1/*2 * Licensed to the Apache Software Foundation (ASF) under one3 * or more contributor license agreements. See the NOTICE file4 * distributed with this work for additional information5 * regarding copyright ownership. The ASF licenses this file6 * to you under the Apache License, Version 2.0 (the7 * "License"); you may not use this file except in compliance8 * with the License. You may obtain a copy of the License at9 *10 * http://www.apache.org/licenses/LICENSE-2.011 *12 * Unless required by applicable law or agreed to in writing, software13 * 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 and16 * limitations under the License.17 */1819package org.apache.giraph.io.formats;
2021import org.apache.giraph.bsp.BspInputSplit;
22import org.apache.giraph.io.VertexInputFormat;
23import org.apache.hadoop.conf.Configuration;
24import org.apache.hadoop.io.Writable;
25import org.apache.hadoop.io.WritableComparable;
26import org.apache.hadoop.mapreduce.InputSplit;
27import org.apache.hadoop.mapreduce.JobContext;
2829import java.io.IOException;
30import java.util.ArrayList;
31import java.util.List;
3233/**34 * This VertexInputFormat is meant for testing/debugging. It simply generates35 * some vertex data that can be consumed by test applications.36 *37 * @param <I> Vertex id38 * @param <V> Vertex data39 * @param <E> Edge data40 */41 @SuppressWarnings("rawtypes")
42publicabstractclass GeneratedVertexInputFormat<
43 I extends WritableComparable, V extends Writable, E extends Writable>
44extends VertexInputFormat<I, V, E> {
45 @Override publicvoid checkInputSpecs(Configuration conf) { }
4647 @Override
48public List<InputSplit> getSplits(JobContext context, int minSplitCountHint)
49throws IOException, InterruptedException {
50// This is meaningless, the VertexReader will generate all the test51// data.52 List<InputSplit> inputSplitList = new ArrayList<InputSplit>();
53for (int i = 0; i < minSplitCountHint; ++i) {
54 inputSplitList.add(newBspInputSplit(i, minSplitCountHint));
55 }
56return inputSplitList;
57 }
58 }