Package com.espertech.esper.common.internal.epl.virtualdw

Class SubordTableLookupStrategyVDW

java.lang.Object

com.espertech.esper.common.internal.epl.virtualdw.SubordTableLookupStrategyVDW

All Implemented Interfaces:

SubordTableLookupStrategy

public class SubordTableLookupStrategyVDW
extends Object
implements SubordTableLookupStrategy

Field Summary

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

EPTYPE

Constructor Summary

Constructors

Constructor	Description
SubordTableLookupStrategyVDW(VirtualDWViewFactory factory, SubordTableLookupStrategyFactoryVDW subordTableFactory, VirtualDataWindowLookup externalIndex)

Method Summary

Modifier and Type	Method	Description
LookupStrategyDesc	getStrategyDesc()
Collection<EventBean>	lookup(EventBean[] eventsPerStream, 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

SubordTableLookupStrategyVDW

public SubordTableLookupStrategyVDW(VirtualDWViewFactory factory,
 SubordTableLookupStrategyFactoryVDW subordTableFactory,
 VirtualDataWindowLookup externalIndex)

Method Details

lookup

public Collection<EventBean> lookup(EventBean[] eventsPerStream,
 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:

eventsPerStream - to look up

context - context

Returns:

set of matching events, or null if none matching

toQueryPlan

public String toQueryPlan()

Specified by:

toQueryPlan in interface SubordTableLookupStrategy

getStrategyDesc

public LookupStrategyDesc getStrategyDesc()

Specified by:

getStrategyDesc in interface SubordTableLookupStrategy