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Java example source code file (ReplyMessage_1_2.java)

This example Java source code file (ReplyMessage_1_2.java) is included in the alvinalexander.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" TM.

Learn more about this Java project at its project page.

Java - Java tags/keywords

cdrinputstream, completionstatus, corba, flag_no_frag_big_endian, integer, ior, location_forward_perm, needs_addressing_mode, no_exception, orbutilsystemexception, replymessage_1_2, servicecontexts, string, system_exception, user_exception

The ReplyMessage_1_2.java Java example source code

/*
 * Copyright (c) 2000, 2004, Oracle and/or its affiliates. All rights reserved.
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 *
 * This code is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License version 2 only, as
 * published by the Free Software Foundation.  Oracle designates this
 * particular file as subject to the "Classpath" exception as provided
 * by Oracle in the LICENSE file that accompanied this code.
 *
 * This code is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
 * version 2 for more details (a copy is included in the LICENSE file that
 * accompanied this code).
 *
 * You should have received a copy of the GNU General Public License version
 * 2 along with this work; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
 *
 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
 * or visit www.oracle.com if you need additional information or have any
 * questions.
 */

package com.sun.corba.se.impl.protocol.giopmsgheaders;

import org.omg.CORBA.INTERNAL;
import org.omg.CORBA.SystemException;
import org.omg.CORBA.CompletionStatus;

import com.sun.corba.se.spi.ior.IOR;
import com.sun.corba.se.spi.ior.IORFactories ;

import com.sun.corba.se.spi.orb.ORB;

import com.sun.corba.se.spi.servicecontext.ServiceContexts;
import com.sun.corba.se.spi.ior.iiop.GIOPVersion;

import com.sun.corba.se.impl.encoding.CDRInputStream;
import com.sun.corba.se.impl.encoding.CDROutputStream;
import com.sun.corba.se.impl.encoding.CDRInputStream_1_2;
import com.sun.corba.se.impl.encoding.CDROutputStream_1_2;

import com.sun.corba.se.impl.orbutil.ORBUtility;
import com.sun.corba.se.impl.orbutil.ORBConstants;

import com.sun.corba.se.spi.logging.CORBALogDomains ;
import com.sun.corba.se.impl.logging.ORBUtilSystemException ;

/**
 * This implements the GIOP 1.2 Reply header.
 *
 * @author Ram Jeyaraman 05/14/2000
 */

public final class ReplyMessage_1_2 extends Message_1_2
        implements ReplyMessage {

    // Instance variables

    private ORB orb = null;
    private ORBUtilSystemException wrapper = null ;
    private int reply_status = (int) 0;
    private ServiceContexts service_contexts = null;
    private IOR ior = null;
    private String exClassName = null;
    private int minorCode = (int) 0;
    private CompletionStatus completionStatus = null;
    private short addrDisposition = KeyAddr.value; // default;

    // Constructors

    ReplyMessage_1_2(ORB orb) {
        this.orb = orb;
        this.wrapper = ORBUtilSystemException.get( orb,
            CORBALogDomains.RPC_PROTOCOL ) ;
    }

    ReplyMessage_1_2(ORB orb, int _request_id, int _reply_status,
            ServiceContexts _service_contexts, IOR _ior) {
        super(Message.GIOPBigMagic, GIOPVersion.V1_2, FLAG_NO_FRAG_BIG_ENDIAN,
            Message.GIOPReply, 0);
        this.orb = orb;
        this.wrapper = ORBUtilSystemException.get( orb,
            CORBALogDomains.RPC_PROTOCOL ) ;
        request_id = _request_id;
        reply_status = _reply_status;
        service_contexts = _service_contexts;
        ior = _ior;
    }

    // Accessor methods

    public int getRequestId() {
        return this.request_id;
    }

    public int getReplyStatus() {
        return this.reply_status;
    }

    public short getAddrDisposition() {
        return this.addrDisposition;
    }

    public ServiceContexts getServiceContexts() {
        return this.service_contexts;
    }

    public void setServiceContexts( ServiceContexts sc ) {
        this.service_contexts = sc;
    }

    public SystemException getSystemException(String message) {
        return MessageBase.getSystemException(
            exClassName, minorCode, completionStatus, message, wrapper);
    }

    public IOR getIOR() {
        return this.ior;
    }

    public void setIOR( IOR ior ) {
        this.ior = ior;
    }

    // IO methods

    public void read(org.omg.CORBA.portable.InputStream istream) {
        super.read(istream);
        this.request_id = istream.read_ulong();
        this.reply_status = istream.read_long();
        isValidReplyStatus(this.reply_status); // raises exception on error
        this.service_contexts
            = new ServiceContexts((org.omg.CORBA_2_3.portable.InputStream) istream);

