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 java.lang.Object
implements HistoricalIndexLookupStrategy

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

Constructor Summary

HistoricalIndexLookupStrategyNoIndex()

Method Summary

java.util.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.
java.lang.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 java.util.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

Returns:

full set or partial index iterator

toQueryPlan

public java.lang.String toQueryPlan()

Specified by:

toQueryPlan in interface HistoricalIndexLookupStrategy