com.espertech.esper.epl.agg.service

Class AggSvcGroupByRefcountedNoAccessFactory

java.lang.Object

com.espertech.esper.epl.agg.service.AggregationServiceFactoryBase

com.espertech.esper.epl.agg.service.AggSvcGroupByRefcountedNoAccessFactory

All Implemented Interfaces:

AggregationServiceFactory

public class AggSvcGroupByRefcountedNoAccessFactory
extends AggregationServiceFactoryBase

Implementation for handling aggregation with grouping by group-keys.

Field Summary

Fields inherited from class com.espertech.esper.epl.agg.service.AggregationServiceFactoryBase

aggregators, evaluators

Constructor Summary

Constructors

Constructor and Description
AggSvcGroupByRefcountedNoAccessFactory(ExprEvaluator[] evaluators, AggregationMethodFactory[] prototypes) Ctor.

Method Summary

Modifier and Type	Method and Description
AggregationService	makeService(AgentInstanceContext agentInstanceContext, EngineImportService engineImportService, boolean isSubquery, Integer subqueryNumber)

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

AggSvcGroupByRefcountedNoAccessFactory

public AggSvcGroupByRefcountedNoAccessFactory(ExprEvaluator[] evaluators,
                                              AggregationMethodFactory[] prototypes)

Ctor.

Parameters:

evaluators - - evaluate the sub-expression within the aggregate function (ie. sum(4*myNum))

prototypes - - collect the aggregation state that evaluators evaluate to, act as prototypes for new aggregations aggregation states for each group

Method Detail

makeService

public AggregationService makeService(AgentInstanceContext agentInstanceContext,
                                      EngineImportService engineImportService,
                                      boolean isSubquery,
                                      Integer subqueryNumber)