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24 changes: 24 additions & 0 deletions
24
presto-main/src/main/java/io/prestosql/operator/aggregation/state/BooleanDistinctState.java
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|---|---|---|
| @@ -0,0 +1,24 @@ | ||
| /* | ||
| * Licensed 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 io.prestosql.operator.aggregation.state; | ||
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| import io.prestosql.spi.function.AccumulatorState; | ||
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| public interface BooleanDistinctState | ||
| extends AccumulatorState | ||
| { | ||
| byte getByte(); | ||
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| void setByte(byte value); | ||
| } |
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90 changes: 90 additions & 0 deletions
90
.../src/test/java/io/prestosql/operator/aggregation/TestApproximateCountDistinctBoolean.java
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| Original file line number | Diff line number | Diff line change |
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| @@ -0,0 +1,90 @@ | ||
| /* | ||
| * Licensed 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 io.prestosql.operator.aggregation; | ||
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| import com.google.common.collect.ImmutableList; | ||
| import com.google.common.collect.ImmutableSet; | ||
| import com.google.common.primitives.Booleans; | ||
| import io.prestosql.metadata.Signature; | ||
| import io.prestosql.spi.type.Type; | ||
| import org.testng.annotations.DataProvider; | ||
| import org.testng.annotations.Test; | ||
|
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| import java.util.List; | ||
| import java.util.concurrent.ThreadLocalRandom; | ||
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| import static io.prestosql.metadata.FunctionKind.AGGREGATE; | ||
| import static io.prestosql.spi.type.BigintType.BIGINT; | ||
| import static io.prestosql.spi.type.BooleanType.BOOLEAN; | ||
| import static io.prestosql.spi.type.DoubleType.DOUBLE; | ||
|
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| public class TestApproximateCountDistinctBoolean | ||
| extends AbstractTestApproximateCountDistinct | ||
| { | ||
| @Override | ||
| public InternalAggregationFunction getAggregationFunction() | ||
| { | ||
| return metadata.getFunctionRegistry().getAggregateFunctionImplementation( | ||
| new Signature("approx_distinct", AGGREGATE, BIGINT.getTypeSignature(), BOOLEAN.getTypeSignature(), DOUBLE.getTypeSignature())); | ||
| } | ||
|
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| @Override | ||
| public Type getValueType() | ||
| { | ||
| return BOOLEAN; | ||
| } | ||
|
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| @Override | ||
| public Object randomValue() | ||
| { | ||
| return ThreadLocalRandom.current().nextBoolean(); | ||
| } | ||
|
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| @DataProvider(name = "inputSequences") | ||
| public Object[][] inputSequences() | ||
| { | ||
| return new Object[][] { | ||
| {true}, | ||
| {false}, | ||
| {true, false}, | ||
| {true, true, true}, | ||
| {false, false, false}, | ||
| {true, false, true, false}, | ||
| }; | ||
| } | ||
|
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| @Test(dataProvider = "inputSequences") | ||
| public void testNonEmptyInputs(boolean... inputSequence) | ||
| { | ||
| List<Boolean> values = Booleans.asList(inputSequence); | ||
| assertCount(values, 0, distinctCount(values)); | ||
| } | ||
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| @Test | ||
| public void testNoInput() | ||
| { | ||
| assertCount(ImmutableList.of(), 0, 0); | ||
| } | ||
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| private long distinctCount(List<Boolean> inputSequence) | ||
| { | ||
| return ImmutableSet.copyOf(inputSequence).size(); | ||
| } | ||
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| @Override | ||
| protected int getUniqueValuesCount() | ||
| { | ||
| return 2; | ||
| } | ||
| } |