/*
* 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.api.java.operator;
import java.util.ArrayList;
import java.util.List;
import org.junit.Assert;
import org.apache.flink.api.common.InvalidProgramException;
import org.apache.flink.api.common.typeinfo.BasicTypeInfo;
import org.apache.flink.api.java.functions.KeySelector;
import org.apache.flink.api.java.tuple.Tuple5;
import org.apache.flink.api.java.typeutils.TupleTypeInfo;
import org.junit.BeforeClass;
import org.junit.Test;
import org.apache.flink.api.java.DataSet;
import org.apache.flink.api.java.ExecutionEnvironment;
import org.apache.flink.api.java.operator.JoinOperatorTest.CustomType;
@SuppressWarnings("serial")
public class CoGroupOperatorTest {
// TUPLE DATA
private static final List<Tuple5<Integer, Long, String, Long, Integer>> emptyTupleData =
new ArrayList<Tuple5<Integer, Long, String, Long, Integer>>();
private final TupleTypeInfo<Tuple5<Integer, Long, String, Long, Integer>> tupleTypeInfo = new
TupleTypeInfo<Tuple5<Integer, Long, String, Long, Integer>>(
BasicTypeInfo.INT_TYPE_INFO,
BasicTypeInfo.LONG_TYPE_INFO,
BasicTypeInfo.STRING_TYPE_INFO,
BasicTypeInfo.LONG_TYPE_INFO,
BasicTypeInfo.INT_TYPE_INFO
);
private static List<CustomType> customTypeData = new ArrayList<CustomType>();
@BeforeClass
public static void insertCustomData() {
customTypeData.add(new CustomType());
}
@Test
public void testCoGroupKeyFields1() {
final ExecutionEnvironment env = ExecutionEnvironment.getExecutionEnvironment();
DataSet<Tuple5<Integer, Long, String, Long, Integer>> ds1 = env.fromCollection(emptyTupleData, tupleTypeInfo);
DataSet<Tuple5<Integer, Long, String, Long, Integer>> ds2 = env.fromCollection(emptyTupleData, tupleTypeInfo);
// should work
try {
ds1.coGroup(ds2).where(0).equalTo(0);
} catch(Exception e) {
Assert.fail();
}
}
@Test(expected = InvalidProgramException.class)
public void testCoGroupKeyFields2() {
final ExecutionEnvironment env = ExecutionEnvironment.getExecutionEnvironment();
DataSet<Tuple5<Integer, Long, String, Long, Integer>> ds1 = env.fromCollection(emptyTupleData, tupleTypeInfo);
DataSet<Tuple5<Integer, Long, String, Long, Integer>> ds2 = env.fromCollection(emptyTupleData, tupleTypeInfo);
// should not work, incompatible cogroup key types
ds1.coGroup(ds2).where(0).equalTo(2);
}
@Test(expected = InvalidProgramException.class)
public void testCoGroupKeyFields3() {
final ExecutionEnvironment env = ExecutionEnvironment.getExecutionEnvironment();
DataSet<Tuple5<Integer, Long, String, Long, Integer>> ds1 = env.fromCollection(emptyTupleData, tupleTypeInfo);
DataSet<Tuple5<Integer, Long, String, Long, Integer>> ds2 = env.fromCollection(emptyTupleData, tupleTypeInfo);
// should not work, incompatible number of cogroup keys
ds1.coGroup(ds2).where(0,1).equalTo(2);
}
@Test(expected = IllegalArgumentException.class)
public void testCoGroupKeyFields4() {
final ExecutionEnvironment env = ExecutionEnvironment.getExecutionEnvironment();
DataSet<Tuple5<Integer, Long, String, Long, Integer>> ds1 = env.fromCollection(emptyTupleData, tupleTypeInfo);
DataSet<Tuple5<Integer, Long, String, Long, Integer>> ds2 = env.fromCollection(emptyTupleData, tupleTypeInfo);
// should not work, cogroup key out of range
ds1.coGroup(ds2).where(5).equalTo(0);
}
@Test(expected = IllegalArgumentException.class)
public void testCoGroupKeyFields5() {
final ExecutionEnvironment env = ExecutionEnvironment.getExecutionEnvironment();
