com.espertech.esper.epl.join.pollindex
Interface PollResultIndexingStrategy

All Known Implementing Classes:

PollResultIndexingStrategyComposite, PollResultIndexingStrategyIndex, PollResultIndexingStrategyIndexCoerce, PollResultIndexingStrategyIndexCoerceSingle, PollResultIndexingStrategyIndexSingle, PollResultIndexingStrategyIndexSingleArray, PollResultIndexingStrategyNoIndex, PollResultIndexingStrategySorted

public interface PollResultIndexingStrategy

A strategy for converting a poll-result into a potentially indexed table.

Some implementations may decide to not index the poll result and simply hold a reference to the result. Other implementations may use predetermined index properties to index the poll result for faster lookup.

Method Summary

EventTable[]	index(java.util.List<EventBean> pollResult, boolean isActiveCache) Build and index of a poll result.
java.lang.String	toQueryPlan()

Method Detail

index

EventTable[] index(java.util.List<EventBean> pollResult,
                   boolean isActiveCache)

Build and index of a poll result.

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.

Returns:

indexed collection of poll results

toQueryPlan

java.lang.String toQueryPlan()