA.CompletionStatus ;
34import org.omg.CORBA.portable.InputStream;
35import org.omg.CORBA.portable.OutputStream;
36
37import com.sun.corba.se.spi.oa.ObjectAdapter;
38import com.sun.corba.se.spi.orb.ORB;
39
40import com.sun.corba.se.spi.protocol.CorbaMessageMediator;
41
42import com.sun.corba.se.spi.logging.CORBALogDomains;
43
44import com.sun.corba.se.impl.logging.ORBUtilSystemException;
45
46import com.sun.corba.se.spi.oa.NullServant ;
47
48public abstract class SpecialMethod {
49    public abstract boolean isNonExistentMethod() ;
50    public abstract String getName();
51    public abstract CorbaMessageMediator invoke(java.lang.Object servant,
52                                                CorbaMessageMediator request,
53                                                byte[] objectId,
54                                                ObjectAdapter objectAdapter);
55
56    public static final SpecialMethod getSpecialMethod(String operation) {
57        for(int i = 0; i < methods.length; i++)
58            if (methods[i].getName().equals(operation))
59                return methods[i];
60        return null;
61    }
62
63    static SpecialMethod[] methods = {
64        new IsA(),
65        new GetInterface(),
66        new NonExistent(),
67        new NotExistent()
68    };
69}
70
71class NonExistent extends SpecialMethod {
72    public boolean isNonExistentMethod()
73    {
74        return true ;
75    }
76
77    public String getName() {           // _non_existent
78        return "_non_existent";
79    }
80
81    public CorbaMessageMediator invoke(java.lang.Object servant,
82                                       CorbaMessageMediator request,
83                                       byte[] objectId,
84                                       ObjectAdapter objectAdapter)
85    {
86        boolean result = (servant == null) || (servant instanceof NullServant) ;
87        CorbaMessageMediator response =
88            request.getProtocolHandler().createResponse(request, null);
89        ((OutputStream)response.getOutputObject()).write_boolean(result);
90        return response;
91    }
92}
93
94class NotExistent extends NonExistent {
95    public String getName() {           // _not_existent
96        return "_not_existent";
97    }
98}
99
100class IsA extends SpecialMethod  {      // _is_a
101    public boolean isNonExistentMethod()
102    {
103        return false ;
104    }
105
106    public String getName() {
107        return "_is_a";
108    }
109    public CorbaMessageMediator invoke(java.lang.Object servant,
110                                       CorbaMessageMediator request,
111                                       byte[] objectId,
112                                       ObjectAdapter objectAdapter)
113    {
114        if ((servant == null) || (servant instanceof NullServant)) {
115            ORB orb = (ORB)request.getBroker() ;
116            ORBUtilSystemException wrapper = ORBUtilSystemException.get( orb,
117                CORBALogDomains.OA_INVOCATION ) ;
118
119            return request.getProtocolHandler().createSystemExceptionResponse(
120                request, wrapper.badSkeleton(), null);
121        }
122
123        String[] ids = objectAdapter.getInterfaces( servant, objectId );
124        String clientId =
125            ((InputStream)request.getInputObject()).read_string();
126        boolean answer = false;
127        for(int i = 0; i < ids.length; i++)
128            if (ids[i].equals(clientId)) {
129                answer = true;
130                break;
131            }
132
133        CorbaMessageMediator response =
134            request.getProtocolHandler().createResponse(request, null);
135        ((OutputStream)response.getOutputObject()).write_boolean(answer);
136        return response;
137    }
138}
139
140class GetInterface extends SpecialMethod  {     // _get_interface
141    public boolean isNonExistentMethod()
142    {
143        return false ;
144    }
145
146    public String getName() {
147        return "_interface";
148    }
149    public CorbaMessageMediator invoke(java.lang.Object servant,
150                                       CorbaMessageMediator request,
151                                       byte[] objectId,
152                                       ObjectAdapter objectAdapter)
153    {
154        ORB orb = (ORB)request.getBroker() ;
155        ORBUtilSystemException wrapper = ORBUtilSystemException.get( orb,
156            CORBALogDomains.OA_INVOCATION ) ;
157
158        if ((servant == null) || (servant instanceof NullServant)) {
159            return request.getProtocolHandler().createSystemExceptionResponse(
160                request, wrapper.badSkeleton(), null);
161        } else {
162            return request.getProtocolHandler().createSystemExceptionResponse(
163                request, wrapper.getinterfaceNotImplemented(), null);
164        }
165    }
166}
167
168// End of file.
169