/*
* 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.io.Serializable;
import java.util.ArrayList;
import java.util.List;
import org.apache.flink.api.common.InvalidProgramException;
import org.apache.flink.api.common.operators.Order;
import org.apache.flink.api.common.typeinfo.BasicArrayTypeInfo;
import org.apache.flink.api.common.typeinfo.BasicTypeInfo;
import org.apache.flink.api.java.DataSet;
import org.apache.flink.api.java.ExecutionEnvironment;
import org.apache.flink.api.java.functions.KeySelector;
import org.apache.flink.api.java.tuple.Tuple2;
import org.apache.flink.api.java.tuple.Tuple4;
import org.apache.flink.api.java.tuple.Tuple5;
import org.apache.flink.api.java.typeutils.TupleTypeInfo;
import org.apache.flink.api.java.typeutils.TypeExtractor;
import org.junit.Assert;
import org.junit.Test;
public class GroupingTest {
// TUPLE DATA
private 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 final TupleTypeInfo<Tuple4<Integer, Long, CustomType, Long[]>> tupleWithCustomInfo = new
TupleTypeInfo<Tuple4<Integer, Long, CustomType, Long[]>>(
BasicTypeInfo.INT_TYPE_INFO,
BasicTypeInfo.LONG_TYPE_INFO,
TypeExtractor.createTypeInfo(CustomType.class),
BasicArrayTypeInfo.LONG_ARRAY_TYPE_INFO
);
// LONG DATA
private final List<Long> emptyLongData = new ArrayList<Long>();
private final List<CustomType> customTypeData = new ArrayList<CustomType>();
private final List<Tuple4<Integer, Long, CustomType, Long[]>> tupleWithCustomData =
new ArrayList<Tuple4<Integer, Long, CustomType, Long[]>>();
private final List<Tuple2<byte[], byte[]>> byteArrayData = new ArrayList<Tuple2<byte[], byte[]>>();
@Test
public void testGroupByKeyFields1() {
final ExecutionEnvironment env = ExecutionEnvironment.getExecutionEnvironment();
DataSet<Tuple5<Integer, Long, String, Long, Integer>> tupleDs = env.fromCollection(emptyTupleData, tupleTypeInfo);
// should work
try {
tupleDs.groupBy(0);
} catch(Exception e) {
Assert.fail();
}
}
@Test(expected = InvalidProgramException.class)
public void testGroupByKeyFields2() {
final ExecutionEnvironment env = ExecutionEnvironment.getExecutionEnvironment();
DataSet<Long> longDs = env.fromCollection(emptyLongData, BasicTypeInfo.LONG_TYPE_INFO);
// should not work: groups on basic type
longDs.groupBy(0);
}
@Test(expected = InvalidProgramException.class)
public void testGroupByKeyFields3() {
final ExecutionEnvironment env = ExecutionEnvironment.getExecutionEnvironment();
this.customTypeData.add(new CustomType());
DataSet<CustomType> customDs = env.fromCollection(customTypeData);
// should not work: groups on custom type
customDs.groupBy(0);
}
@Test(expected = IndexOutOfBoundsException.class)
public void testGroupByKeyFields4() {
final ExecutionEnvironment env = ExecutionEnvironment.getExecutionEnvironment();
DataSet<Tuple5<Integer, Long, String, Long, Integer>> tupleDs = env.fromCollection(emptyTupleData, tupleTypeInfo);
// should not work, key out of tuple bounds
tupleDs.groupBy(5);
}
@Test(expected = IndexOutOfBoundsException.class)
public void testGroupByKeyFields5() {
final ExecutionEnvironment env = ExecutionEnvironment.getExecutionEnvironment();
DataSet<Tuple5<Integer, Long, String, Long, Integer>> tupleDs = env.fromCollection(emptyTupleData, tupleTypeInfo);
// should not work, negative field position
tupleDs.groupBy(-1);
}
@Test
public void testGroupByKeyFieldsOnPrimitiveArray() {
