| /* |
| * 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.test.operators; |
| |
| import org.apache.flink.api.java.DataSet; |
| import org.apache.flink.api.java.ExecutionEnvironment; |
| import org.apache.flink.api.java.tuple.Tuple1; |
| import org.apache.flink.api.java.tuple.Tuple2; |
| import org.apache.flink.api.java.tuple.Tuple3; |
| import org.apache.flink.test.operators.util.CollectionDataSets; |
| import org.apache.flink.test.util.MultipleProgramsTestBase; |
| |
| import org.junit.Test; |
| import org.junit.runner.RunWith; |
| import org.junit.runners.Parameterized; |
| |
| import java.util.List; |
| |
| /** |
| * Integration tests for {@link org.apache.flink.api.scala.GroupedDataSet#min} and {@link |
| * org.apache.flink.api.scala.GroupedDataSet#max}. |
| */ |
| @RunWith(Parameterized.class) |
| public class SumMinMaxITCase extends MultipleProgramsTestBase { |
| |
| public SumMinMaxITCase(TestExecutionMode mode) { |
| super(mode); |
| } |
| |
| @Test |
| public void testSumMaxAndProject() throws Exception { |
| final ExecutionEnvironment env = ExecutionEnvironment.getExecutionEnvironment(); |
| |
| DataSet<Tuple3<Integer, Long, String>> ds = CollectionDataSets.get3TupleDataSet(env); |
| DataSet<Tuple2<Integer, Long>> sumDs = ds.sum(0).andMax(1).project(0, 1); |
| |
| List<Tuple2<Integer, Long>> result = sumDs.collect(); |
| |
| String expected = "231,6\n"; |
| |
| compareResultAsTuples(result, expected); |
| } |
| |
| @Test |
| public void testGroupedAggregate() throws Exception { |
| /* |
| * Grouped Aggregate |
| */ |
| |
| final ExecutionEnvironment env = ExecutionEnvironment.getExecutionEnvironment(); |
| |
| DataSet<Tuple3<Integer, Long, String>> ds = CollectionDataSets.get3TupleDataSet(env); |
| DataSet<Tuple2<Long, Integer>> aggregateDs = ds.groupBy(1).sum(0).project(1, 0); |
| |
| List<Tuple2<Long, Integer>> result = aggregateDs.collect(); |
| |
| String expected = "1,1\n" + "2,5\n" + "3,15\n" + "4,34\n" + "5,65\n" + "6,111\n"; |
| |
| compareResultAsTuples(result, expected); |
| } |
| |
| @Test |
| public void testNestedAggregate() throws Exception { |
| /* |
| * Nested Aggregate |
| */ |
| |
| final ExecutionEnvironment env = ExecutionEnvironment.getExecutionEnvironment(); |
| |
| DataSet<Tuple3<Integer, Long, String>> ds = CollectionDataSets.get3TupleDataSet(env); |
| DataSet<Tuple1<Integer>> aggregateDs = ds.groupBy(1).min(0).min(0).project(0); |
| |
| List<Tuple1<Integer>> result = aggregateDs.collect(); |
| |
| String expected = "1\n"; |
| |
| compareResultAsTuples(result, expected); |
| } |
| } |