Package com.tangosol.util

Interface QueryRecord.PartialResult.RecordableStep

All Superinterfaces:

QueryRecord.PartialResult.Step

All Known Subinterfaces:

QueryRecord.PartialResult.ExplainStep, QueryRecord.PartialResult.TraceStep

All Known Implementing Classes:

SimpleQueryRecord.PartialResult.AbstractRecordableStep, SimpleQueryRecord.PartialResult.ExplainStep, SimpleQueryRecord.PartialResult.TraceStep

Enclosing interface:

QueryRecord.PartialResult

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

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

Method Summary

Modifier and Type	Method	Description
void	recordExtractor(ValueExtractor extractor)	Record all relevant index information for any index associated with the given extractor (e.g. index lookup and range scan).
void	recordPreFilterKeys(int cKeys)	Record the number of keys passed to the filter for evaluation.

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

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

Method Detail

recordPreFilterKeys

void recordPreFilterKeys(int cKeys)

Record the number of keys passed to the filter for evaluation. This method may be called repeatedly on the same step instance. Each call will add to the total recorded pre-evaluation key set size for this step.

During the scan phase of a query trace operation, each entry is individually evaluated against the filter. Each call to trace should record a key count of 1.

Parameters:

cKeys - the number of keys to be evaluated

recordExtractor

void recordExtractor(ValueExtractor extractor)

Record all relevant index information for any index associated with the given extractor (e.g. index lookup and range scan). This method may be called multiple times if there is more than one extractor associated with the filter used to create this step.

Parameters:

extractor - the extractor associated with the filter for this step