/*
***************************************************************************************
* Copyright (C) 2006 EsperTech, Inc. All rights reserved. *
* http://www.espertech.com/esper *
* http://www.espertech.com *
* ---------------------------------------------------------------------------------- *
* The software in this package is published under the terms of the GPL license *
* a copy of which has been included with this distribution in the license.txt file. *
***************************************************************************************
*/
package com.espertech.esper.epl.agg.service;
import com.espertech.esper.core.context.util.AgentInstanceContext;
import com.espertech.esper.epl.core.EngineImportService;
import com.espertech.esper.epl.expression.core.ExprEvaluator;
/**
* Implementation for handling aggregation with grouping by group-keys.
*/
public class AggSvcGroupByRefcountedNoAccessFactory extends AggregationServiceFactoryBase {
/**
* Ctor.
*
* @param evaluators - evaluate the sub-expression within the aggregate function (ie. sum(4*myNum))
* @param prototypes - collect the aggregation state that evaluators evaluate to, act as prototypes for new aggregations
* aggregation states for each group
*/
public AggSvcGroupByRefcountedNoAccessFactory(ExprEvaluator[] evaluators,
AggregationMethodFactory[] prototypes) {
super(evaluators, prototypes);
}
public AggregationService makeService(AgentInstanceContext agentInstanceContext, EngineImportService engineImportService, boolean isSubquery, Integer subqueryNumber) {
return new AggSvcGroupByRefcountedNoAccessImpl(evaluators, aggregators);
}
}