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/**
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You 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.apache.activemq.kaha;
import java.io.DataInput;
import java.io.DataOutput;
import java.io.IOException;
import org.apache.activemq.command.Message;
import org.apache.activemq.util.ByteSequence;
import org.apache.activemq.wireformat.WireFormat;
/**
* Implementation of a Marshaller for MessageIds
*
* @version $Revision: 1.2 $
*/
public class MessageMarshaller implements Marshaller {
private WireFormat wireFormat;
/**
* Constructor
*
* @param wireFormat
*/
public MessageMarshaller(WireFormat wireFormat) {
this.wireFormat = wireFormat;
}
/**
* Write the payload of this entry to the RawContainer
*
* @param message
* @param dataOut
* @throws IOException
*/
public void writePayload(Message message, DataOutput dataOut) throws IOException {
ByteSequence packet = wireFormat.marshal(message);
dataOut.writeInt(packet.length);
dataOut.write(packet.data, packet.offset, packet.length);
}
/**
* Read the entry from the RawContainer
*
* @param dataIn
* @return unmarshalled object
* @throws IOException
*/
public Message readPayload(DataInput dataIn) throws IOException {
int size = dataIn.readInt();
byte[] data = new byte[size];
dataIn.readFully(data);
return (Message)wireFormat.unmarshal(new ByteSequence(data));
}
}