/*

  * Licensed to the Apache Software Foundation (ASF) under one

  * or more contributor license agreements.  See the NOTICE file

  * distributed with this work for additional information

  * regarding copyright ownership.  The ASF licenses this file

  * to you under the Apache License, Version 2.0 (the

  * "License"); you may not use this file except in compliance

  * with the License.  You may obtain a copy of the License at

  *

  *     http://www.apache.org/licenses/LICENSE-2.0

  *

  * Unless required by applicable law or agreed to in writing, software

  * distributed under the License is distributed on an "AS IS" BASIS,

  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.

  * See the License for the specific language governing permissions and

  * limitations under the License.

  */

 package org.apache.giraph.writable.kryo;

 import java.io.DataInput;

 import java.io.DataOutput;

 import java.io.IOException;

 import com.esotericsoftware.kryo.io.Input;

 import com.esotericsoftware.kryo.io.Output;

 import org.apache.giraph.writable.kryo.markers.KryoIgnoreWritable;

 /**

  * Class which you can extend to get all serialization/deserialization

  * done automagically.

  *

  * Usage of this class is similar to KryoWritable but

  * unlike KryoWritable, this class does not

  * support recursive/nested objects to provide better

  * performance.

  *

  * If the underlying stream is a kryo output stream than the read/write

  * happens with a kryo object that doesn't track references, providing

  * significantly better performance.

  *

  */

 public abstract class KryoSimpleWritable implements KryoIgnoreWritable {

   @Override

   public final void write(DataOutput out) throws IOException {

     if (out instanceof Output) {

       Output outp = (Output) out;

       HadoopKryo.writeWithKryoOutOfObject(

               HadoopKryo.getNontrackingKryo(), outp, this);

     } else {

       HadoopKryo.writeOutOfObject(out, this);

     }

   }

   @Override

   public final void readFields(DataInput in) throws IOException {

     if (in instanceof Input) {

       Input inp = (Input) in;

       HadoopKryo.readWithKryoIntoObject(

               HadoopKryo.getNontrackingKryo(), inp, this);

     } else {

       HadoopKryo.readIntoObject(in, this);

     }

   }

 }