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

java.lang.Object
  extended by com.espertech.esper.epl.agg.service.AggregationServiceFactoryBase
      extended by 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
AggSvcGroupByRefcountedNoAccessFactory(ExprEvaluator[] evaluators, AggregationMethodFactory[] prototypes)
          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)
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)

© 2006-2011 EsperTech Inc.
All rights reserved.
Visit us at espertech.com