LocateRequestMessage_1_2.java revision 608:7e06bf1dcb09 
1/*
2 * Copyright (c) 2000, 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
26package com.sun.corba.se.impl.protocol.giopmsgheaders;
27
28import com.sun.corba.se.spi.ior.ObjectKey;
29
30import com.sun.corba.se.spi.ior.iiop.GIOPVersion;
31import com.sun.corba.se.spi.orb.ORB;
32
33/**
34 * This implements the GIOP 1.2 LocateRequest header.
35 *
36 * @author Ram Jeyaraman 05/14/2000
37 */
38
39public final class LocateRequestMessage_1_2 extends Message_1_2
40        implements LocateRequestMessage {
41
42    // Instance variables
43
44    private ORB orb = null;
45    private ObjectKey objectKey = null;
46    private TargetAddress target = null;
47
48    // Constructors
49
50    LocateRequestMessage_1_2(ORB orb) {
51        this.orb = orb;
52    }
53
54    LocateRequestMessage_1_2(ORB orb, int _request_id, TargetAddress _target) {
55        super(Message.GIOPBigMagic, GIOPVersion.V1_2, FLAG_NO_FRAG_BIG_ENDIAN,
56            Message.GIOPLocateRequest, 0);
57        this.orb = orb;
58        request_id = _request_id;
59        target = _target;
60    }
61
62    // Accessor methods (LocateRequestMessage interface)
63
64    public int getRequestId() {
65        return this.request_id;
66    }
67
68    public ObjectKey getObjectKey() {
69        if (this.objectKey == null) {
70            // this will raise a MARSHAL exception upon errors.
71            this.objectKey = MessageBase.extractObjectKey(target, orb);
72        }
73
74        return this.objectKey;
75    }
76
77    // IO methods
78
79    public void read(org.omg.CORBA.portable.InputStream istream) {
80        super.read(istream);
81        this.request_id = istream.read_ulong();
82        this.target = TargetAddressHelper.read(istream);
83        getObjectKey(); // this does AddressingDisposition check
84    }
85
86    public void write(org.omg.CORBA.portable.OutputStream ostream) {
87        super.write(ostream);
88        ostream.write_ulong (this.request_id);
89        nullCheck(this.target);
90        TargetAddressHelper.write(ostream, this.target);
91    }
92
93    public void callback(MessageHandler handler)
94        throws java.io.IOException
95    {
96        handler.handleInput(this);
97    }
98} // class LocateRequestMessage_1_2
99