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.activemq.store.kahadb.disk.util;
018    
019    import java.io.DataInput;
020    import java.io.DataOutput;
021    import java.io.IOException;
022    
023    /**
024     * Implementation of a Marshaller for Strings
025     * 
026     * 
027     */
028    public 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    }