com.espertech.esper.epl.lookup

Interface SubordTableLookupStrategy

All Known Implementing Classes:

SubordCompositeTableLookupStrategy, SubordFullTableScanLookupStrategy, SubordFullTableScanLookupStrategyLocking, SubordFullTableScanTableLookupStrategy, SubordIndexedTableLookupStrategyCoercing, SubordIndexedTableLookupStrategyCoercingNW, SubordIndexedTableLookupStrategyExpr, SubordIndexedTableLookupStrategyExprNW, SubordIndexedTableLookupStrategyLocking, SubordIndexedTableLookupStrategyProp, SubordIndexedTableLookupStrategySingleCoercing, SubordIndexedTableLookupStrategySingleCoercingNW, SubordIndexedTableLookupStrategySingleExpr, SubordIndexedTableLookupStrategySingleExprNW, SubordIndexedTableLookupStrategySingleProp, SubordIndexedTableLookupStrategySinglePropUnique, SubordIndexedTableLookupTableStrategy, SubordInKeywordMultiTableLookupStrategy, SubordInKeywordMultiTableLookupStrategyNW, SubordInKeywordSingleTableLookupStrategy, SubordInKeywordSingleTableLookupStrategyNW, SubordSortedTableLookupStrategy, SubordTableLookupStrategyNullRow, SubordTableLookupStrategyQuadTreeNW, SubordTableLookupStrategyQuadTreeSubq, SubordTableLookupStrategyVirtualDW

public interface SubordTableLookupStrategy

Strategy for looking up, in some sort of table or index, or a set of events, potentially based on the events properties, and returning a set of matched events.

Method Summary

Modifier and Type	Method and Description
LookupStrategyDesc	getStrategyDesc()
java.util.Collection<EventBean>	lookup(EventBean[] events, ExprEvaluatorContext context) Returns matched events for a set of events to look up for.
java.lang.String	toQueryPlan()

Method Detail

lookup

java.util.Collection<EventBean> lookup(EventBean[] events,
                                       ExprEvaluatorContext context)

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.

Parameters:

events - to look up

context - context

Returns:

set of matching events, or null if none matching

toQueryPlan

java.lang.String toQueryPlan()

getStrategyDesc

LookupStrategyDesc getStrategyDesc()