com.espertech.esper.epl.join.base

Class HistoricalIndexLookupStrategySorted

java.lang.Object

com.espertech.esper.epl.join.base.HistoricalIndexLookupStrategySorted

All Implemented Interfaces:

HistoricalIndexLookupStrategy

public class HistoricalIndexLookupStrategySorted
extends Object
implements HistoricalIndexLookupStrategy

Index lookup strategy into a poll-based cache result.

Constructor Summary

Constructors

Constructor and Description
HistoricalIndexLookupStrategySorted(int lookupStream, QueryGraphValueEntryRange property)

Method Summary

Modifier and Type	Method and Description
Iterator<EventBean>	lookup(EventBean lookupEvent, EventTable[] indexTable, 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

HistoricalIndexLookupStrategySorted

public HistoricalIndexLookupStrategySorted(int lookupStream,
                                           QueryGraphValueEntryRange property)

Method Detail

lookup

public Iterator<EventBean> lookup(EventBean lookupEvent,
                                  EventTable[] indexTable,
                                  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

indexTable - 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