Class SimpleQueryRecord.PartialResult.Step

Simple IQueryRecord.IPartialResult.IStep implementation.

Inheritance

object

SimpleQueryRecord.PartialResult.Step

Implements

IStep

IPortableObject

Inherited Members

object.Equals(object)

object.Equals(object, object)

object.GetHashCode()

object.GetType()

object.MemberwiseClone()

object.ReferenceEquals(object, object)

object.ToString()

Namespace: Tangosol.Util

Assembly: Coherence.dll

Syntax

public class SimpleQueryRecord.PartialResult.Step : IStep, IPortableObject

Constructors

Step()

Default constructor (necessary for IPortableObject interface).

Declaration

public Step()

Step(IStep)

Copy constructor for an IStep.

Declaration

public Step(IStep step)

Parameters

Type	Name	Description
IStep	step	The step to copy.

Fields

m_cMillis

The execution time in milliseconds.

Declaration

protected long m_cMillis

Field Value

Type	Description
long

m_listSubSteps

The list of child steps.

Declaration

protected IList m_listSubSteps

Field Value

Type	Description
IList

m_nEfficiency

The estimated cost.

Declaration

protected int m_nEfficiency

Field Value

Type	Description
int

m_nSizeIn

The pre-execution key set size.

Declaration

protected int m_nSizeIn

Field Value

Type	Description
int

m_nSizeOut

The post-execution key set size.

Declaration

protected int m_nSizeOut

Field Value

Type	Description
int

m_sFilter

The filter description.

Declaration

protected string m_sFilter

Field Value

Type	Description
string

m_setIndexLookupRecords

The set of index lookup records.

Declaration

protected IList m_setIndexLookupRecords

Field Value

Type	Description
IList

Properties

Duration

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

Declaration

public long Duration { get; }

Property Value

Type	Description
long

Efficiency

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

Declaration

public int Efficiency { get; }

Property Value

Type	Description
int

FilterDescription

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

Declaration

public string FilterDescription { get; }

Property Value

Type	Description
string

IndexLookupRecords

The recorded information about the index lookups performed during filter evaluation as part of an IQueryRecord.

Declaration

public 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

public 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

public int PreFilterKeySetSize { get; }

Property Value

Type	Description
int

Steps

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

Declaration

public IList Steps { get; }

Property Value

Type	Description
IList

Methods

IsMatching(IStep)

Determine whether or not the given step is capable of being placed in one-to-one correspondence with this step. Steps are defined to be matching if both steps have equivalent name, index lookup records and owned lists of sub-steps.

Declaration

public bool IsMatching(IStep step)

Parameters

Type	Name	Description
IStep	step	The IStep to be checked.

Returns

Type	Description
bool	True iff the given step matches with this step.

Merge(IStep)

Merge the given step with this one. This method assumes that the given step matches with this one.

Declaration

public void Merge(IStep step)

Parameters

Type	Name	Description
IStep	step	The IStep to merge.

ReadExternal(IPofReader)

Restore the contents of a user type instance by reading its state using the specified IPofReader object.

Declaration

public virtual void ReadExternal(IPofReader reader)

Parameters

Type	Name	Description
IPofReader	reader	The IPofReader from which to read the object's state.

Exceptions

Type	Condition
IOException	If an I/O error occurs.

WriteExternal(IPofWriter)

Save the contents of a POF user type instance by writing its state using the specified IPofWriter object.

Declaration

public virtual void WriteExternal(IPofWriter writer)

Parameters

Type	Name	Description
IPofWriter	writer	The IPofWriter to which to write the object's state.

Exceptions

Type	Condition
IOException	If an I/O error occurs.

Implements

IStep

IPortableObject