com.hazelcast.map.impl.query.AccumulationExecutor Maven / Gradle / Ivy
/*
* Copyright (c) 2008-2018, Hazelcast, Inc. All Rights Reserved.
*
* 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 com.hazelcast.map.impl.query;
import com.hazelcast.aggregation.Aggregator;
import com.hazelcast.query.impl.QueryableEntry;
import java.util.Collection;
/**
* Executes the accumulation phase of the Aggregator.
*
* All entries are accumulates by the result aggregator returned in the AggregationResult.
*/
public interface AccumulationExecutor {
/**
* @param aggregator Instance of aggregator using which the entries should be accumulated (it will not be modified)
* @param entries Entries to be accumulated
* @param partitionIds IDs of the partitions where the entries reside
* @return AggregationResult encompassing the result aggregator
*/
AggregationResult execute(Aggregator aggregator, Collection entries,
Collection partitionIds);
}