/**
* EasyBeans
* Copyright (C) 2006 Bull S.A.S.
* Contact: easybeans@ow2.org
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or any later version.
*
* This library 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
* USA
*
* --------------------------------------------------------------------------
* $Id: Message.java 5369 2010-02-24 14:58:19Z benoitf $
* --------------------------------------------------------------------------
*/
package org.ow2.easybeans.component.smartclient.api;
import java.nio.ByteBuffer;
/**
* All messages needs to implement this interface.
* @author Florent Benoit
*/
public interface Message {
/**
* Size to store an int in bytes.
*/
int INT_BYTE_SIZE = 4;
/**
* Header.
* <ul>
* <li> byte = version</li>
* <li> byte = opcode</li>
* <li> int = length</li>
* </ul>
*/
int HEADER_SIZE = 1 + 1 + INT_BYTE_SIZE;
/**
* Gets the OpCode of this message.
* @return the operation code.
*/
byte getOpCode();
/**
* Gets a message to send.
* @return the bytebuffer to send
*/
ByteBuffer getMessage();
}