Class Filter

Represents a Filter.
Inheritance
System.Object
Filter
Inherited Members
System.Object.Equals(System.Object)
System.Object.Equals(System.Object, System.Object)
System.Object.GetHashCode()
System.Object.GetType()
System.Object.MemberwiseClone()
System.Object.ReferenceEquals(System.Object, System.Object)
Namespace: VDS.RDF.Query.Algebra
Assembly: dotNetRDF.dll
Syntax
public class Filter : IFilter, IUnaryOperator, ISparqlAlgebra

Constructors

| Improve this Doc View Source

Filter(ISparqlAlgebra, ISparqlFilter)

Creates a new Filter.
Declaration
public Filter(ISparqlAlgebra pattern, ISparqlFilter filter)
Parameters
Type Name Description
ISparqlAlgebra pattern Algebra the Filter applies over.
ISparqlFilter filter Filter to apply.

Properties

| Improve this Doc 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
System.Collections.Generic.IEnumerable<System.String>
| Improve this Doc 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
System.Collections.Generic.IEnumerable<System.String>
| Improve this Doc View Source

InnerAlgebra

Gets the Inner Algebra.
Declaration
public ISparqlAlgebra InnerAlgebra { get; }
Property Value
Type Description
ISparqlAlgebra
| Improve this Doc View Source

SparqlFilter

Gets the Filter to be used.
Declaration
public ISparqlFilter SparqlFilter { get; }
Property Value
Type Description
ISparqlFilter
| Improve this Doc View Source

Variables

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

Methods

| Improve this Doc View Source

Evaluate(SparqlEvaluationContext)

Applies the Filter over the results of evaluating the inner pattern.
Declaration
public BaseMultiset Evaluate(SparqlEvaluationContext context)
Parameters
Type Name Description
SparqlEvaluationContext context Evaluation Context.
Returns
Type Description
BaseMultiset
| Improve this Doc View Source

ToGraphPattern()

Converts the Algebra back to a Graph Pattern.
Declaration
public GraphPattern ToGraphPattern()
Returns
Type Description
GraphPattern
| Improve this Doc View Source

ToQuery()

Converts the Algebra back to a SPARQL Query.
Declaration
public SparqlQuery ToQuery()
Returns
Type Description
SparqlQuery
| Improve this Doc View Source

ToString()

Gets the String representation of the FILTER.
Declaration
public override string ToString()
Returns
Type Description
System.String
Overrides
System.Object.ToString()
| Improve this Doc View Source

Transform(IAlgebraOptimiser)

Transforms the Inner Algebra using the given Optimiser.
Declaration
public ISparqlAlgebra Transform(IAlgebraOptimiser optimiser)
Parameters
Type Name Description
IAlgebraOptimiser optimiser Optimiser.
Returns
Type Description
ISparqlAlgebra

Implements

Extension Methods