1 /* 2 * Licensed to the Apache Software Foundation (ASF) under one 3 * or more contributor license agreements. See the NOTICE file 4 * distributed with this work for additional information 5 * regarding copyright ownership. The ASF licenses this file 6 * to you under the Apache License, Version 2.0 (the 7 * "License"); you may not use this file except in compliance 8 * with the License. You may obtain a copy of the License at 9 * 10 * http://www.apache.org/licenses/LICENSE-2.0 11 * 12 * Unless required by applicable law or agreed to in writing, software 13 * distributed under the License is distributed on an "AS IS" BASIS, 14 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 15 * See the License for the specific language governing permissions and 16 * limitations under the License. 17 */ 18 package org.apache.giraph.block_app.test_setup.graphs; 19 20 import org.apache.giraph.block_app.test_setup.NumericTestGraph; 21 import org.apache.giraph.block_app.test_setup.TestGraphModifier; 22 import org.apache.giraph.function.Consumer; 23 import org.apache.giraph.graph.Vertex; 24 import org.apache.hadoop.io.Writable; 25 import org.apache.hadoop.io.WritableComparable; 26 27 /** 28 * Traverse each Vertex in the graph, and initialize it with a given 29 * consumer function. 30 * 31 * @param <I> Vertex id type 32 * @param <V> Vertex value type 33 * @param <E> Edge value type 34 */ 35 public class EachVertexInit<I extends WritableComparable, V extends Writable, 36 E extends Writable> implements TestGraphModifier<I, V, E> { 37 private final Consumer<Vertex<I, V, E>> vertexConsumer; 38 39 public EachVertexInit(Consumer<Vertex<I, V, E>> vertexConsumer) { 40 this.vertexConsumer = vertexConsumer; 41 } 42 43 @Override 44 public void modifyGraph(NumericTestGraph<I, V, E> graph) { 45 for (Vertex<I, V, E> vertex : graph.getTestGraph()) { 46 vertexConsumer.apply(vertex); 47 } 48 } 49 }