Class PathTransformContext

Transform Context class that is used in the Path to Algebra Transformation process.

Inheritance

object

PathTransformContext

Inherited Members

object.Equals(object)

object.Equals(object, object)

object.GetHashCode()

object.GetType()

object.MemberwiseClone()

object.ReferenceEquals(object, object)

object.ToString()

Namespace: VDS.RDF.Query.Paths

Assembly: dotNetRdf.dll

Syntax

public class PathTransformContext

Constructors

PathTransformContext(PathTransformContext)

Creates a new Path Transform Context from an existing context.

Declaration

public PathTransformContext(PathTransformContext context)

Parameters

Type	Name	Description
PathTransformContext	context	Context.

PathTransformContext(PatternItem, PatternItem)

Creates a new Path Transform Context.

Declaration

public PathTransformContext(PatternItem start, PatternItem end)

Parameters

Type	Name	Description
PatternItem	start	Subject that is the start of the Path.
PatternItem	end	Object that is the end of the Path.

Properties

End

Gets/Sets the Object at the end of the Pattern.

Declaration

public PatternItem End { get; set; }

Property Value

Type	Description
PatternItem

NextID

Gets the Next ID to be used.

Declaration

public int NextID { get; set; }

Property Value

Type	Description
int

Object

Gets/Sets the Object of the Triple Pattern at this point in the Path Transformation.

Declaration

public PatternItem Object { get; set; }

Property Value

Type	Description
PatternItem

Subject

Gets/Sets the Subject of the Triple Pattern at this point in the Path Transformation.

Declaration

public PatternItem Subject { get; set; }

Property Value

Type	Description
PatternItem

Top

Gets/Sets whether this is the Top Level Pattern.

Declaration

public bool Top { get; set; }

Property Value

Type	Description
bool

Methods

AddTriplePattern(ITriplePattern)

Adds a Triple Pattern to the Path Transform.

Declaration

public void AddTriplePattern(ITriplePattern p)

Parameters

Type	Name	Description
ITriplePattern	p	Triple Pattern.

GetNextTemporaryVariable()

Gets the next available temporary variable.

Declaration

public BlankNodePattern GetNextTemporaryVariable()

Returns

Type	Description
BlankNodePattern

GetTriplePattern(PatternItem, ISparqlPath, PatternItem)

Creates a Triple Pattern.

Declaration

public ITriplePattern GetTriplePattern(PatternItem subj, ISparqlPath path, PatternItem obj)

Parameters

Type	Name	Description
PatternItem	subj	Subject.
ISparqlPath	path	Property Path.
PatternItem	obj	Object.

Returns

Type	Description
ITriplePattern

ResetObject()

Resets the current Object to be the end Object of the Path.

Declaration

public void ResetObject()

ToAlgebra()

Returns the BGP that the Path Transform produces.

Declaration

public ISparqlAlgebra ToAlgebra()

Returns

Type	Description
ISparqlAlgebra

Extension Methods

Extensions.ToSafeString(object)

Extensions.AsEnumerable<T>(T)