Interface IStep

A IQueryRecord.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 RecordType of the recorder in use when the step was created.

Namespace: Tangosol.Util

Assembly: Coherence.dll

Syntax

public interface IStep

Properties

Duration

The amount of time (in ms) spent evaluating the filter or applying an index for this query plan step.

Declaration

long Duration { get; }

Property Value

Type	Description
long

Efficiency

The calculated cost of applying the filter as defined by IIndexAwareFilter.CalculateEffectiveness(IDictionary, ICollection).

Declaration

int Efficiency { get; }

Property Value

Type	Description
int

FilterDescription

A description of the filter that was associated with this step during its creation.

Declaration

string FilterDescription { get; }

Property Value

Type	Description
string

IndexLookupRecords

The recorded information about the index lookups performed during filter evaluation as part of a query record.

Declaration

ICollection IndexLookupRecords { get; }

Property Value

Type	Description
ICollection

PostFilterKeySetSize

The size of the key set remaining after evaluating the filter or applying an index. This value can be used together with PreFilterKeySetSize to calculate an actual effectiveness (reduction of the key set) for this filter step.

Declaration

int PostFilterKeySetSize { get; }

Property Value

Type	Description
int

PreFilterKeySetSize

The size of the key set prior to evaluating the filter or applying an index.
This value can be used together with PostFilterKeySetSize to calculate an actual effectiveness (reduction of the key set) for this filter step.

Declaration

int PreFilterKeySetSize { get; }

Property Value

Type	Description
int

Steps

The inner nested steps, may be null if not nested.

Declaration

IList Steps { get; }

Property Value

Type	Description
IList