/***********************************************************************************************************************
*
* Copyright (C) 2010-2013 by the Stratosphere project (http://stratosphere.eu)
*
* Licensed 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 eu.stratosphere.test.iterative;
import java.util.ArrayList;
import java.util.List;
import org.junit.Assert;
import eu.stratosphere.api.java.DataSet;
import eu.stratosphere.api.java.ExecutionEnvironment;
import eu.stratosphere.api.java.io.LocalCollectionOutputFormat;
import eu.stratosphere.api.java.tuple.Tuple2;
import eu.stratosphere.test.compiler.iterations.MultipleJoinsWithSolutionSetCompilerTest;
import eu.stratosphere.test.util.JavaProgramTestBase;
public class MultipleSolutionSetJoinsITCase extends JavaProgramTestBase {
@Override
protected void testProgram() throws Exception {
final int NUM_ITERS = 4;
final double expectedFactor = (int) Math.pow(7, NUM_ITERS);
// this is an artificial program, it does not compute anything sensical
ExecutionEnvironment env = ExecutionEnvironment.getExecutionEnvironment();
@SuppressWarnings("unchecked")
DataSet<Tuple2<Long, Double>> initialData = env.fromElements(new Tuple2<Long, Double>(1L, 1.0), new Tuple2<Long, Double>(2L, 2.0),
new Tuple2<Long, Double>(3L, 3.0), new Tuple2<Long, Double>(4L, 4.0),
new Tuple2<Long, Double>(5L, 5.0), new Tuple2<Long, Double>(6L, 6.0));
DataSet<Tuple2<Long, Double>> result = MultipleJoinsWithSolutionSetCompilerTest.constructPlan(initialData, NUM_ITERS);
List<Tuple2<Long, Double>> resultCollector = new ArrayList<Tuple2<Long,Double>>();
result.output(new LocalCollectionOutputFormat<Tuple2<Long,Double>>(resultCollector));
env.execute();
for (Tuple2<Long, Double> tuple : resultCollector) {
Assert.assertEquals(expectedFactor * tuple.f0, tuple.f1.doubleValue(), 0.0);
}
}
}