io.trino.operator.aggregation.SumDataSizeForStats Maven / Gradle / Ivy
/*
* 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.trino.operator.aggregation;
import io.trino.operator.aggregation.state.LongState;
import io.trino.spi.block.BlockBuilder;
import io.trino.spi.block.ValueBlock;
import io.trino.spi.function.AggregationFunction;
import io.trino.spi.function.AggregationState;
import io.trino.spi.function.BlockIndex;
import io.trino.spi.function.BlockPosition;
import io.trino.spi.function.CombineFunction;
import io.trino.spi.function.InputFunction;
import io.trino.spi.function.OutputFunction;
import io.trino.spi.function.SqlNullable;
import io.trino.spi.function.SqlType;
import io.trino.spi.function.TypeParameter;
import io.trino.spi.type.BigintType;
import io.trino.spi.type.StandardTypes;
@AggregationFunction(value = SumDataSizeForStats.NAME, hidden = true)
public final class SumDataSizeForStats
{
public static final String NAME = "$internal$sum_data_size_for_stats";
private SumDataSizeForStats() {}
@InputFunction
@TypeParameter("T")
public static void input(@AggregationState LongState state, @SqlNullable @BlockPosition @SqlType("T") ValueBlock block, @BlockIndex int index)
{
update(state, block.getEstimatedDataSizeForStats(index));
}
@CombineFunction
public static void combine(@AggregationState LongState state, @AggregationState LongState otherState)
{
update(state, otherState.getValue());
}
private static void update(LongState state, long size)
{
state.setValue(state.getValue() + size);
}
@OutputFunction(StandardTypes.BIGINT)
public static void output(@AggregationState LongState state, BlockBuilder out)
{
BigintType.BIGINT.writeLong(out, state.getValue());
}
}