DataSet<Tuple5<Integer, Long, String, Long, Integer>> ds1 = env.fromCollection(emptyTupleData, tupleTypeInfo);
DataSet<Tuple5<Integer, Long, String, Long, Integer>> ds2 = env.fromCollection(emptyTupleData, tupleTypeInfo);
// should not work, negative key field position
ds1.coGroup(ds2).where(-1).equalTo(-1);
}
@Test(expected = IllegalArgumentException.class)
public void testCoGroupKeyFields6() {
final ExecutionEnvironment env = ExecutionEnvironment.getExecutionEnvironment();
DataSet<Tuple5<Integer, Long, String, Long, Integer>> ds1 = env.fromCollection(emptyTupleData, tupleTypeInfo);
DataSet<CustomType> ds2 = env.fromCollection(customTypeData);
// should not work, cogroup key fields on custom type
ds1.coGroup(ds2).where(5).equalTo(0);
}
@Test
public void testCoGroupKeyExpressions1() {
final ExecutionEnvironment env = ExecutionEnvironment.getExecutionEnvironment();
DataSet<CustomType> ds1 = env.fromCollection(customTypeData);
DataSet<CustomType> ds2 = env.fromCollection(customTypeData);
// should work
try {
ds1.coGroup(ds2).where("myInt").equalTo("myInt");
} catch(Exception e) {
Assert.fail();
}
}
@Test(expected = InvalidProgramException.class)
public void testCoGroupKeyExpressions2() {
final ExecutionEnvironment env = ExecutionEnvironment.getExecutionEnvironment();
DataSet<CustomType> ds1 = env.fromCollection(customTypeData);
DataSet<CustomType> ds2 = env.fromCollection(customTypeData);
// should not work, incompatible cogroup key types
ds1.coGroup(ds2).where("myInt").equalTo("myString");
}
@Test(expected = InvalidProgramException.class)
public void testCoGroupKeyExpressions3() {
final ExecutionEnvironment env = ExecutionEnvironment.getExecutionEnvironment();
DataSet<CustomType> ds1 = env.fromCollection(customTypeData);
DataSet<CustomType> ds2 = env.fromCollection(customTypeData);
// should not work, incompatible number of cogroup keys
ds1.coGroup(ds2).where("myInt", "myString").equalTo("myString");
}
@Test(expected = IllegalArgumentException.class)
public void testCoGroupKeyExpressions4() {
final ExecutionEnvironment env = ExecutionEnvironment.getExecutionEnvironment();
DataSet<CustomType> ds1 = env.fromCollection(customTypeData);
DataSet<CustomType> ds2 = env.fromCollection(customTypeData);
// should not work, cogroup key non-existent
ds1.coGroup(ds2).where("myNonExistent").equalTo("myInt");
}
@Test
public void testCoGroupKeyExpressions1Nested() {
final ExecutionEnvironment env = ExecutionEnvironment.getExecutionEnvironment();
DataSet<CustomType> ds1 = env.fromCollection(customTypeData);
DataSet<CustomType> ds2 = env.fromCollection(customTypeData);
// should work
try {
ds1.coGroup(ds2).where("nested.myInt").equalTo("nested.myInt");
} catch(Exception e) {
e.printStackTrace();
Assert.fail();
}
}
@Test(expected = InvalidProgramException.class)
public void testCoGroupKeyExpressions2Nested() {
final ExecutionEnvironment env = ExecutionEnvironment.getExecutionEnvironment();
DataSet<CustomType> ds1 = env.fromCollection(customTypeData);
DataSet<CustomType> ds2 = env.fromCollection(customTypeData);
// should not work, incompatible cogroup key types
ds1.coGroup(ds2).where("nested.myInt").equalTo("nested.myString");
}
@Test(expected = InvalidProgramException.class)
public void testCoGroupKeyExpressions3Nested() {
final ExecutionEnvironment env = ExecutionEnvironment.getExecutionEnvironment();
