io.trino.operator.index.IndexedData 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.index;
import io.trino.spi.Page;
import io.trino.spi.PageBuilder;
import java.io.Closeable;
public interface IndexedData
extends Closeable
{
long UNLOADED_INDEX_KEY = -2;
long NO_MORE_POSITIONS = -1;
/**
* Returns UNLOADED_INDEX_KEY if the key has not been loaded.
* Returns NO_MORE_POSITIONS if the key has been loaded, but has no values.
* Returns a valid address if the key has been loaded and has values.
*/
long getJoinPosition(int position, Page page);
/**
* Returns the next address to join.
* Returns NO_MORE_POSITIONS if there are no more values to join.
*/
long getNextJoinPosition(long currentPosition);
void appendTo(long position, PageBuilder pageBuilder, int outputChannelOffset);
@Override
void close();
}