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.DataInput; 020 import java.io.DataOutput; 021 import java.io.IOException; 022 023 import org.apache.activemq.openwire.OpenWireFormat; 024 import org.apache.activemq.util.ByteSequence; 025 import org.apache.activemq.wireformat.WireFormat; 026 027 /** 028 * Marshall a Message or a MessageReference 029 * 030 * @version $Revision: 1.10 $ 031 */ 032 public class CommandMarshaller implements Marshaller<Object> { 033 034 private WireFormat wireFormat; 035 036 public CommandMarshaller(WireFormat wireFormat) { 037 this.wireFormat = wireFormat; 038 039 } 040 041 public CommandMarshaller() { 042 this(new OpenWireFormat()); 043 } 044 045 public void writePayload(Object object, DataOutput dataOut) throws IOException { 046 ByteSequence packet = wireFormat.marshal(object); 047 dataOut.writeInt(packet.length); 048 dataOut.write(packet.data, packet.offset, packet.length); 049 } 050 051 public Object readPayload(DataInput dataIn) throws IOException { 052 int size = dataIn.readInt(); 053 byte[] data = new byte[size]; 054 dataIn.readFully(data); 055 return wireFormat.unmarshal(new ByteSequence(data)); 056 } 057 }