JMFAMF3MessagingCodec.java

/**
 *   GRANITE DATA SERVICES
 *   Copyright (C) 2006-2015 GRANITE DATA SERVICES S.A.S.
 *
 *   This file is part of the Granite Data Services Platform.
 *
 *   Granite Data Services 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 (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 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
 *   USA, or see <http://www.gnu.org/licenses/>.
 */
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.messaging.channel.Channel;
import org.granite.client.messaging.jmf.ClientSharedContext;
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<Message[]> {
	
	private final ClientSharedContext sharedContext;
	
	public JMFAMF3MessagingCodec(ClientSharedContext sharedContext) {
		this.sharedContext = sharedContext;
	}

	@Override
	public ClientType getClientType() {
		return ClientType.JAVA;
	}

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

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

	@Override
	public Message[] decode(InputStream input) throws IOException {
		JMFDeserializer deserializer = new JMFDeserializer(input, sharedContext);
		
		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), sharedContext);
						message.setBody(deserializer.readObject());
					}
				}
			}
		}
		catch (ClassNotFoundException e) {
			throw new IOException(e);
		}
		
		return (messages != null ? messages : new Message[0]);
	}
}