        // CORBA formal 00-11-0 15.4.2.2 GIOP 1.2 body must be
        // aligned on an 8 octet boundary.
        // Ensures that the first read operation called from the stub code,
        // during body deconstruction, would skip the header padding, that was
        // inserted to ensure that the body was aligned on an 8-octet boundary.
        ((CDRInputStream)istream).setHeaderPadding(true);

        // The code below reads the reply body in some cases
        // SYSTEM_EXCEPTION & LOCATION_FORWARD & LOCATION_FORWARD_PERM &
        // NEEDS_ADDRESSING_MODE
        if (this.reply_status == SYSTEM_EXCEPTION) {

            String reposId = istream.read_string();
            this.exClassName = ORBUtility.classNameOf(reposId);
            this.minorCode = istream.read_long();
            int status = istream.read_long();

            switch (status) {
            case CompletionStatus._COMPLETED_YES:
                this.completionStatus = CompletionStatus.COMPLETED_YES;
                break;
            case CompletionStatus._COMPLETED_NO:
                this.completionStatus = CompletionStatus.COMPLETED_NO;
                break;
            case CompletionStatus._COMPLETED_MAYBE:
                this.completionStatus = CompletionStatus.COMPLETED_MAYBE;
                break;
            default:
                throw wrapper.badCompletionStatusInReply(
                    CompletionStatus.COMPLETED_MAYBE, new Integer(status) );
            }

        } else if (this.reply_status == USER_EXCEPTION) {
            // do nothing. The client stub will read the exception from body.
        } else if ( (this.reply_status == LOCATION_FORWARD) ||
                (this.reply_status == LOCATION_FORWARD_PERM) ){
            CDRInputStream cdr = (CDRInputStream) istream;
            this.ior = IORFactories.makeIOR( cdr ) ;
        }  else if (this.reply_status == NEEDS_ADDRESSING_MODE) {
            // read GIOP::AddressingDisposition from body and resend the
            // original request using the requested addressing mode. The
            // resending is transparent to the client program.
            this.addrDisposition = AddressingDispositionHelper.read(istream);
        }
    }

    // Note, this writes only the header information. SystemException or
    // IOR or GIOP::AddressingDisposition may be written afterwards into the
    // reply mesg body.
    public void write(org.omg.CORBA.portable.OutputStream ostream) {
        super.write(ostream);
        ostream.write_ulong(this.request_id);
        ostream.write_long(this.reply_status);
        if (this.service_contexts != null) {
                service_contexts.write(
                (org.omg.CORBA_2_3.portable.OutputStream) ostream,
                GIOPVersion.V1_2);
            } else {
                ServiceContexts.writeNullServiceContext(
                (org.omg.CORBA_2_3.portable.OutputStream) ostream);
        }

        // CORBA formal 00-11-0 15.4.2.2 GIOP 1.2 body must be
        // aligned on an 8 octet boundary.
        // Ensures that the first write operation called from the stub code,
        // during body construction, would insert a header padding, such that
        // the body is aligned on an 8-octet boundary.
        ((CDROutputStream)ostream).setHeaderPadding(true);

    }

    // Static methods

    public static void isValidReplyStatus(int replyStatus) {
        switch (replyStatus) {
        case NO_EXCEPTION :
        case USER_EXCEPTION :
        case SYSTEM_EXCEPTION :
        case LOCATION_FORWARD :
        case LOCATION_FORWARD_PERM :
        case NEEDS_ADDRESSING_MODE :
            break;
        default :
            ORBUtilSystemException localWrapper = ORBUtilSystemException.get(
                CORBALogDomains.RPC_PROTOCOL ) ;
            throw localWrapper.illegalReplyStatus( CompletionStatus.COMPLETED_MAYBE);
        }
    }

    public void callback(MessageHandler handler)
        throws java.io.IOException
    {
        handler.handleInput(this);
    }
} // class ReplyMessage_1_2

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