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.fusesource.hawtbuf.codec;
018    
019    import java.io.DataInput;
020    import java.io.DataOutput;
021    import java.io.IOException;
022    
023    /**
024     * Implementation of a Marshaller for byte arrays
025     * 
026     */
027    public class BytesCodec implements Codec<byte[]> {
028    
029        public static final BytesCodec INSTANCE = new BytesCodec();
030    
031        public void encode(byte[] data, DataOutput dataOut) throws IOException {
032            dataOut.writeInt(data.length);
033            dataOut.write(data);
034        }
035    
036        public byte[] decode(DataInput dataIn) throws IOException {
037            int size = dataIn.readInt();
038            byte[] data = new byte[size];
039            dataIn.readFully(data);
040            return data;
041        }
042        
043        public int getFixedSize() {
044            return -1;
045        }
046    
047        public byte[] deepCopy(byte[] source) {
048            byte []rc = new byte[source.length];
049            System.arraycopy(source, 0, rc, 0, source.length);
050            return rc;
051        }
052    
053        public boolean isDeepCopySupported() {
054            return true;
055        }
056    
057        public boolean isEstimatedSizeSupported() {
058            return true;
059        }
060    
061        public int estimatedSize(byte[] object) {
062            return object.length+4;
063        }
064    }