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.store.kahadb.disk.util;
018
019import java.io.DataInput;
020import java.io.DataOutput;
021import java.io.IOException;
022
023/**
024 * Implementation of a Marshaller for byte arrays
025 * 
026 * 
027 */
028public class BytesMarshaller implements Marshaller<byte[]> {
029
030    public void writePayload(byte[] data, DataOutput dataOut) throws IOException {
031        dataOut.writeInt(data.length);
032        dataOut.write(data);
033    }
034
035    public byte[] readPayload(DataInput dataIn) throws IOException {
036        int size = dataIn.readInt();
037        byte[] data = new byte[size];
038        dataIn.readFully(data);
039        return data;
040    }
041    
042    public int getFixedSize() {
043        return -1;
044    }
045
046    public byte[] deepCopy(byte[] source) {
047        byte []rc = new byte[source.length];
048        System.arraycopy(source, 0, rc, 0, source.length);
049        return rc;
050    }
051
052    public boolean isDeepCopySupported() {
053        return true;
054    }
055}