/*

  * 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.combiner;

 import org.apache.hadoop.io.IntWritable;

 import org.apache.hadoop.io.WritableComparable;

 /**

  * MessageCombiner which sums up {@link IntWritable} message values.

  *

  * Use SumMessageCombiner.INT instead.

  */

 @Deprecated

 public class SimpleSumMessageCombiner

     implements MessageCombiner<WritableComparable, IntWritable> {

   @Override

   public void combine(WritableComparable vertexIndex,

       IntWritable originalMessage, IntWritable messageToCombine) {

     originalMessage.set(originalMessage.get() + messageToCombine.get());

   }

   @Override

   public IntWritable createInitialMessage() {

     return new IntWritable(0);

   }

 }