Interface ISparqlOrderBy

Interface for classes that represent SPARQL ORDER BY clauses.
Inherited Members
System.Collections.Generic.IComparer<VDS.RDF.Query.Algebra.ISet>.Compare(VDS.RDF.Query.Algebra.ISet, VDS.RDF.Query.Algebra.ISet)
Namespace: VDS.RDF.Query.Ordering
Assembly: dotNetRDF.dll
Syntax
public interface ISparqlOrderBy : IComparer<ISet>
Remarks
A SPARQL Order By clause provides a list of orderings, when parsed into the dotNetRDF model this is represented as a single ISparqlOrderBy for the first term in the clause chained to ISparqlOrderBy's for each subsequent term via the Child property.

Properties

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Child

Gets/Sets the Child Ordering that applies if the two Objects are considered equal.
Declaration
ISparqlOrderBy Child { get; set; }
Property Value
Type Description
ISparqlOrderBy
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Context

Sets the Evaluation Context for the Order By.
Declaration
SparqlEvaluationContext Context { set; }
Property Value
Type Description
SparqlEvaluationContext
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Descending

Sets whether the Ordering is Descending.
Declaration
bool Descending { get; set; }
Property Value
Type Description
System.Boolean
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Expression

Gets the Expression used to do the Ordering.
Declaration
ISparqlExpression Expression { get; }
Property Value
Type Description
ISparqlExpression
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IsSimple

Gets whether the Ordering is simple (i.e. applies on variables only).
Declaration
bool IsSimple { get; }
Property Value
Type Description
System.Boolean
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Variables

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

Methods

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GetComparer(IMatchTriplePattern)

Generates a Comparer than can be used to do Ordering based on the given Triple Pattern.
Declaration
IComparer<Triple> GetComparer(IMatchTriplePattern pattern)
Parameters
Type Name Description
IMatchTriplePattern pattern Triple Pattern.
Returns
Type Description
System.Collections.Generic.IComparer<Triple>

Extension Methods