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}