Package com.tangosol.util

Interface QueryRecord.PartialResult.ExplainStep

All Superinterfaces:

QueryRecord.PartialResult.RecordableStep, QueryRecord.PartialResult.Step

All Known Implementing Classes:

SimpleQueryRecord.PartialResult.ExplainStep

Enclosing interface:

QueryRecord.PartialResult

public static interface QueryRecord.PartialResult.ExplainStep
extends QueryRecord.PartialResult.RecordableStep

A QueryRecord.ExplainStep is a QueryRecord.PartialResult.RecordableStep that provides the ability to record the estimated cost of evaluating a filter as part of a query operation.

Method Summary

Modifier and Type	Method	Description
QueryRecord.PartialResult.ExplainStep	ensureStep(Filter filter)	Ensure an inner nested explain step for the given filter.
void	recordEfficiency(int nCost)	Record the calculated cost of applying the filter as defined by calculateEffectiveness

Methods inherited from interface com.tangosol.util.QueryRecord.PartialResult.RecordableStep

recordExtractor, recordPreFilterKeys

Methods inherited from interface com.tangosol.util.QueryRecord.PartialResult.Step

getDuration, getEfficiency, getFilterDescription, getIndexLookupRecords, getPostFilterKeySetSize, getPreFilterKeySetSize, getSteps

Method Detail

recordEfficiency

void recordEfficiency(int nCost)

Record the calculated cost of applying the filter as defined by calculateEffectiveness

Parameters:

nCost - an effectiveness estimate of how well the associated filter can use any applicable index

ensureStep

QueryRecord.PartialResult.ExplainStep ensureStep(Filter filter)

Ensure an inner nested explain step for the given filter. If there is no inner nested step associated with the given filter then a new step is created.

Parameters:

filter - the filter to associate the new step with

Returns:

the inner nested step associated with the given filter