Package com.espertech.esper.common.internal.context.airegistry

Class AIRegistrySubselectLookupSingle

java.lang.Object

com.espertech.esper.common.internal.context.airegistry.AIRegistrySubselectLookupSingle

All Implemented Interfaces:

AIRegistrySubselectLookup, SubordTableLookupStrategy

public class AIRegistrySubselectLookupSingle
extends Object
implements AIRegistrySubselectLookup

Field Summary

Fields inherited from interface com.espertech.esper.common.internal.epl.lookup.SubordTableLookupStrategy

EPTYPE

Constructor Summary

Constructors

Constructor	Description
AIRegistrySubselectLookupSingle(LookupStrategyDesc strategyDesc)

Method Summary

Modifier and Type	Method	Description
void	assignService(int num, SubordTableLookupStrategy subselectStrategy)
void	deassignService(int num)
int	getInstanceCount()
LookupStrategyDesc	getStrategyDesc()
Collection<EventBean>	lookup(EventBean[] events, ExprEvaluatorContext context)	Returns matched events for a set of events to look up for.
String	toQueryPlan()

Methods inherited from class java.lang.Object

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

Constructor Details

AIRegistrySubselectLookupSingle

public AIRegistrySubselectLookupSingle(LookupStrategyDesc strategyDesc)

Method Details

assignService

public void assignService(int num,
 SubordTableLookupStrategy subselectStrategy)

Specified by:

assignService in interface AIRegistrySubselectLookup

deassignService

public void deassignService(int num)

Specified by:

deassignService in interface AIRegistrySubselectLookup

lookup

public Collection<EventBean> lookup(EventBean[] events,
 ExprEvaluatorContext context)

Description copied from interface: SubordTableLookupStrategy

Returns matched events for a set of events to look up for. Never returns an empty result set, always returns null to indicate no results.

Specified by:

lookup in interface SubordTableLookupStrategy

Parameters:

events - to look up

context - context

Returns:

set of matching events, or null if none matching

getInstanceCount

public int getInstanceCount()

Specified by:

getInstanceCount in interface AIRegistrySubselectLookup

toQueryPlan

public String toQueryPlan()

Specified by:

toQueryPlan in interface SubordTableLookupStrategy

getStrategyDesc

public LookupStrategyDesc getStrategyDesc()

Specified by:

getStrategyDesc in interface SubordTableLookupStrategy