io.trino.operator.FlatHashStrategy 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;
import io.trino.spi.block.Block;
import io.trino.spi.block.BlockBuilder;
public interface FlatHashStrategy
{
boolean isAnyVariableWidth();
int getTotalFlatFixedLength();
int getTotalVariableWidth(Block[] blocks, int position);
void readFlat(byte[] fixedChunk, int fixedOffset, byte[] variableChunk, BlockBuilder[] blockBuilders);
void writeFlat(Block[] blocks, int position, byte[] fixedChunk, int fixedOffset, byte[] variableChunk, int variableOffset);
boolean valueIdentical(
byte[] leftFixedChunk,
int leftFixedOffset,
byte[] leftVariableChunk,
Block[] rightBlocks,
int rightPosition);
long hash(Block[] blocks, int position);
long hash(byte[] fixedChunk, int fixedOffset, byte[] variableChunk);
void hashBlocksBatched(Block[] blocks, long[] hashes, int offset, int length);
}