Package com.tangosol.util

Interface QueryRecord.PartialResult.Step

All Known Subinterfaces:
QueryRecord.PartialResult.ExplainStep, QueryRecord.PartialResult.RecordableStep, QueryRecord.PartialResult.TraceStep
All Known Implementing Classes:
SimpleQueryRecord.PartialResult.AbstractRecordableStep, SimpleQueryRecord.PartialResult.ExplainStep, SimpleQueryRecord.PartialResult.Step, SimpleQueryRecord.PartialResult.TraceStep
Enclosing interface:
QueryRecord.PartialResult
public static interface QueryRecord.PartialResult.Step
A QueryRecord.Step carries the recorded cost of evaluating a filter as part of a query operation. This cost may be the estimated or actual execution cost depending on the type of the recorder in use when the step was created.

  • Method Details

    • getFilterDescription

      String getFilterDescription()
      Get a description of the filter that was associated with this step during its creation.
      Returns:
      the description of the filter

    • getIndexLookupRecords

      Set<? extends QueryRecord.PartialResult.IndexLookupRecord> getIndexLookupRecords()
      Get the recorded information about the index lookups performed during filter evaluation as part of a query record.
      Returns:
      a set of QueryRecord.PartialResult.IndexLookupRecord

    • getEfficiency

      int getEfficiency()
      Get the calculated cost of applying the filter as defined by calculateEffectiveness
      Returns:
      an effectiveness estimate of how well the associated filter can use any applicable index

    • getPreFilterKeySetSize

      int getPreFilterKeySetSize()
      Get the size of the key set prior to evaluating the filter or applying an index. This value can be used together with getPostFilterKeySetSize() to calculate an actual effectiveness (reduction of the key set) for this filter step.
      Returns:
      the size of the key set prior to evaluating the filter or applying an index

    • getPostFilterKeySetSize

      int getPostFilterKeySetSize()
      Get the size of the key set remaining after evaluating the filter or applying an index. This value can be used together with getPreFilterKeySetSize() to calculate an actual effectiveness (reduction of the key set) for this filter step.
      Returns:
      the size of the key set after evaluating the filter or applying an index

    • getDuration

      long getDuration()
      Get the amount of time (in ms) spent evaluating the filter or applying an index for this query plan step.
      Returns:
      the number of milliseconds spent evaluating the filter

    • getSteps

      List<? extends QueryRecord.PartialResult.Step> getSteps()
      Return inner nested steps, may be null if not nested.
      Returns:
      the inner nested steps in the order they are applied