content: /*******************************************************************************
   * Copyright 2011 Albin Theander
   * 
   * Licensed under the Apache License, Version 2.0 (the "License");
   * you may not use this file except in compliance with the License.
   * You may obtain a copy of the License at
   * 
   *   http://www.apache.org/licenses/LICENSE-2.0
   * 
   * Unless required by applicable law or agreed to in writing, software
   * distributed under the License is distributed on an "AS IS" BASIS,
   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   * See the License for the specific language governing permissions and
   * limitations under the License.
   ******************************************************************************/
  package org.meqantt.netty;
  
  import org.jboss.netty.buffer.ChannelBuffer;
  import org.jboss.netty.buffer.ChannelBuffers;
  import org.jboss.netty.channel.Channel;
  import org.jboss.netty.channel.ChannelHandler;
  import org.jboss.netty.channel.ChannelHandlerContext;
  import org.jboss.netty.handler.codec.oneone.OneToOneEncoder;
  import org.meqantt.message.Message;
  
  
  public class MqttMessageEncoder extends OneToOneEncoder implements
  		ChannelHandler {
  
  	@Override
  	protected Object encode(ChannelHandlerContext ctc, Channel channel,
  			Object msg) throws Exception {
  		if (!(msg instanceof Message)) {
  			return null;
  		}
  		byte[] data = ((Message) msg).toBytes();
  		ChannelBuffer buf = ChannelBuffers.dynamicBuffer();
  		buf.writeBytes(data); // data
  		return buf;
  	}
  
  }
  