ActiveMQ example source code file (MessageMarshaller.java)

This example ActiveMQ source code file (MessageMarshaller.java) is included in the DevDaily.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" ^TM.

Java - ActiveMQ tags/keywords

bytesequence, bytesequence, dataoutput, io, ioexception, ioexception, marshaller, message, messagemarshaller, messagemarshaller, wireformat, wireformat

The ActiveMQ MessageMarshaller.java source code

/**
 * 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
 * 
 * 
 */
public class MessageMarshaller implements Marshaller<Message> {

    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));
    }
}