1 /*
2 * Copyright (c) 1997, 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
22 * or visit www.oracle.com if you need additional information or have any
23 * questions.
24 */
25
26 package com.sun.corba.se.impl.oa.poa;
27
28 import java.util.*;
29 import org.omg.CORBA.CompletionStatus;
30 import org.omg.PortableServer.CurrentPackage.NoContext;
31 import org.omg.PortableServer.POA;
32 import org.omg.PortableServer.Servant;
33 import org.omg.PortableServer.ServantLocatorPackage.CookieHolder;
34
35 import com.sun.corba.se.spi.oa.OAInvocationInfo ;
36 import com.sun.corba.se.spi.oa.ObjectAdapter ;
37
38 import com.sun.corba.se.spi.orb.ORB ;
39
40 import com.sun.corba.se.spi.logging.CORBALogDomains ;
41
42 import com.sun.corba.se.impl.logging.POASystemException ;
43
44 // XXX Needs to be turned into LocalObjectImpl.
45
46 public class POACurrent extends org.omg.CORBA.portable.ObjectImpl
47 implements org.omg.PortableServer.Current
48 {
49 private ORB orb;
50 private POASystemException wrapper ;
51
52 public POACurrent(ORB orb)
53 {
54 this.orb = orb;
55 wrapper = POASystemException.get( orb,
56 CORBALogDomains.OA_INVOCATION ) ;
57 }
58
59 public String[] _ids()
60 {
61 String[] ids = new String[1];
62 ids[0] = "IDL:omg.org/PortableServer/Current:1.0";
63 return ids;
64 }
65
66 //
67 // Standard OMG operations.
68 //
69
70 public POA get_POA()
71 throws
72 NoContext
73 {
74 POA poa = (POA)(peekThrowNoContext().oa());
75 throwNoContextIfNull(poa);
76 return poa;
77 }
78
79 public byte[] get_object_id()
80 throws
81 NoContext
82 {
83 byte[] objectid = peekThrowNoContext().id();
84 throwNoContextIfNull(objectid);
85 return objectid;
86 }
87
88 //
89 // Implementation operations used by POA package.
90 //
91
92 public ObjectAdapter getOA()
93 {
94 ObjectAdapter oa = peekThrowInternal().oa();
95 throwInternalIfNull(oa);
96 return oa;
97 }
98
99 public byte[] getObjectId()
100 {
101 byte[] objectid = peekThrowInternal().id();
102 throwInternalIfNull(objectid);
103 return objectid;
104 }
105
106 Servant getServant()
107 {
108 Servant servant = (Servant)(peekThrowInternal().getServantContainer());
109 // If is OK for the servant to be null.
110 // This could happen if POAImpl.getServant is called but
111 // POAImpl.internalGetServant throws an exception.
112 return servant;
113 }
114
115 CookieHolder getCookieHolder()
116 {
117 CookieHolder cookieHolder = peekThrowInternal().getCookieHolder();
118 throwInternalIfNull(cookieHolder);
119 return cookieHolder;
120 }
121
122 // This is public so we can test the stack balance.
123 // It is not a security hole since this same info can be obtained from
124 // PortableInterceptors.
125 public String getOperation()
126 {
127 String operation = peekThrowInternal().getOperation();
128 throwInternalIfNull(operation);
129 return operation;
130 }
131
132 void setServant(Servant servant)
133 {
134 peekThrowInternal().setServant( servant );
135 }
136
137 //
138 // Class utilities.
139 //
140
141 private OAInvocationInfo peekThrowNoContext()
142 throws
143 NoContext
144 {
145 OAInvocationInfo invocationInfo = null;
146 try {
147 invocationInfo = orb.peekInvocationInfo() ;
148 } catch (EmptyStackException e) {
149 throw new NoContext();
150 }
151 return invocationInfo;
152 }
153
154 private OAInvocationInfo peekThrowInternal()
155 {
156 OAInvocationInfo invocationInfo = null;
157 try {
158 invocationInfo = orb.peekInvocationInfo() ;
159 } catch (EmptyStackException e) {
160 // The completion status is maybe because this could happen
161 // after the servant has been invoked.
162 throw wrapper.poacurrentUnbalancedStack( e ) ;
163 }
164 return invocationInfo;
165 }
166
167 private void throwNoContextIfNull(Object o)
168 throws
169 NoContext
170 {
171 if ( o == null ) {
172 throw new NoContext();
173 }
174 }
175
176 private void throwInternalIfNull(Object o)
177 {
178 if ( o == null ) {
179 throw wrapper.poacurrentNullField( CompletionStatus.COMPLETED_MAYBE ) ;
180 }
181 }
182 }