/*
* $Header: /home/cvs/jakarta-tomcat-catalina/modules/cluster/src/share/org/apache/catalina/cluster/io/Jdk13ObjectReader.java,v 1.2 2003/12/19 21:22:13 fhanik Exp $
* $Revision: 1.2 $
* $Date: 2003/12/19 21:22:13 $
*
* ====================================================================
*
* The Apache Software License, Version 1.1
*
* Copyright (c) 1999 The Apache Software Foundation. All rights
* reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
*
* 3. The end-user documentation included with the redistribution, if
* any, must include the following acknowlegement:
* "This product includes software developed by the
* Apache Software Foundation (http://www.apache.org/)."
* Alternately, this acknowlegement may appear in the software itself,
* if and wherever such third-party acknowlegements normally appear.
*
* 4. The names "The Jakarta Project", "Tomcat", and "Apache Software
* Foundation" must not be used to endorse or promote products derived
* from this software without prior written permission. For written
* permission, please contact apache@apache.org.
*
* 5. Products derived from this software may not be called "Apache"
* nor may "Apache" appear in their names without prior written
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*
* THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
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* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
* ====================================================================
*
* This software consists of voluntary contributions made by many
* individuals on behalf of the Apache Software Foundation. For more
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* <http://www.apache.org/>.
*
* [Additional notices, if required by prior licensing conditions]
*
*/
package org.apache.catalina.cluster.io;
/**
* The object reader object is an object used in conjunction with
* java.nio TCP messages. This object stores the message bytes in a
* <code>XByteBuffer</code> until a full package has been received.
* When a full package has been received, the append method will call messageDataReceived
* on the callback object associated with this object reader.<BR>
* This object uses an XByteBuffer which is an extendable object buffer that also allows
* for message encoding and decoding.
*
* @author Filip Hanik
* @version $Revision: 1.2 $, $Date: 2003/12/19 21:22:13 $
*/
import java.net.Socket;
import java.nio.ByteBuffer;
import java.io.IOException;
import org.apache.catalina.cluster.io.XByteBuffer;
public class Jdk13ObjectReader
{
private Socket socket;
private ListenCallback callback;
private XByteBuffer buffer;
public Jdk13ObjectReader( Socket socket,
ListenCallback callback ) {
this.socket = socket;
this.callback = callback;
this.buffer = new XByteBuffer();
}
public int append(byte[] data,int off,int len) throws java.io.IOException {
boolean result = false;
buffer.append(data,off,len);
int pkgCnt = 0;
boolean pkgExists = buffer.doesPackageExist();
while ( pkgExists ) {
byte[] b = buffer.extractPackage(true);
callback.messageDataReceived(b);
pkgCnt++;
pkgExists = buffer.doesPackageExist();
}//end if
return pkgCnt;
}
public int execute() throws java.io.IOException {
return append(new byte[0],0,0);
}
public int write(byte[] data)
throws java.io.IOException {
socket.getOutputStream().write(data);
return 0;
}
}