001/**
002 * Licensed to the Apache Software Foundation (ASF) under one or more
003 * contributor license agreements.  See the NOTICE file distributed with
004 * this work for additional information regarding copyright ownership.
005 * The ASF licenses this file to You under the Apache License, Version 2.0
006 * (the "License"); you may not use this file except in compliance with
007 * the License.  You may obtain a copy of the License at
008 *
009 *      http://www.apache.org/licenses/LICENSE-2.0
010 *
011 * Unless required by applicable law or agreed to in writing, software
012 * distributed under the License is distributed on an "AS IS" BASIS,
013 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
014 * See the License for the specific language governing permissions and
015 * limitations under the License.
016 */
017package org.apache.activemq.kaha;
018
019import java.io.ByteArrayInputStream;
020import java.io.ByteArrayOutputStream;
021import java.io.DataInput;
022import java.io.DataOutput;
023import java.io.IOException;
024import java.io.ObjectInputStream;
025import java.io.ObjectOutputStream;
026
027/**
028 * Implementation of a Marshaller for Objects
029 * 
030 * 
031 */
032public class ObjectMarshaller implements Marshaller {
033
034    /**
035     * Write the payload of this entry to the RawContainer
036     * 
037     * @param object
038     * @param dataOut
039     * @throws IOException
040     */
041    public void writePayload(Object object, DataOutput dataOut) throws IOException {
042        ByteArrayOutputStream bytesOut = new ByteArrayOutputStream();
043        ObjectOutputStream objectOut = new ObjectOutputStream(bytesOut);
044        objectOut.writeObject(object);
045        objectOut.close();
046        byte[] data = bytesOut.toByteArray();
047        dataOut.writeInt(data.length);
048        dataOut.write(data);
049    }
050
051    /**
052     * Read the entry from the RawContainer
053     * 
054     * @param dataIn
055     * @return unmarshalled object
056     * @throws IOException
057     */
058    public Object readPayload(DataInput dataIn) throws IOException {
059        int size = dataIn.readInt();
060        byte[] data = new byte[size];
061        dataIn.readFully(data);
062        ByteArrayInputStream bytesIn = new ByteArrayInputStream(data);
063        ObjectInputStream objectIn = new ObjectInputStream(bytesIn);
064        try {
065            return objectIn.readObject();
066        } catch (ClassNotFoundException e) {
067            throw new IOException(e.getMessage());
068        }
069    }
070}