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 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}