/*

  * 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.graph.partition;

 import java.io.DataInput;

 import java.io.DataOutput;

 import java.io.IOException;

 import org.apache.giraph.graph.BspUtils;

 import org.apache.hadoop.io.WritableComparable;

 /**

  * Added the max key index in to the {@link PartitionOwner}.  Also can provide

  * a split hint if desired.

  *

  * @param <I> Vertex index type

  */

 @SuppressWarnings("rawtypes")

 public class RangePartitionOwner<I extends WritableComparable>

     extends BasicPartitionOwner {

   /** Max index for this partition */

   private I maxIndex;

   /**

    * Default constructor.

    */

   public RangePartitionOwner() { }

   /**

    * Constructor with the max index.

    *

    * @param maxIndex Max index of this partition.

    */

   public RangePartitionOwner(I maxIndex) {

     this.maxIndex = maxIndex;

   }

   /**

    * Get the maximum index of this partition owner.

    *

    * @return Maximum index.

    */

   public I getMaxIndex() {

     return maxIndex;

   }

   @Override

   public void readFields(DataInput input) throws IOException {

     super.readFields(input);

     maxIndex = BspUtils.<I>createVertexId(getConf());

     maxIndex.readFields(input);

   }

   @Override

   public void write(DataOutput output) throws IOException {

     super.write(output);

     maxIndex.write(output);

   }

 }