/*
* 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.javaApiOperators;
import java.util.List;
import org.apache.flink.api.java.tuple.Tuple3;
import org.apache.flink.api.java.tuple.Tuple5;
import org.apache.flink.test.javaApiOperators.util.CollectionDataSets;
import org.apache.flink.test.util.JavaProgramTestBase;
import org.apache.flink.api.java.DataSet;
import org.apache.flink.api.java.ExecutionEnvironment;
public class ProjectITCase extends JavaProgramTestBase {
@Override
protected void testProgram() throws Exception {
/*
* Projection with tuple fields indexes
*/
final ExecutionEnvironment env = ExecutionEnvironment.getExecutionEnvironment();
DataSet<Tuple5<Integer, Long, Integer, String, Long>> ds = CollectionDataSets.get5TupleDataSet(env);
DataSet<Tuple3<String, Long, Integer>> projDs = ds.
project(3,4,2);
List<Tuple3<String, Long, Integer>> result = projDs.collect();
String expectedResult = "Hallo,1,0\n" +
"Hallo Welt,2,1\n" +
"Hallo Welt wie,1,2\n" +
"Hallo Welt wie gehts?,2,3\n" +
"ABC,2,4\n" +
"BCD,3,5\n" +
"CDE,2,6\n" +
"DEF,1,7\n" +
"EFG,1,8\n" +
"FGH,2,9\n" +
"GHI,1,10\n" +
"HIJ,3,11\n" +
"IJK,3,12\n" +
"JKL,2,13\n" +
"KLM,2,14\n";
compareResultAsTuples(result, expectedResult);
}
}