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, groupKeyBinding

Constructor Summary

AggSvcGroupByRefcountedNoAccessFactory(ExprEvaluator[] evaluators, AggregationMethodFactory[] prototypes, java.lang.Object groupKeyBinding)
Ctor.

Method Summary

AggregationService

makeService(AgentInstanceContext agentInstanceContext, MethodResolutionService methodResolutionService)

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,
                                              java.lang.Object groupKeyBinding)

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,
                                      MethodResolutionService methodResolutionService)