this.byteArrayData.add(new Tuple2(new byte[]{0}, new byte[]{1}));
final ExecutionEnvironment env = ExecutionEnvironment.getExecutionEnvironment();
DataSet<Tuple2<byte[], byte[]>> tupleDs = env.fromCollection(byteArrayData);
tupleDs.groupBy(0);
}
@Test
public void testGroupByKeyExpressions1() {
final ExecutionEnvironment env = ExecutionEnvironment.getExecutionEnvironment();
this.customTypeData.add(new CustomType());
DataSet<CustomType> ds = env.fromCollection(customTypeData);
// should work
try {
ds.groupBy("myInt");
} catch(Exception e) {
Assert.fail();
}
}
@Test(expected = InvalidProgramException.class)
public void testGroupByKeyExpressions2() {
final ExecutionEnvironment env = ExecutionEnvironment.getExecutionEnvironment();
DataSet<Long> longDs = env.fromCollection(emptyLongData, BasicTypeInfo.LONG_TYPE_INFO);
// should not work: groups on basic type
longDs.groupBy("myInt");
}
@Test(expected = InvalidProgramException.class)
public void testGroupByKeyExpressions3() {
final ExecutionEnvironment env = ExecutionEnvironment.getExecutionEnvironment();
this.customTypeData.add(new CustomType());
DataSet<CustomType> customDs = env.fromCollection(customTypeData);
// should not work: tuple selector on custom type
customDs.groupBy(0);
}
@Test(expected = IllegalArgumentException.class)
public void testGroupByKeyExpressions4() {
final ExecutionEnvironment env = ExecutionEnvironment.getExecutionEnvironment();
DataSet<CustomType> ds = env.fromCollection(customTypeData);
// should not work, key out of tuple bounds
ds.groupBy("myNonExistent");
}
@Test
public void testGroupByKeyExpressions1Nested() {
final ExecutionEnvironment env = ExecutionEnvironment.getExecutionEnvironment();
this.customTypeData.add(new CustomType());
DataSet<CustomType> ds = env.fromCollection(customTypeData);
// should work
try {
ds.groupBy("nested.myInt");
} catch(Exception e) {
Assert.fail();
}
}
@Test(expected = IllegalArgumentException.class)
public void testGroupByKeyExpressions2Nested() {
final ExecutionEnvironment env = ExecutionEnvironment.getExecutionEnvironment();
DataSet<CustomType> ds = env.fromCollection(customTypeData);
// should not work, key out of tuple bounds
ds.groupBy("nested.myNonExistent");
}
@Test
@SuppressWarnings("serial")
public void testGroupByKeySelector1() {
final ExecutionEnvironment env = ExecutionEnvironment.getExecutionEnvironment();
this.customTypeData.add(new CustomType());
try {
DataSet<CustomType> customDs = env.fromCollection(customTypeData);
// should work
customDs.groupBy(
new KeySelector<GroupingTest.CustomType, Long>() {
@Override
public Long getKey(CustomType value) {
return value.myLong;
}
});
} catch(Exception e) {
Assert.fail();
}
}
@Test
@SuppressWarnings("serial")
public void testGroupByKeySelector2() {
final ExecutionEnvironment env = ExecutionEnvironment.getExecutionEnvironment();
this.customTypeData.add(new CustomType());
try {
DataSet<CustomType> customDs = env.fromCollection(customTypeData);
// should work
customDs.groupBy(
new KeySelector<GroupingTest.CustomType, Tuple2<Integer, Long>>() {
@Override
public Tuple2<Integer,Long> getKey(CustomType value) {
return new Tuple2<Integer, Long>(value.myInt, value.myLong);
}
});
} catch(Exception e) {
Assert.fail();
}
}
@Test
@SuppressWarnings("serial")
public void testGroupByKeySelector3() {