DataSet<CustomType> ds1 = env.fromCollection(customTypeData);
DataSet<CustomType> ds2 = env.fromCollection(customTypeData);
// should not work, incompatible number of cogroup keys
ds1.coGroup(ds2).where("nested.myInt", "nested.myString").equalTo("nested.myString");
}
@Test(expected = IllegalArgumentException.class)
public void testCoGroupKeyExpressions4Nested() {
final ExecutionEnvironment env = ExecutionEnvironment.getExecutionEnvironment();
DataSet<CustomType> ds1 = env.fromCollection(customTypeData);
DataSet<CustomType> ds2 = env.fromCollection(customTypeData);
// should not work, cogroup key non-existent
ds1.coGroup(ds2).where("nested.myNonExistent").equalTo("nested.myInt");
}
@Test
public void testCoGroupKeySelectors1() {
final ExecutionEnvironment env = ExecutionEnvironment.getExecutionEnvironment();
DataSet<CustomType> ds1 = env.fromCollection(customTypeData);
DataSet<CustomType> ds2 = env.fromCollection(customTypeData);
// should work
try {
ds1.coGroup(ds2)
.where(
new KeySelector<CustomType, Long>() {
@Override
public Long getKey(CustomType value) {
return value.myLong;
}
}
)
.equalTo(
new KeySelector<CustomType, Long>() {
@Override
public Long getKey(CustomType value) {
return value.myLong;
}
}
);
} catch(Exception e) {
Assert.fail();
}
}
@Test
public void testCoGroupKeyMixing1() {
final ExecutionEnvironment env = ExecutionEnvironment.getExecutionEnvironment();
DataSet<CustomType> ds1 = env.fromCollection(customTypeData);
DataSet<Tuple5<Integer, Long, String, Long, Integer>> ds2 = env.fromCollection(emptyTupleData, tupleTypeInfo);
// should work
try {
ds1.coGroup(ds2)
.where(
new KeySelector<CustomType, Long>() {
@Override
public Long getKey(CustomType value) {
return value.myLong;
}
}
)
.equalTo(3);
} catch(Exception e) {
Assert.fail();
}
}
@Test
public void testCoGroupKeyMixing2() {
final ExecutionEnvironment env = ExecutionEnvironment.getExecutionEnvironment();
DataSet<Tuple5<Integer, Long, String, Long, Integer>> ds1 = env.fromCollection(emptyTupleData, tupleTypeInfo);
DataSet<CustomType> ds2 = env.fromCollection(customTypeData);
// should work
try {
ds1.coGroup(ds2)
.where(3)
.equalTo(
new KeySelector<CustomType, Long>() {
@Override
public Long getKey(CustomType value) {
return value.myLong;
}
}
);
} catch(Exception e) {
Assert.fail();
}
}
@Test(expected = InvalidProgramException.class)
public void testCoGroupKeyMixing3() {
final ExecutionEnvironment env = ExecutionEnvironment.getExecutionEnvironment();
DataSet<Tuple5<Integer, Long, String, Long, Integer>> ds1 = env.fromCollection(emptyTupleData, tupleTypeInfo);
DataSet<CustomType> ds2 = env.fromCollection(customTypeData);
// should not work, incompatible types
ds1.coGroup(ds2)
.where(2)
.equalTo(
new KeySelector<CustomType, Long>() {
@Override
public Long getKey(CustomType value) {
return value.myLong;
}
}
);
}
@Test(expected = InvalidProgramException.class)
public void testCoGroupKeyMixing4() {
final ExecutionEnvironment env = ExecutionEnvironment.getExecutionEnvironment();
DataSet<Tuple5<Integer, Long, String, Long, Integer>> ds1 = env.fromCollection(emptyTupleData, tupleTypeInfo);
DataSet<CustomType> ds2 = env.fromCollection(customTypeData);
// should not work, more than one key field position
ds1.coGroup(ds2)
.where(1,3)
.equalTo(
new KeySelector<CustomType, Long>() {
@Override
public Long getKey(CustomType value) {
return value.myLong;
}
}
);
}
}