com.espertech.esper.epl.join.base

Class HistoricalIndexLookupStrategyNoIndex

java.lang.Object

com.espertech.esper.epl.join.base.HistoricalIndexLookupStrategyNoIndex

All Implemented Interfaces:

HistoricalIndexLookupStrategy

public class HistoricalIndexLookupStrategyNoIndex
extends Object
implements HistoricalIndexLookupStrategy

Full table scan strategy for a poll-based cache result.

Constructor Summary

Constructors

Constructor and Description
HistoricalIndexLookupStrategyNoIndex()

Method Summary

Modifier and Type	Method and Description
Iterator<EventBean>	lookup(EventBean lookupEvent, EventTable[] index, ExprEvaluatorContext context) Look up into the index, potentially using some of the properties in the lookup event, returning a partial or full result in respect to the index.
String	toQueryPlan()

Methods inherited from class java.lang.Object

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

Constructor Detail

HistoricalIndexLookupStrategyNoIndex

public HistoricalIndexLookupStrategyNoIndex()

Method Detail

lookup

public Iterator<EventBean> lookup(EventBean lookupEvent,
                                  EventTable[] index,
                                  ExprEvaluatorContext context)

Description copied from interface: HistoricalIndexLookupStrategy

Look up into the index, potentially using some of the properties in the lookup event, returning a partial or full result in respect to the index.

Specified by:

lookup in interface HistoricalIndexLookupStrategy

Parameters:

lookupEvent - provides properties to use as key values for indexes

index - is the table providing the cache result set, potentially indexed by index fields

context - context

Returns:

full set or partial index iterator

toQueryPlan

public String toQueryPlan()

Specified by:

toQueryPlan in interface HistoricalIndexLookupStrategy