final ExecutionEnvironment env = ExecutionEnvironment.getExecutionEnvironment();
this.customTypeData.add(new CustomType());
try {
DataSet<CustomType> customDs = env.fromCollection(customTypeData);
// should not work
customDs.groupBy(
new KeySelector<GroupingTest.CustomType, CustomType>() {
@Override
public CustomType getKey(CustomType value) {
return value;
}
});
} catch(Exception e) {
Assert.fail();
}
}
@Test
@SuppressWarnings("serial")
public void testGroupByKeySelector4() {
final ExecutionEnvironment env = ExecutionEnvironment.getExecutionEnvironment();
this.customTypeData.add(new CustomType());
try {
DataSet<CustomType> customDs = env.fromCollection(customTypeData);
// should not work
customDs.groupBy(
new KeySelector<GroupingTest.CustomType, Tuple2<Integer, GroupingTest.CustomType>>() {
@Override
public Tuple2<Integer, CustomType> getKey(CustomType value) {
return new Tuple2<Integer, CustomType>(value.myInt, value);
}
});
} catch(Exception e) {
Assert.fail();
}
}
@Test(expected = InvalidProgramException.class)
@SuppressWarnings("serial")
public void testGroupByKeySelector5() {
final ExecutionEnvironment env = ExecutionEnvironment.getExecutionEnvironment();
this.customTypeData.add(new CustomType());
DataSet<CustomType> customDs = env.fromCollection(customTypeData);
// should not work
customDs.groupBy(
new KeySelector<GroupingTest.CustomType, CustomType2>() {
@Override
public CustomType2 getKey(CustomType value) {
return new CustomType2();
}
});
}
@Test
public void testGroupSortKeyFields1() {
final ExecutionEnvironment env = ExecutionEnvironment.getExecutionEnvironment();
DataSet<Tuple5<Integer, Long, String, Long, Integer>> tupleDs = env.fromCollection(emptyTupleData, tupleTypeInfo);
// should work
try {
tupleDs.groupBy(0).sortGroup(0, Order.ASCENDING);
} catch(Exception e) {
Assert.fail();
}
}
@Test(expected = IndexOutOfBoundsException.class)
public void testGroupSortKeyFields2() {
final ExecutionEnvironment env = ExecutionEnvironment.getExecutionEnvironment();
DataSet<Tuple5<Integer, Long, String, Long, Integer>> tupleDs = env.fromCollection(emptyTupleData, tupleTypeInfo);
// should not work, field index out of bounds
tupleDs.groupBy(0).sortGroup(5, Order.ASCENDING);
}
@Test(expected = InvalidProgramException.class)
public void testGroupSortKeyFields3() {
final ExecutionEnvironment env = ExecutionEnvironment.getExecutionEnvironment();
DataSet<Long> longDs = env.fromCollection(emptyLongData, BasicTypeInfo.LONG_TYPE_INFO);
// should not work: sorted groups on groupings by key selectors
longDs.groupBy(new KeySelector<Long, Long>() {
private static final long serialVersionUID = 1L;
@Override
public Long getKey(Long value) {
return value;
}
}).sortGroup(0, Order.ASCENDING);
}
@Test(expected = InvalidProgramException.class)
public void testGroupSortKeyFields4() {
final ExecutionEnvironment env = ExecutionEnvironment.getExecutionEnvironment();
DataSet<Tuple4<Integer, Long, CustomType, Long[]>> tupleDs =
env.fromCollection(tupleWithCustomData, tupleWithCustomInfo);
// should not work
tupleDs.groupBy(0)
.sortGroup(2, Order.ASCENDING);
}
@Test(expected = InvalidProgramException.class)
public void testGroupSortKeyFields5() {
final ExecutionEnvironment env = ExecutionEnvironment.getExecutionEnvironment();
DataSet<Tuple4<Integer, Long, CustomType, Long[]>> tupleDs =
env.fromCollection(tupleWithCustomData, tupleWithCustomInfo);
