org.granite.client.messaging.codec.JMFAMF3MessagingCodec Maven / Gradle / Ivy

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/*
  GRANITE DATA SERVICES
  Copyright (C) 2012 GRANITE DATA SERVICES S.A.S.

  This file is part of Granite Data Services.

  Granite Data Services is free software; you can redistribute it and/or modify
  it under the terms of the GNU Library General Public License as published by
  the Free Software Foundation; either version 2 of the License, or (at your
  option) any later version.

  Granite Data Services 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 Library General Public License
  for more details.

  You should have received a copy of the GNU Library General Public License
  along with this library; if not, see .
*/

package org.granite.client.messaging.codec;

import java.io.ByteArrayInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;

import org.granite.client.configuration.Configuration;
import org.granite.client.messaging.channel.Channel;
import org.granite.client.messaging.jmf.ClientSharedContextFactory;
import org.granite.messaging.jmf.JMFDeserializer;
import org.granite.messaging.jmf.JMFSerializer;
import org.granite.util.ContentType;

import flex.messaging.messages.Message;

/**
 * @author Franck WOLFF
 */
public class JMFAMF3MessagingCodec implements MessagingCodec {
	
	public JMFAMF3MessagingCodec(Configuration config) {
	}

	@Override
	public String getContentType() {
		return ContentType.JMF_AMF.mimeType();
	}

	@Override
	public void encode(Message[] messages, OutputStream output) throws IOException {
		JMFSerializer serializer = new JMFSerializer(output, ClientSharedContextFactory.getInstance());
		serializer.writeObject(messages);
	}

	@Override
	public Message[] decode(InputStream input) throws IOException {
		JMFDeserializer deserializer = new JMFDeserializer(input, ClientSharedContextFactory.getInstance());
		
		Message[] messages = null;
		try {
			messages = (Message[])deserializer.readObject();
			if (messages != null) {
				for (Message message : messages) {
					if (message != null && Boolean.TRUE.equals(message.getHeader(Channel.BYTEARRAY_BODY_HEADER))) {
						byte[] body = (byte[])message.getBody();
						deserializer = new JMFDeserializer(new ByteArrayInputStream(body), ClientSharedContextFactory.getInstance());
						message.setBody(deserializer.readObject());
					}
				}
			}
		}
		catch (ClassNotFoundException e) {
			throw new IOException(e);
		}
		
		return (messages != null ? messages : new Message[0]);
	}
}