Interface ISparqlCustomExpressionFactory
Interface for implementing SPARQL custom expression factories which turn URI specified functions into SPARQL Expressions.
Namespace: VDS.RDF.Query.Expressions
Assembly: dotNetRdf.dll
Syntax
public interface ISparqlCustomExpressionFactoryProperties
| Edit this page View SourceAvailableExtensionAggregates
Gets the Extension Aggregate URIs that this Factory provides.
Declaration
IEnumerable<Uri> AvailableExtensionAggregates { get; }Property Value
| Type | Description |
|---|---|
| IEnumerable<Uri> |
AvailableExtensionFunctions
Gets the Extension Function URIs that this Factory provides.
Declaration
IEnumerable<Uri> AvailableExtensionFunctions { get; }Property Value
| Type | Description |
|---|---|
| IEnumerable<Uri> |
Methods
| Edit this page View SourceTryCreateExpression(Uri, List<ISparqlExpression>, Dictionary<string, ISparqlExpression>, out ISparqlExpression)
Tries to Create a SPARQL Expression for a function with the given URI and set of arguments.
Declaration
bool TryCreateExpression(Uri u, List<ISparqlExpression> args, Dictionary<string, ISparqlExpression> scalarArguments, out ISparqlExpression expr)Parameters
| Type | Name | Description |
|---|---|---|
| Uri | u | URI of the function. |
| List<ISparqlExpression> | args | List of Arguments. |
| Dictionary<string, ISparqlExpression> | scalarArguments | Dictionary of Scalar Arguments which are supportable by aggregates when Syntax is set to SPARQL 1.1 Extended. |
| ISparqlExpression | expr | Resulting Expression if able to generate. |
Returns
| Type | Description |
|---|---|
| bool | True if an expression is generated, false if not. |