io.trino.operator.aggregation.state.BlockPositionState 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.state;
import io.trino.spi.block.Block;
import io.trino.spi.block.BlockBuilder;
import io.trino.spi.function.AccumulatorState;
import io.trino.spi.function.AccumulatorStateMetadata;
import io.trino.spi.type.Type;
@AccumulatorStateMetadata(stateSerializerClass = BlockPositionStateSerializer.class)
public interface BlockPositionState
extends AccumulatorState, NullableState
{
Block getBlock();
int getPosition();
void setBlock(Block value);
void setPosition(int position);
@Override
default boolean isNull()
{
Block block = getBlock();
return block == null || block.isNull(getPosition());
}
default void set(BlockPositionState state)
{
setBlock(state.getBlock());
setPosition(state.getPosition());
}
static void write(Type type, BlockPositionState state, BlockBuilder out)
{
if (state.getBlock() == null) {
out.appendNull();
}
else {
type.appendTo(state.getBlock(), state.getPosition(), out);
}
}
}