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 */ 017 package org.apache.activemq.kaha; 018 019 import java.io.ByteArrayInputStream; 020 import java.io.ByteArrayOutputStream; 021 import java.io.DataInput; 022 import java.io.DataOutput; 023 import java.io.IOException; 024 import java.io.ObjectInputStream; 025 import java.io.ObjectOutputStream; 026 027 /** 028 * Implementation of a Marshaller for Objects 029 * 030 * 031 */ 032 public 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 }