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 
  26 package com.sun.corba.se.impl.protocol.giopmsgheaders;
  27 
  28 import com.sun.corba.se.spi.ior.ObjectKey;
  29 
  30 import com.sun.corba.se.spi.ior.iiop.GIOPVersion;
  31 import 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 
  39 public 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