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.kahadb.util; 018 019import java.io.DataInput; 020import java.io.DataOutput; 021import java.io.IOException; 022 023/** 024 * Implementation of a Marshaller for Strings 025 * 026 * 027 */ 028public class StringMarshaller implements Marshaller<String> { 029 030 public static final StringMarshaller INSTANCE = new StringMarshaller(); 031 032 /** 033 * Write the payload of this entry to the RawContainer 034 * 035 * @param object 036 * @param dataOut 037 * @throws IOException 038 */ 039 public void writePayload(String object, DataOutput dataOut) throws IOException { 040 dataOut.writeUTF(object); 041 } 042 043 /** 044 * Read the entry from the RawContainer 045 * 046 * @param dataIn 047 * @return unmarshalled object 048 * @throws IOException 049 */ 050 public String readPayload(DataInput dataIn) throws IOException { 051 return dataIn.readUTF(); 052 } 053 054 055 public int getFixedSize() { 056 return -1; 057 } 058 059 public String deepCopy(String source) { 060 return source; 061 } 062 063 public boolean isDeepCopySupported() { 064 return true; 065 } 066}