Interface ISparqlAlgebra

Interface for classes that represent the SPARQL Algebra and are used to evaluate queries.
Namespace: VDS.RDF.Query.Algebra
Assembly: dotNetRDF.dll
Syntax
public interface ISparqlAlgebra

Properties

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FixedVariables

Gets the enumeration of fixed variables in the algebra i.e. variables that are guaranteed to have a bound value.
Declaration
IEnumerable<string> FixedVariables { get; }
Property Value
Type Description
System.Collections.Generic.IEnumerable<System.String>
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FloatingVariables

Gets the enumeration of floating variables in the algebra i.e. variables that are not guaranteed to have a bound value.
Declaration
IEnumerable<string> FloatingVariables { get; }
Property Value
Type Description
System.Collections.Generic.IEnumerable<System.String>
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Variables

Gets the enumeration of Variables used in the Algebra.
Declaration
IEnumerable<string> Variables { get; }
Property Value
Type Description
System.Collections.Generic.IEnumerable<System.String>

Methods

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Evaluate(SparqlEvaluationContext)

Evaluates the Algebra in the given Context.
Declaration
BaseMultiset Evaluate(SparqlEvaluationContext context)
Parameters
Type Name Description
SparqlEvaluationContext context Evaluation Context.
Returns
Type Description
BaseMultiset
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ToGraphPattern()

Converts the Algebra back to a Graph Pattern.
Declaration
GraphPattern ToGraphPattern()
Returns
Type Description
GraphPattern
Exceptions
Type Condition
System.NotSupportedException Thrown if the given Algebra cannot be converted to a Graph Pattern.
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ToQuery()

Converts the Algebra back to a SPARQL Query.
Declaration
SparqlQuery ToQuery()
Returns
Type Description
SparqlQuery
Exceptions
Type Condition
System.NotSupportedException Thrown if the given Algebra cannot be converted to a SPARQL Query.

Extension Methods