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.io.filters; 19 20 import org.apache.giraph.conf.DefaultImmutableClassesGiraphConfigurable; 21 import org.apache.giraph.graph.Vertex; 22 import org.apache.hadoop.io.Writable; 23 import org.apache.hadoop.io.WritableComparable; 24 25 /** 26 * Default vertex filter that lets in all vertices. 27 * 28 * @param <I> Vertex ID 29 * @param <V> Vertex Value 30 * @param <E> Edge Value 31 * @param <M> Message Value 32 */ 33 public class DefaultVertexInputFilter<I extends WritableComparable, 34 V extends Writable, E extends Writable, M extends Writable> 35 extends DefaultImmutableClassesGiraphConfigurable<I, V, E> 36 implements VertexInputFilter<I, V, E> { 37 @Override 38 public boolean dropVertex(Vertex<I, V, E> vertex) { 39 return false; 40 } 41 }