Package com.espertech.esper.common.internal.epl.join.exec.hash

Class IndexedTableLookupStrategyHashedExpr

java.lang.Object

com.espertech.esper.common.internal.epl.join.exec.hash.IndexedTableLookupStrategyHashedExpr

All Implemented Interfaces:

JoinExecTableLookupStrategy

public class IndexedTableLookupStrategyHashedExpr
extends Object
implements JoinExecTableLookupStrategy

Constructor Summary

Constructors

Constructor	Description
IndexedTableLookupStrategyHashedExpr(IndexedTableLookupPlanHashedOnlyFactory factory, PropertyHashedEventTable index, int numStreams)

Method Summary

Modifier and Type	Method	Description
PropertyHashedEventTable	getIndex()
LookupStrategyType	getLookupStrategyType()
Set<EventBean>	lookup(EventBean theEvent, Cursor cursor, ExprEvaluatorContext exprEvaluatorContext)	Returns matched events for a event to look up for.
String	toString()

Methods inherited from class java.lang.Object

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

Constructor Details

IndexedTableLookupStrategyHashedExpr

public IndexedTableLookupStrategyHashedExpr(IndexedTableLookupPlanHashedOnlyFactory factory,
 PropertyHashedEventTable index,
 int numStreams)

Method Details

getIndex

public PropertyHashedEventTable getIndex()

lookup

public Set<EventBean> lookup(EventBean theEvent,
 Cursor cursor,
 ExprEvaluatorContext exprEvaluatorContext)

Description copied from interface: JoinExecTableLookupStrategy

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

Specified by:

lookup in interface JoinExecTableLookupStrategy

Parameters:

theEvent - to look up

cursor - the path in the query that the lookup took

exprEvaluatorContext - expression evaluation context

Returns:

set of matching events, or null if none matching

toString

public String toString()

Overrides:

toString in class Object

getLookupStrategyType

public LookupStrategyType getLookupStrategyType()

Specified by:

getLookupStrategyType in interface JoinExecTableLookupStrategy