/*
* 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.io.FileNotFoundException;
import java.io.IOException;
import java.util.Collection;
import java.util.LinkedList;
import org.apache.flink.api.common.functions.FilterFunction;
import org.apache.flink.api.common.functions.RichFilterFunction;
import org.apache.flink.api.java.tuple.Tuple3;
import org.apache.flink.configuration.Configuration;
import org.apache.flink.test.javaApiOperators.util.CollectionDataSets;
import org.apache.flink.test.javaApiOperators.util.CollectionDataSets.CustomType;
import org.apache.flink.test.util.JavaProgramTestBase;
import org.junit.runner.RunWith;
import org.junit.runners.Parameterized;
import org.junit.runners.Parameterized.Parameters;
import org.apache.flink.api.java.DataSet;
import org.apache.flink.api.java.ExecutionEnvironment;
@RunWith(Parameterized.class)
public class FilterITCase extends JavaProgramTestBase {
private static int NUM_PROGRAMS = 8;
private int curProgId = config.getInteger("ProgramId", -1);
private String resultPath;
private String expectedResult;
public FilterITCase(Configuration config) {
super(config);
}
@Override
protected void preSubmit() throws Exception {
resultPath = getTempDirPath("result");
}
@Override
protected void testProgram() throws Exception {
expectedResult = FilterProgs.runProgram(curProgId, resultPath);
}
@Override
protected void postSubmit() throws Exception {
compareResultsByLinesInMemory(expectedResult, resultPath);
}
@Parameters
public static Collection<Object[]> getConfigurations() throws FileNotFoundException, IOException {
LinkedList<Configuration> tConfigs = new LinkedList<Configuration>();
for(int i=1; i <= NUM_PROGRAMS; i++) {
Configuration config = new Configuration();
config.setInteger("ProgramId", i);
tConfigs.add(config);
}
return toParameterList(tConfigs);
}
private static class FilterProgs {
public static String runProgram(int progId, String resultPath) throws Exception {
switch(progId) {
case 1: {
/*
* Test all-rejecting filter.
*/
final ExecutionEnvironment env = ExecutionEnvironment.getExecutionEnvironment();
DataSet<Tuple3<Integer, Long, String>> ds = CollectionDataSets.get3TupleDataSet(env);
DataSet<Tuple3<Integer, Long, String>> filterDs = ds.
filter(new FilterFunction<Tuple3<Integer,Long,String>>() {
private static final long serialVersionUID = 1L;
@Override
public boolean filter(Tuple3<Integer, Long, String> value) throws Exception {
return false;
}
});
filterDs.writeAsCsv(resultPath);
env.execute();
// return expected result
return "\n";
}
case 2: {
/*
* Test all-passing filter.
*/
final ExecutionEnvironment env = ExecutionEnvironment.getExecutionEnvironment();
DataSet<Tuple3<Integer, Long, String>> ds = CollectionDataSets.get3TupleDataSet(env);
DataSet<Tuple3<Integer, Long, String>> filterDs = ds.
filter(new FilterFunction<Tuple3<Integer,Long,String>>() {
private static final long serialVersionUID = 1L;
@Override
public boolean filter(Tuple3<Integer, Long, String> value) throws Exception {
return true;
}
});
filterDs.writeAsCsv(resultPath);
env.execute();
// return expected result
return "1,1,Hi\n" +
"2,2,Hello\n" +
"3,2,Hello world\n" +
"4,3,Hello world, how are you?\n" +
"5,3,I am fine.\n" +
"6,3,Luke Skywalker\n" +
"7,4,Comment#1\n" +
"8,4,Comment#2\n" +
"9,4,Comment#3\n" +
"10,4,Comment#4\n" +
"11,5,Comment#5\n" +
"12,5,Comment#6\n" +
"13,5,Comment#7\n" +
"14,5,Comment#8\n" +
"15,5,Comment#9\n" +
"16,6,Comment#10\n" +
"17,6,Comment#11\n" +
"18,6,Comment#12\n" +
"19,6,Comment#13\n" +
"20,6,Comment#14\n" +
"21,6,Comment#15\n";
}
case 3: {
/*
* Test filter on String tuple field.
*/
final ExecutionEnvironment env = ExecutionEnvironment.getExecutionEnvironment();
DataSet<Tuple3<Integer, Long, String>> ds = CollectionDataSets.get3TupleDataSet(env);
DataSet<Tuple3<Integer, Long, String>> filterDs = ds.
filter(new FilterFunction<Tuple3<Integer,Long,String>>() {
private static final long serialVersionUID = 1L;
@Override
public boolean filter(Tuple3<Integer, Long, String> value) throws Exception {
return value.f2.contains("world");
}
});
filterDs.writeAsCsv(resultPath);
env.execute();
// return expected result
return "3,2,Hello world\n" +
"4,3,Hello world, how are you?\n";
}
case 4: {
/*
* Test filter on Integer tuple field.
