/*
* 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.formats;
import org.apache.giraph.bsp.BspInputSplit;
import org.apache.giraph.io.VertexInputFormat;
import org.apache.hadoop.io.Writable;
import org.apache.hadoop.io.WritableComparable;
import org.apache.hadoop.mapreduce.InputSplit;
import org.apache.hadoop.mapreduce.JobContext;
import java.io.IOException;
import java.util.ArrayList;
import java.util.List;
/**
* This VertexInputFormat is meant for testing/debugging. It simply generates
* some vertex data that can be consumed by test applications.
*
* @param <I> Vertex id
* @param <V> Vertex data
* @param <E> Edge data
*/
@SuppressWarnings("rawtypes")
public abstract class GeneratedVertexInputFormat<
I extends WritableComparable, V extends Writable, E extends Writable>
extends VertexInputFormat<I, V, E> {
@Override
public List<InputSplit> getSplits(JobContext context, int minSplitCountHint)
throws IOException, InterruptedException {
// This is meaningless, the VertexReader will generate all the test
// data.
List<InputSplit> inputSplitList = new ArrayList<InputSplit>();
for (int i = 0; i < minSplitCountHint; ++i) {
inputSplitList.add(new BspInputSplit(i, minSplitCountHint));
}
return inputSplitList;
}
}