/*
* 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.flink.examples.java.graph.util;
import java.util.ArrayList;
import java.util.List;
import org.apache.flink.api.java.DataSet;
import org.apache.flink.api.java.ExecutionEnvironment;
import org.apache.flink.api.java.tuple.Tuple2;
/**
* Provides the default data sets used for the PageRank example program.
* The default data sets are used, if no parameters are given to the program.
*
*/
public class PageRankData {
public static final Object[][] EDGES = {
{1L, 2L},
{1L, 15L},
{2L, 3L},
{2L, 4L},
{2L, 5L},
{2L, 6L},
{2L, 7L},
{3L, 13L},
{4L, 2L},
{5L, 11L},
{5L, 12L},
{6L, 1L},
{6L, 7L},
{6L, 8L},
{7L, 1L},
{7L, 8L},
{8L, 1L},
{8L, 9L},
{8L, 10L},
{9L, 14L},
{9L, 1L},
{10L, 1L},
{10L, 13L},
{11L, 12L},
{11L, 1L},
{12L, 1L},
{13L, 14L},
{14L, 12L},
{15L, 1L},
};
private static int numPages = 15;
public static DataSet<Tuple2<Long, Long>> getDefaultEdgeDataSet(ExecutionEnvironment env) {
List<Tuple2<Long, Long>> edges = new ArrayList<Tuple2<Long, Long>>();
for(Object[] e : EDGES) {
edges.add(new Tuple2<Long, Long>((Long)e[0], (Long)e[1]));
}
return env.fromCollection(edges);
}
public static DataSet<Long> getDefaultPagesDataSet(ExecutionEnvironment env) {
return env.generateSequence(1, 15);
}
public static int getNumberOfPages() {
return numPages;
}
}