*/
final ExecutionEnvironment env = ExecutionEnvironment.getExecutionEnvironment();
DataSet<Tuple3<Integer, Long, String>> ds = CollectionDataSets.get3TupleDataSet(env);
DataSet<Tuple3<Integer, Long, String>> filterDs = ds.
filter(new FilterFunction<Tuple3<Integer,Long,String>>() {
private static final long serialVersionUID = 1L;
@Override
public boolean filter(Tuple3<Integer, Long, String> value) throws Exception {
return (value.f0 % 2) == 0;
}
});
filterDs.writeAsCsv(resultPath);
env.execute();
// return expected result
return "2,2,Hello\n" +
"4,3,Hello world, how are you?\n" +
"6,3,Luke Skywalker\n" +
"8,4,Comment#2\n" +
"10,4,Comment#4\n" +
"12,5,Comment#6\n" +
"14,5,Comment#8\n" +
"16,6,Comment#10\n" +
"18,6,Comment#12\n" +
"20,6,Comment#14\n";
}
case 5: {
/*
* Test filter on basic type
*/
final ExecutionEnvironment env = ExecutionEnvironment.getExecutionEnvironment();
DataSet<String> ds = CollectionDataSets.getStringDataSet(env);
DataSet<String> filterDs = ds.
filter(new FilterFunction<String>() {
private static final long serialVersionUID = 1L;
@Override
public boolean filter(String value) throws Exception {
return value.startsWith("H");
}
});
filterDs.writeAsText(resultPath);
env.execute();
// return expected result
return "Hi\n" +
"Hello\n" +
"Hello world\n" +
"Hello world, how are you?\n";
}
case 6: {
/*
* Test filter on custom type
*/
final ExecutionEnvironment env = ExecutionEnvironment.getExecutionEnvironment();
DataSet<CustomType> ds = CollectionDataSets.getCustomTypeDataSet(env);
DataSet<CustomType> filterDs = ds.
filter(new FilterFunction<CustomType>() {
private static final long serialVersionUID = 1L;
@Override
public boolean filter(CustomType value) throws Exception {
return value.myString.contains("a");
}
});
filterDs.writeAsText(resultPath);
env.execute();
// return expected result
return "3,3,Hello world, how are you?\n" +
"3,4,I am fine.\n" +
"3,5,Luke Skywalker\n";
}
case 7: {
/*
* Test filter on String tuple field.
*/
final ExecutionEnvironment env = ExecutionEnvironment.getExecutionEnvironment();
DataSet<Integer> ints = CollectionDataSets.getIntegerDataSet(env);
DataSet<Tuple3<Integer, Long, String>> ds = CollectionDataSets.get3TupleDataSet(env);
DataSet<Tuple3<Integer, Long, String>> filterDs = ds.
filter(new RichFilterFunction<Tuple3<Integer,Long,String>>() {
private static final long serialVersionUID = 1L;
int literal = -1;
@Override
public void open(Configuration config) {
Collection<Integer> ints = this.getRuntimeContext().getBroadcastVariable("ints");
for(int i: ints) {
literal = literal < i ? i : literal;
}
}
@Override
public boolean filter(Tuple3<Integer, Long, String> value) throws Exception {
return value.f0 < literal;
}
}).withBroadcastSet(ints, "ints");
filterDs.writeAsCsv(resultPath);
env.execute();
// return expected result
return "1,1,Hi\n" +
"2,2,Hello\n" +
"3,2,Hello world\n" +
"4,3,Hello world, how are you?\n";
}
case 8: {
/*
* Test filter with broadcast variables
*/
final ExecutionEnvironment env = ExecutionEnvironment.getExecutionEnvironment();
DataSet<Integer> intDs = CollectionDataSets.getIntegerDataSet(env);
DataSet<Tuple3<Integer, Long, String>> ds = CollectionDataSets.get3TupleDataSet(env);
DataSet<Tuple3<Integer, Long, String>> filterDs = ds.
filter(new RichFilterFunction<Tuple3<Integer,Long,String>>() {
private static final long serialVersionUID = 1L;
private int broadcastSum = 0;
@Override
public void open(Configuration config) {
Collection<Integer> ints = this.getRuntimeContext().getBroadcastVariable("ints");
for(Integer i : ints) {
broadcastSum += i;
}
}
@Override
public boolean filter(Tuple3<Integer, Long, String> value) throws Exception {
return (value.f1 == (broadcastSum / 11));
}
}).withBroadcastSet(intDs, "ints");
filterDs.writeAsCsv(resultPath);
env.execute();
// return expected result
return "11,5,Comment#5\n" +
"12,5,Comment#6\n" +
"13,5,Comment#7\n" +
"14,5,Comment#8\n" +
"15,5,Comment#9\n";
}
default:
throw new IllegalArgumentException("Invalid program id");
}
}
}
}