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* Licensed to the Apache Software Foundation (ASF) under one
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* 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,
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* See the License for the specific language governing permissions and
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package org.apache.flink.graph.asm.degree.annotate.undirected;
import org.apache.flink.api.java.DataSet;
import org.apache.flink.api.java.tuple.Tuple2;
import org.apache.flink.graph.Edge;
import org.apache.flink.graph.asm.AsmTestBase;
import org.apache.flink.graph.asm.dataset.ChecksumHashCode;
import org.apache.flink.graph.asm.dataset.ChecksumHashCode.Checksum;
import org.apache.flink.test.util.TestBaseUtils;
import org.apache.flink.types.IntValue;
import org.apache.flink.types.LongValue;
import org.apache.flink.types.NullValue;
import org.junit.Test;
import static org.junit.Assert.assertEquals;
public class EdgeTargetDegreeTest
extends AsmTestBase {
@Test
public void testWithSimpleGraph()
throws Exception {
String expectedResult =
"(0,1,((null),3))\n" +
"(0,2,((null),3))\n" +
"(1,0,((null),2))\n" +
"(1,2,((null),3))\n" +
"(1,3,((null),4))\n" +
"(2,0,((null),2))\n" +
"(2,1,((null),3))\n" +
"(2,3,((null),4))\n" +
"(3,1,((null),3))\n" +
"(3,2,((null),3))\n" +
"(3,4,((null),1))\n" +
"(3,5,((null),1))\n" +
"(4,3,((null),4))\n" +
"(5,3,((null),4))";
DataSet<Edge<IntValue, Tuple2<NullValue, LongValue>>> targetDegreeOnTargetId = undirectedSimpleGraph
.run(new EdgeTargetDegree<IntValue, NullValue, NullValue>());
TestBaseUtils.compareResultAsText(targetDegreeOnTargetId.collect(), expectedResult);
DataSet<Edge<IntValue, Tuple2<NullValue, LongValue>>> targetDegreeOnSourceId = undirectedSimpleGraph
.run(new EdgeTargetDegree<IntValue, NullValue, NullValue>()
.setReduceOnSourceId(true));
TestBaseUtils.compareResultAsText(targetDegreeOnSourceId.collect(), expectedResult);
}
@Test
public void testWithRMatGraph()
throws Exception {
DataSet<Edge<LongValue, Tuple2<NullValue, LongValue>>> targetDegreeOnTargetId = undirectedRMatGraph(10, 16)
.run(new EdgeSourceDegree<LongValue, NullValue, NullValue>());
Checksum checksumOnTargetId = new ChecksumHashCode<Edge<LongValue, Tuple2<NullValue, LongValue>>>()
.run(targetDegreeOnTargetId)
.execute();
assertEquals(20884, checksumOnTargetId.getCount());
assertEquals(0x000000019d8f0070L, checksumOnTargetId.getChecksum());
DataSet<Edge<LongValue, Tuple2<NullValue, LongValue>>> targetDegreeOnSourceId = undirectedRMatGraph(10, 16)
.run(new EdgeTargetDegree<LongValue, NullValue, NullValue>()
.setReduceOnSourceId(true));
Checksum checksumOnSourceId = new ChecksumHashCode<Edge<LongValue, Tuple2<NullValue, LongValue>>>()
.run(targetDegreeOnSourceId)
.execute();
assertEquals(checksumOnTargetId, checksumOnSourceId);
}
}