com.espertech.esper.epl.virtualdw

Class SubordTableLookupStrategyVirtualDW

java.lang.Object

com.espertech.esper.epl.virtualdw.SubordTableLookupStrategyVirtualDW

All Implemented Interfaces:

SubordTableLookupStrategy

public class SubordTableLookupStrategyVirtualDW
extends Object
implements SubordTableLookupStrategy

Constructor Summary

Constructors

Constructor and Description
SubordTableLookupStrategyVirtualDW(String namedWindowName, VirtualDataWindowLookup externalIndex, List<SubordPropHashKey> hashKeys, CoercionDesc hashKeyCoercionTypes, List<SubordPropRangeKey> rangeKeys, CoercionDesc rangeKeyCoercionTypes, boolean nwOnTrigger, int numOuterStreams)

Method Summary

Modifier and Type	Method and 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 Detail

SubordTableLookupStrategyVirtualDW

public SubordTableLookupStrategyVirtualDW(String namedWindowName,
                                          VirtualDataWindowLookup externalIndex,
                                          List<SubordPropHashKey> hashKeys,
                                          CoercionDesc hashKeyCoercionTypes,
                                          List<SubordPropRangeKey> rangeKeys,
                                          CoercionDesc rangeKeyCoercionTypes,
                                          boolean nwOnTrigger,
                                          int numOuterStreams)

Method Detail

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