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Java > Open Source Codes > org > apache > activemq > kaha > CommandMarshaller


1 /**
2  *
3  * Licensed to the Apache Software Foundation (ASF) under one or more
4  * contributor license agreements. See the NOTICE file distributed with
5  * this work for additional information regarding copyright ownership.
6  * The ASF licenses this file to You under the Apache License, Version 2.0
7  * (the "License"); you may not use this file except in compliance with
8  * the License. You may obtain a copy of the License at
9  *
10  * http://www.apache.org/licenses/LICENSE-2.0
11  *
12  * Unless required by applicable law or agreed to in writing, software
13  * distributed under the License is distributed on an "AS IS" BASIS,
14  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
15  * See the License for the specific language governing permissions and
16  * limitations under the License.
17  */
18 package org.apache.activemq.kaha;
19
20 import java.io.DataInput JavaDoc;
21 import java.io.DataOutput JavaDoc;
22 import java.io.IOException JavaDoc;
23 import org.apache.activemq.kaha.Marshaller;
24 import org.apache.activemq.util.ByteSequence;
25 import org.apache.activemq.wireformat.WireFormat;
26
27 /**
28  * Marshall a Message or a MessageReference
29  * @version $Revision: 1.10 $
30  */
31 public class CommandMarshaller implements Marshaller<Object JavaDoc> {
32     
33     private WireFormat wireFormat;
34     public CommandMarshaller(WireFormat wireFormat){
35         this.wireFormat = wireFormat;
36       
37     }
38     
39     public void writePayload(Object JavaDoc object,DataOutput JavaDoc dataOut) throws IOException JavaDoc{
40         ByteSequence packet = wireFormat.marshal(object);
41         dataOut.writeInt(packet.length);
42         dataOut.write(packet.data, packet.offset, packet.length);
43     }
44
45    
46     public Object JavaDoc readPayload(DataInput JavaDoc dataIn) throws IOException JavaDoc{
47         int size=dataIn.readInt();
48         byte[] data=new byte[size];
49         dataIn.readFully(data);
50         return wireFormat.unmarshal(new ByteSequence(data));
51     }
52 }
53
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