com.espertech.esper.epl.join.pollindex

Class PollResultIndexingStrategySorted

java.lang.Object

com.espertech.esper.epl.join.pollindex.PollResultIndexingStrategySorted

All Implemented Interfaces:

PollResultIndexingStrategy

public class PollResultIndexingStrategySorted
extends Object
implements PollResultIndexingStrategy

Strategy for building an index out of poll-results knowing the properties to base the index on.

Constructor Summary

Constructors

Constructor and Description
PollResultIndexingStrategySorted(int streamNum, EventType eventType, String propertyName, Class coercionType)

Method Summary

Modifier and Type	Method and Description
EventTable[]	index(List<EventBean> pollResult, boolean isActiveCache, StatementContext statementContext) Build and index of a poll result.
String	toQueryPlan()

Methods inherited from class java.lang.Object

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

Constructor Detail

PollResultIndexingStrategySorted

public PollResultIndexingStrategySorted(int streamNum,
                                        EventType eventType,
                                        String propertyName,
                                        Class coercionType)

Method Detail

index

public EventTable[] index(List<EventBean> pollResult,
                          boolean isActiveCache,
                          StatementContext statementContext)

Description copied from interface: PollResultIndexingStrategy

Build and index of a poll result.

Specified by:

index in interface PollResultIndexingStrategy

Parameters:

pollResult - result of a poll operation

isActiveCache - true to indicate that caching is active and therefore index building makes sense as the index structure is not a throw-away.

statementContext - statement context

Returns:

indexed collection of poll results

toQueryPlan

public String toQueryPlan()

Specified by:

toQueryPlan in interface PollResultIndexingStrategy