/*

  * 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.block_app.test_setup.graphs;

 import org.apache.giraph.block_app.test_setup.NumericTestGraph;

 import org.apache.giraph.block_app.test_setup.TestGraphModifier;

 import org.apache.giraph.function.Consumer;

 import org.apache.giraph.graph.Vertex;

 import org.apache.hadoop.io.Writable;

 import org.apache.hadoop.io.WritableComparable;

 /**

  * Traverse each Vertex in the graph, and initialize it with a given

  * consumer function.

  *

  * @param <I> Vertex id type

  * @param <V> Vertex value type

  * @param <E> Edge value type

  */

 public class EachVertexInit<I extends WritableComparable, V extends Writable,

     E extends Writable> implements TestGraphModifier<I, V, E> {

   private final Consumer<Vertex<I, V, E>> vertexConsumer;

   public EachVertexInit(Consumer<Vertex<I, V, E>> vertexConsumer) {

     this.vertexConsumer = vertexConsumer;

   }

   @Override

   public void modifyGraph(NumericTestGraph<I, V, E> graph) {

     for (Vertex<I, V, E> vertex : graph.getTestGraph()) {

       vertexConsumer.apply(vertex);

     }

   }

 }