/**************************************************************************************
* Copyright (C) 2008 EsperTech, Inc. All rights reserved. *
* http://esper.codehaus.org *
* 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.MethodResolutionService;
import com.espertech.esper.epl.expression.ExprEvaluator;
/**
* Implementation for handling aggregation with grouping by group-keys.
*/
public class AggSvcGroupByNoAccessFactory 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 AggSvcGroupByNoAccessFactory(ExprEvaluator evaluators[], AggregationMethodFactory prototypes[])
{
super(evaluators, prototypes);
}
public AggregationService makeService(AgentInstanceContext agentInstanceContext, MethodResolutionService methodResolutionService) {
return new AggSvcGroupByNoAccessImpl(evaluators, aggregators, methodResolutionService);
}
}