Class Service

Represents a Service Clause.
Inheritance
System.Object
Service
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 Service : ITerminalOperator, ISparqlAlgebra

Constructors

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Service(IToken, GraphPattern)

Creates a new Service clause with the given Endpoint Specifier and Graph Pattern.
Declaration
public Service(IToken endpointSpecifier, GraphPattern pattern)
Parameters
Type Name Description
IToken endpointSpecifier Endpoint Specifier.
GraphPattern pattern Graph Pattern.
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Service(IToken, GraphPattern, Boolean)

Creates a new Service clause with the given Endpoint Specifier and Graph Pattern.
Declaration
public Service(IToken endpointSpecifier, GraphPattern pattern, bool silent)
Parameters
Type Name Description
IToken endpointSpecifier Endpoint Specifier.
GraphPattern pattern Graph Pattern.
System.Boolean silent Whether Evaluation Errors are suppressed.

Properties

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EndpointSpecifier

Gets the Endpoint Specifier.
Declaration
public IToken EndpointSpecifier { get; }
Property Value
Type Description
IToken
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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>
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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>
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Pattern

Gets the Graph Pattern.
Declaration
public GraphPattern Pattern { get; }
Property Value
Type Description
GraphPattern
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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

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Evaluate(SparqlEvaluationContext)

Evaluates the Service Clause by generating instance(s) of SparqlRemoteEndpoint as required and issuing the query to the remote endpoint(s).
Declaration
public BaseMultiset Evaluate(SparqlEvaluationContext context)
Parameters
Type Name Description
SparqlEvaluationContext context Evaluation Context.
Returns
Type Description
BaseMultiset
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ToGraphPattern()

Converts the Algebra into a Graph Pattern.
Declaration
public GraphPattern ToGraphPattern()
Returns
Type Description
GraphPattern
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ToQuery()

Converts the Algebra back to a SPARQL Query.
Declaration
public SparqlQuery ToQuery()
Returns
Type Description
SparqlQuery
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ToString()

Gets the String representation of the Algebra.
Declaration
public override string ToString()
Returns
Type Description
System.String
Overrides
System.Object.ToString()

Implements

Extension Methods