io.trino.operator.PageWithPositionEqualsAndHash 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.Page;
/**
* Equals and hash evaluated at the specified page positions. Implementations need to be hash table friendly.
*
* Note: this usage is likely to be megamorphic, so use at your own risk!
*/
public interface PageWithPositionEqualsAndHash
{
boolean equals(Page left, int leftPosition, Page right, int rightPosition);
long hashCode(Page page, int position);
}