/*

  * 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.io.gora;

 import java.io.IOException;

 import org.apache.giraph.edge.Edge;

 import org.apache.giraph.io.gora.generated.GEdgeResult;

 import org.apache.gora.persistency.Persistent;

 import org.apache.hadoop.io.DoubleWritable;

 import org.apache.hadoop.io.FloatWritable;

 import org.apache.hadoop.io.LongWritable;

 import org.apache.hadoop.mapreduce.TaskAttemptContext;

 /**

  * Implementation of a specific writer for a generated data bean.

  */

 public class GoraGEdgeEdgeOutputFormat

   extends GoraEdgeOutputFormat<LongWritable, DoubleWritable,

   FloatWritable> {

   /**

    * Default constructor

    */

   public GoraGEdgeEdgeOutputFormat() {

   }

   @Override

   public GoraEdgeWriter createEdgeWriter(

       TaskAttemptContext context) throws IOException, InterruptedException {

     return new GoraGEdgeEdgeWriter();

   }

   /**

    * Gora edge writer.

    */

   protected class GoraGEdgeEdgeWriter

     extends GoraEdgeWriter {

     @Override

     protected Persistent getGoraEdge(LongWritable srcId,

         DoubleWritable srcValue, Edge<LongWritable, FloatWritable> edge) {

       GEdgeResult tmpGEdge = new GEdgeResult();

       tmpGEdge.setEdgeId(srcId.toString());

       tmpGEdge.setEdgeWeight(edge.getValue().get());

       tmpGEdge.setVertexOutId(edge.getTargetVertexId().toString());

       getLogger().debug("GoraObject created: " + tmpGEdge.toString());

       return tmpGEdge;

     }

     @Override

     protected Object getGoraKey(LongWritable srcId,

         DoubleWritable srcValue, Edge<LongWritable, FloatWritable> edge) {

       String goraKey = String.valueOf(

           edge.getTargetVertexId().get() + edge.getValue().get());

       return goraKey;

     }

   }

 }