com.espertech.esper.epl.virtualdw
Class SubordTableLookupStrategyVirtualDW

java.lang.Object
  com.espertech.esper.epl.virtualdw.SubordTableLookupStrategyVirtualDW

All Implemented Interfaces:

SubordTableLookupStrategy

public class SubordTableLookupStrategyVirtualDW
extends java.lang.Object
implements SubordTableLookupStrategy

Constructor Summary

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

Method Summary

LookupStrategyDesc	getStrategyDesc()
java.util.Collection<EventBean>	lookup(EventBean[] eventsPerStream, ExprEvaluatorContext context) Returns matched events for a set of events to look up for.
java.lang.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(java.lang.String namedWindowName,
                                          VirtualDataWindowLookup externalIndex,
                                          java.util.List<SubordPropHashKey> hashKeys,
                                          CoercionDesc hashKeyCoercionTypes,
                                          java.util.List<SubordPropRangeKey> rangeKeys,
                                          CoercionDesc rangeKeyCoercionTypes,
                                          boolean nwOnTrigger,
                                          int numOuterStreams)

Method Detail

lookup

public java.util.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

Returns:

set of matching events, or null if none matching

toQueryPlan

public java.lang.String toQueryPlan()

Specified by:

toQueryPlan in interface SubordTableLookupStrategy

getStrategyDesc

public LookupStrategyDesc getStrategyDesc()

Specified by:

getStrategyDesc in interface SubordTableLookupStrategy