Class BasePathOperator

Abstract Base Class for Path Operators.

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

Constructors

| Edit this page View Source

BasePathOperator(PatternItem, ISparqlPath, PatternItem)

Creates a new Path Operator.

Declaration
protected BasePathOperator(PatternItem start, ISparqlPath path, PatternItem end)
Parameters
Type Name Description
PatternItem start

Path Start.
ISparqlPath path

Property Path.
PatternItem end

Path End.

Properties

| Edit this page View Source

FixedVariables

Gets the enumeration of fixed variables in the algebra i.e. variables that are guaranteed to have a bound value.

Declaration
public IEnumerable<string> FixedVariables { get; }
Property Value
Type Description
IEnumerable<string>
| Edit this page View Source

FloatingVariables

Gets the enumeration of floating variables in the algebra i.e. variables that are not guaranteed to have a bound value.

Declaration
public IEnumerable<string> FloatingVariables { get; }
Property Value
Type Description
IEnumerable<string>
| Edit this page View Source

Path

Gets the Property Path.

Declaration
public ISparqlPath Path { get; }
Property Value
Type Description
ISparqlPath
| Edit this page View Source

PathEnd

Gets the Path End.

Declaration
public PatternItem PathEnd { get; }
Property Value
Type Description
PatternItem
| Edit this page View Source

PathStart

Gets the Path Start.

Declaration
public PatternItem PathStart { get; }
Property Value
Type Description
PatternItem
| Edit this page View Source

Variables

Gets the Variables used in the Algebra.

Declaration
public IEnumerable<string> Variables { get; }
Property Value
Type Description
IEnumerable<string>

Methods

| Edit this page View Source

Accept<T>(ISparqlAlgebraVisitor<T>)

Accept a simple algebra visitor.

Declaration
public abstract 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.
| Edit this page View Source

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 abstract 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.
| Edit this page View Source

ToGraphPattern()

Transforms the Algebra back into a Graph Pattern.

Declaration
public abstract GraphPattern ToGraphPattern()
Returns
Type Description
GraphPattern
| Edit this page View Source

ToQuery()

Transforms the Algebra back into a Query.

Declaration
public SparqlQuery ToQuery()
Returns
Type Description
SparqlQuery
| Edit this page View Source

ToString()

Gets the String representation of the Algebra.

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

Implements

Extension Methods