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; 022import org.apache.activemq.store.kahadb.disk.journal.Location; 023 024public class LocationMarshaller implements Marshaller<Location> { 025 026 public final static LocationMarshaller INSTANCE = new LocationMarshaller(); 027 028 public LocationMarshaller () { 029 030 } 031 032 public Location readPayload(DataInput dataIn) throws IOException { 033 Location rc = new Location(); 034 rc.setDataFileId(dataIn.readInt()); 035 rc.setOffset(dataIn.readInt()); 036 return rc; 037 } 038 039 public void writePayload(Location object, DataOutput dataOut) throws IOException { 040 dataOut.writeInt(object.getDataFileId()); 041 dataOut.writeInt(object.getOffset()); 042 } 043 044 public int getFixedSize() { 045 return 8; 046 } 047 048 public Location deepCopy(Location source) { 049 return new Location(source); 050 } 051 052 public boolean isDeepCopySupported() { 053 return true; 054 } 055}