Class ZeroLengthPath

Represents a Zero Length Path in the SPARQL Algebra.

Inheritance
object
BasePathOperator
ZeroLengthPath
Implements
Inherited Members
Namespace: VDS.RDF.Query.Algebra
Assembly: dotNetRdf.dll
Syntax
public class ZeroLengthPath : BasePathOperator, IPathOperator, ISparqlAlgebra, IVisitable, IProcessable

Constructors

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ZeroLengthPath(PatternItem, PatternItem, ISparqlPath)

Creates a new Zero Length Path.

Declaration
public ZeroLengthPath(PatternItem start, PatternItem end, ISparqlPath path)
Parameters
Type Name Description
PatternItem start

Path Start.
PatternItem end

Path End.
ISparqlPath path

Property Path.

Methods

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Accept<T>(ISparqlAlgebraVisitor<T>)

Accept a simple algebra visitor.

Declaration
public override T Accept<T>(ISparqlAlgebraVisitor<T> visitor)
Parameters
Type Name Description
ISparqlAlgebraVisitor<T> visitor

The visitor implementation.
Returns
Type Description
T
Type Parameters
Name Description
T

The type returned by the Visit methods of the visitor.
Overrides
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Accept<TResult, TContext>(ISparqlQueryAlgebraProcessor<TResult, TContext>, TContext)

Called by an algebra visitor to process an item by invoking the appropriate method on the processor passed in.

Declaration
public override TResult Accept<TResult, TContext>(ISparqlQueryAlgebraProcessor<TResult, TContext> processor, TContext context)
Parameters
Type Name Description
ISparqlQueryAlgebraProcessor<TResult, TContext> processor

The processor to invoke.
TContext context

The context to pass to the processor.
Returns
Type Description
TResult

The result of invoking the processor method.
Type Parameters
Name Description
TResult

The type of result returned by the processor.
TContext

The type of the context object to be provided to the processor.
Overrides
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AreBothTerms()

Return true if both the path start and the path end are fixed terms, or false if either start or end are a variable.

Declaration
public bool AreBothTerms()
Returns
Type Description
bool
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AreSameTerms()

Return true of the path start and path end reference the same term, false otherwise.

Declaration
public bool AreSameTerms()
Returns
Type Description
bool
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ToGraphPattern()

Transforms the Algebra back into a Graph Pattern.

Declaration
public override GraphPattern ToGraphPattern()
Returns
Type Description
GraphPattern
Overrides
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ToString()

Gets the String representation of the Algebra.

Declaration
public override string ToString()
Returns
Type Description
string
Overrides

Implements

Extension Methods