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    1   /**
    2    * Licensed to the Apache Software Foundation (ASF) under one or more
    3    * contributor license agreements.  See the NOTICE file distributed with
    4    * this work for additional information regarding copyright ownership.
    5    * The ASF licenses this file to You under the Apache License, Version 2.0
    6    * (the "License"); you may not use this file except in compliance with
    7    * the License.  You may obtain a copy of the License at
    8    *
    9    *      http://www.apache.org/licenses/LICENSE-2.0
   10    *
   11    * Unless required by applicable law or agreed to in writing, software
   12    * distributed under the License is distributed on an "AS IS" BASIS,
   13    * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   14    * See the License for the specific language governing permissions and
   15    * limitations under the License.
   16    */
   17   package org.apache.activemq.kaha;
   18   
   19   import java.io.ByteArrayInputStream;
   20   import java.io.ByteArrayOutputStream;
   21   import java.io.DataInput;
   22   import java.io.DataOutput;
   23   import java.io.IOException;
   24   import java.io.ObjectInputStream;
   25   import java.io.ObjectOutputStream;
   26   
   27   /**
   28    * Implementation of a Marshaller for Objects
   29    * 
   30    * @version $Revision: 1.2 $
   31    */
   32   public class ObjectMarshaller implements Marshaller {
   33   
   34       /**
   35        * Write the payload of this entry to the RawContainer
   36        * 
   37        * @param object
   38        * @param dataOut
   39        * @throws IOException
   40        */
   41       public void writePayload(Object object, DataOutput dataOut) throws IOException {
   42           ByteArrayOutputStream bytesOut = new ByteArrayOutputStream();
   43           ObjectOutputStream objectOut = new ObjectOutputStream(bytesOut);
   44           objectOut.writeObject(object);
   45           objectOut.close();
   46           byte[] data = bytesOut.toByteArray();
   47           dataOut.writeInt(data.length);
   48           dataOut.write(data);
   49       }
   50   
   51       /**
   52        * Read the entry from the RawContainer
   53        * 
   54        * @param dataIn
   55        * @return unmarshalled object
   56        * @throws IOException
   57        */
   58       public Object readPayload(DataInput dataIn) throws IOException {
   59           int size = dataIn.readInt();
   60           byte[] data = new byte[size];
   61           dataIn.readFully(data);
   62           ByteArrayInputStream bytesIn = new ByteArrayInputStream(data);
   63           ObjectInputStream objectIn = new ObjectInputStream(bytesIn);
   64           try {
   65               return objectIn.readObject();
   66           } catch (ClassNotFoundException e) {
   67               throw new IOException(e.getMessage());
   68           }
   69       }
   70   }

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