io.trino.operator.aggregation.MapAggregationState 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.spi.block.Block;
import io.trino.spi.block.MapBlockBuilder;
import io.trino.spi.block.SqlMap;
import io.trino.spi.block.ValueBlock;
import io.trino.spi.function.AccumulatorState;
import io.trino.spi.function.AccumulatorStateMetadata;
@AccumulatorStateMetadata(
stateFactoryClass = MapAggregationStateFactory.class,
stateSerializerClass = MapAggregationStateSerializer.class,
typeParameters = {"K", "V"},
serializedType = "map(K, V)")
public interface MapAggregationState
extends AccumulatorState
{
void add(ValueBlock keyBlock, int keyPosition, ValueBlock valueBlock, int valuePosition);
default void merge(MapAggregationState other)
{
SqlMap serializedState = ((SingleMapAggregationState) other).removeTempSerializedState();
int rawOffset = serializedState.getRawOffset();
Block rawKeyBlock = serializedState.getRawKeyBlock();
Block rawValueBlock = serializedState.getRawValueBlock();
ValueBlock rawKeyValues = rawKeyBlock.getUnderlyingValueBlock();
ValueBlock rawValueValues = rawValueBlock.getUnderlyingValueBlock();
for (int i = 0; i < serializedState.getSize(); i++) {
add(rawKeyValues, rawKeyBlock.getUnderlyingValuePosition(rawOffset + i), rawValueValues, rawValueBlock.getUnderlyingValuePosition(rawOffset + i));
}
}
void writeAll(MapBlockBuilder out);
}