Class SparqlOperators

Registry of SPARQL Operators.

Inheritance

object

SparqlOperators

Inherited Members

object.Equals(object)

object.Equals(object, object)

object.GetHashCode()

object.GetType()

object.MemberwiseClone()

object.ReferenceEquals(object, object)

object.ToString()

Namespace: VDS.RDF.Query.Operators

Assembly: dotNetRdf.dll

Syntax

public static class SparqlOperators

Methods

AddOperator(ISparqlOperator)

Registers a new operator.

Declaration

public static void AddOperator(ISparqlOperator op)

Parameters

Type	Name	Description
ISparqlOperator	op	Operator.

GetOperators()

Gets all registered Operators.

Declaration

public static IEnumerable<ISparqlOperator> GetOperators()

Returns

Type	Description
IEnumerable<ISparqlOperator>

GetOperators(SparqlOperatorType)

Gets all registered operators for the given Operator Type.

Declaration

public static IEnumerable<ISparqlOperator> GetOperators(SparqlOperatorType type)

Parameters

Type	Name	Description
SparqlOperatorType	type	Operator Type.

Returns

Type	Description
IEnumerable<ISparqlOperator>

IsRegistered(ISparqlOperator)

Returns whether the given operator is registered.

Declaration

public static bool IsRegistered(ISparqlOperator op)

Parameters

Type	Name	Description
ISparqlOperator	op	Operator.

Returns

Type	Description
bool

Remarks

Checking is done both by reference and instance type so you can check if an operator is registered even if you don't have the actual reference to the instance that registered.

RemoveOperator(ISparqlOperator)

Removes the registration of an operator by instance reference.

Declaration

public static void RemoveOperator(ISparqlOperator op)

Parameters

Type	Name	Description
ISparqlOperator	op	Operator Reference.

RemoveOperatorByType(ISparqlOperator)

Removes the registration of an operator by instance type of the operator.

Declaration

public static void RemoveOperatorByType(ISparqlOperator op)

Parameters

Type	Name	Description
ISparqlOperator	op	Operator.

Reset()

Resets Operator registry to default state.

Declaration

public static void Reset()

TryGetOperator(SparqlOperatorType, bool, out ISparqlOperator, params IValuedNode[])

Tries to return the operator which applies for the given inputs.

Declaration

public static bool TryGetOperator(SparqlOperatorType type, bool strict, out ISparqlOperator op, params IValuedNode[] ns)

Parameters

Type	Name	Description
SparqlOperatorType	type	Operator Type.
bool	strict	If true, return only operators specified by the SPARQL specification. If false, also return operators that extend the SPARQL specification.
ISparqlOperator	op	Operator.
IValuedNode[]	ns	Inputs.

Returns

Type	Description
bool