/*

  * 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.mapping;

 import org.apache.hadoop.io.LongWritable;

 /**

  * MappingStoreOps implementation which reads partition information from map

  */

 @SuppressWarnings("unchecked, rawtypes")

 public class DefaultLongByteOps extends AbstractLongByteOps {

   /**

    * Default constructor (do not use)

    */

   public DefaultLongByteOps() {

   }

   @Override

   public boolean hasEmbedding() {

     return false;

   }

   @Override

   public void embedTargetInfo(LongWritable id) {

     throw new UnsupportedOperationException();

   }

   @Override

   public void removeTargetInfo(LongWritable id) {

     throw new UnsupportedOperationException();

   }

   @Override

   public int getPartition(LongWritable id, int partitionCount,

     int workerCount) {

     byte target = mappingStore.getByteTarget(id);

     return computePartition(id, partitionCount, workerCount, target);

   }

 }