com.espertech.esper.epl.lookup

Class SubordSortedTableLookupStrategy

java.lang.Object

com.espertech.esper.epl.lookup.SubordSortedTableLookupStrategy

All Implemented Interfaces:

SubordTableLookupStrategy

public class SubordSortedTableLookupStrategy
extends java.lang.Object
implements SubordTableLookupStrategy

Index lookup strategy for subqueries.

Field Summary

Fields

Modifier and Type	Field and Description
protected PropertySortedEventTable	index Index to look up in.
protected SortedAccessStrategy	strategy

Constructor Summary

Constructors

Constructor and Description
SubordSortedTableLookupStrategy(SortedAccessStrategy strategy, PropertySortedEventTable index, LookupStrategyDesc strategyDesc)

Method Summary

Modifier and Type	Method and Description
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

Field Detail

strategy

protected final SortedAccessStrategy strategy

index

protected final PropertySortedEventTable index

Index to look up in.

Constructor Detail

SubordSortedTableLookupStrategy

public SubordSortedTableLookupStrategy(SortedAccessStrategy strategy,
                                       PropertySortedEventTable index,
                                       LookupStrategyDesc strategyDesc)

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

context - context

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