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.kahadb.util; 018 019 import java.io.DataInput; 020 import java.io.DataOutput; 021 import java.io.IOException; 022 import org.apache.kahadb.journal.Location; 023 024 public class LocationMarshaller implements Marshaller<Location> { 025 public final static LocationMarshaller INSTANCE = new LocationMarshaller(); 026 027 public Location readPayload(DataInput dataIn) throws IOException { 028 Location rc = new Location(); 029 rc.setDataFileId(dataIn.readInt()); 030 rc.setOffset(dataIn.readInt()); 031 return rc; 032 } 033 034 public void writePayload(Location object, DataOutput dataOut) throws IOException { 035 dataOut.writeInt(object.getDataFileId()); 036 dataOut.writeInt(object.getOffset()); 037 } 038 039 public int getFixedSize() { 040 return 8; 041 } 042 043 public Location deepCopy(Location source) { 044 return new Location(source); 045 } 046 047 public boolean isDeepCopySupported() { 048 return true; 049 } 050 }