// should not work
tupleDs.groupBy(0)
.sortGroup(3, Order.ASCENDING);
}
@Test
public void testChainedGroupSortKeyFields() {
final ExecutionEnvironment env = ExecutionEnvironment.getExecutionEnvironment();
DataSet<Tuple5<Integer, Long, String, Long, Integer>> tupleDs = env.fromCollection(emptyTupleData, tupleTypeInfo);
// should work
try {
tupleDs.groupBy(0).sortGroup(0, Order.ASCENDING).sortGroup(2, Order.DESCENDING);
} catch(Exception e) {
Assert.fail();
}
}
@Test
public void testGroupSortByKeyExpression1() {
final ExecutionEnvironment env = ExecutionEnvironment.getExecutionEnvironment();
DataSet<Tuple4<Integer, Long, CustomType, Long[]>> tupleDs =
env.fromCollection(tupleWithCustomData, tupleWithCustomInfo);
// should work
try {
tupleDs.groupBy("f0").sortGroup("f1", Order.ASCENDING);
} catch(Exception e) {
Assert.fail();
}
}
@Test
public void testGroupSortByKeyExpression2() {
final ExecutionEnvironment env = ExecutionEnvironment.getExecutionEnvironment();
DataSet<Tuple4<Integer, Long, CustomType, Long[]>> tupleDs =
env.fromCollection(tupleWithCustomData, tupleWithCustomInfo);
// should work
try {
tupleDs.groupBy("f0").sortGroup("f2.myString", Order.ASCENDING);
} catch(Exception e) {
Assert.fail();
}
}
@Test
public void testGroupSortByKeyExpression3() {
final ExecutionEnvironment env = ExecutionEnvironment.getExecutionEnvironment();
DataSet<Tuple4<Integer, Long, CustomType, Long[]>> tupleDs =
env.fromCollection(tupleWithCustomData, tupleWithCustomInfo);
// should work
try {
tupleDs.groupBy("f0")
.sortGroup("f2.myString", Order.ASCENDING)
.sortGroup("f1", Order.DESCENDING);
} catch(Exception e) {
Assert.fail();
}
}
@Test(expected = InvalidProgramException.class)
public void testGroupSortByKeyExpression4() {
final ExecutionEnvironment env = ExecutionEnvironment.getExecutionEnvironment();
DataSet<Tuple4<Integer, Long, CustomType, Long[]>> tupleDs =
env.fromCollection(tupleWithCustomData, tupleWithCustomInfo);
// should not work
tupleDs.groupBy("f0")
.sortGroup("f2", Order.ASCENDING);
}
@Test(expected = InvalidProgramException.class)
public void testGroupSortByKeyExpression5() {
final ExecutionEnvironment env = ExecutionEnvironment.getExecutionEnvironment();
DataSet<Tuple4<Integer, Long, CustomType, Long[]>> tupleDs =
env.fromCollection(tupleWithCustomData, tupleWithCustomInfo);
// should not work
tupleDs.groupBy("f0")
.sortGroup("f1", Order.ASCENDING)
.sortGroup("f2", Order.ASCENDING);
}
@Test(expected = InvalidProgramException.class)
public void testGroupSortByKeyExpression6() {
final ExecutionEnvironment env = ExecutionEnvironment.getExecutionEnvironment();
DataSet<Tuple4<Integer, Long, CustomType, Long[]>> tupleDs =
env.fromCollection(tupleWithCustomData, tupleWithCustomInfo);
// should not work
tupleDs.groupBy("f0")
.sortGroup("f3", Order.ASCENDING);
}
@SuppressWarnings("serial")
@Test
public void testGroupSortByKeySelector1() {
final ExecutionEnvironment env = ExecutionEnvironment.getExecutionEnvironment();
DataSet<Tuple4<Integer, Long, CustomType, Long[]>> tupleDs =
env.fromCollection(tupleWithCustomData, tupleWithCustomInfo);
// should not work
tupleDs.groupBy(
new KeySelector<Tuple4<Integer,Long,CustomType,Long[]>, Long>() {
@Override
public Long getKey(Tuple4<Integer, Long, CustomType, Long[]> value) throws Exception {
return value.f1;
}
})
