Interface ISparqlOrderBy

Interface for classes that represent SPARQL ORDER BY clauses.

Namespace: VDS.RDF.Query.Ordering
Assembly: dotNetRdf.dll
Syntax
public interface ISparqlOrderBy
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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Descending

Sets whether the Ordering is Descending.

Declaration
bool Descending { get; set; }
Property Value
Type Description
bool
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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
bool
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Variables

Gets all the Variables used in the Ordering.

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

Methods

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GetComparer(IMatchTriplePattern, ISparqlNodeComparer)

Generates a Comparer than can be used to do Ordering based on the given Triple Pattern.

Declaration
IComparer<Triple> GetComparer(IMatchTriplePattern pattern, ISparqlNodeComparer nodeComparer)
Parameters
Type Name Description
IMatchTriplePattern pattern

Triple Pattern.
ISparqlNodeComparer nodeComparer

The node comparer to use.
Returns
Type Description
IComparer<Triple>

Extension Methods