.sortGroup(
new KeySelector<Tuple4<Integer, Long, CustomType, Long[]>, Integer>() {
@Override
public Integer getKey(Tuple4<Integer, Long, CustomType, Long[]> value) throws Exception {
return value.f0;
}
}, Order.ASCENDING);
}
@SuppressWarnings("serial")
@Test(expected = InvalidProgramException.class)
public void testGroupSortByKeySelector2() {
final ExecutionEnvironment env = ExecutionEnvironment.getExecutionEnvironment();
DataSet<Tuple4<Integer, Long, CustomType, Long[]>> tupleDs =
env.fromCollection(tupleWithCustomData, tupleWithCustomInfo);
// should not work
tupleDs.groupBy(
new KeySelector<Tuple4<Integer,Long,CustomType,Long[]>, Long>() {
@Override
public Long getKey(Tuple4<Integer, Long, CustomType, Long[]> value) throws Exception {
return value.f1;
}
})
.sortGroup(
new KeySelector<Tuple4<Integer, Long, CustomType, Long[]>, CustomType>() {
@Override
public CustomType getKey(Tuple4<Integer, Long, CustomType, Long[]> value) throws Exception {
return value.f2;
}
}, Order.ASCENDING);
}
@SuppressWarnings("serial")
@Test(expected = InvalidProgramException.class)
public void testGroupSortByKeySelector3() {
final ExecutionEnvironment env = ExecutionEnvironment.getExecutionEnvironment();
DataSet<Tuple4<Integer, Long, CustomType, Long[]>> tupleDs =
env.fromCollection(tupleWithCustomData, tupleWithCustomInfo);
// should not work
tupleDs.groupBy(
new KeySelector<Tuple4<Integer,Long,CustomType,Long[]>, Long>() {
@Override
public Long getKey(Tuple4<Integer, Long, CustomType, Long[]> value) throws Exception {
return value.f1;
}
})
.sortGroup(
new KeySelector<Tuple4<Integer, Long, CustomType, Long[]>, Long[]>() {
@Override
public Long[] getKey(Tuple4<Integer, Long, CustomType, Long[]> value) throws Exception {
return value.f3;
}
}, Order.ASCENDING);
}
@Test
public void testGroupingAtomicType() {
final ExecutionEnvironment env = ExecutionEnvironment.getExecutionEnvironment();
DataSet<Integer> dataSet = env.fromElements(0, 1, 1, 2, 0, 0);
dataSet.groupBy("*");
}
@Test(expected = InvalidProgramException.class)
public void testGroupAtomicTypeWithInvalid1() {
final ExecutionEnvironment env = ExecutionEnvironment.getExecutionEnvironment();
DataSet<Integer> dataSet = env.fromElements(0, 1, 2, 3);
dataSet.groupBy("*", "invalidField");
}
@Test(expected = InvalidProgramException.class)
public void testGroupAtomicTypeWithInvalid2() {
final ExecutionEnvironment env = ExecutionEnvironment.getExecutionEnvironment();
DataSet<Integer> dataSet = env.fromElements(0, 1, 2, 3);
dataSet.groupBy("invalidField");
}
@Test(expected = InvalidProgramException.class)
public void testGroupAtomicTypeWithInvalid3() {
final ExecutionEnvironment env = ExecutionEnvironment.getExecutionEnvironment();
DataSet<ArrayList<Integer>> dataSet = env.fromElements(new ArrayList<Integer>());
dataSet.groupBy("*");
}
public static class CustomType implements Serializable {
public static class Nest {
public int myInt;
}
private static final long serialVersionUID = 1L;
public int myInt;
public long myLong;
public String myString;
public Nest nested;
public CustomType() {}
public CustomType(int i, long l, String s) {
myInt = i;
myLong = l;
myString = s;
}
@Override
public String toString() {
return myInt+","+myLong+","+myString;
}
}
public static class CustomType2 implements Serializable {
public int myInt;
public Integer[] myIntArray;
}
}