Class Service

Represents a Service Clause.

Inheritance
object
Service
Implements
Inherited Members
Namespace: VDS.RDF.Query.Algebra
Assembly: dotNetRdf.dll
Syntax
public class Service : ITerminalOperator, ISparqlAlgebra, IVisitable, IProcessable

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, bool)

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.
bool 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
IEnumerable<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
IEnumerable<string>
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Pattern

Gets the Graph Pattern.

Declaration
public GraphPattern Pattern { get; }
Property Value
Type Description
GraphPattern
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Silent

Get whether evaluation errors are suppressed.

Declaration
public bool Silent { get; }
Property Value
Type Description
bool
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Variables

Gets the Variables used in the Algebra.

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

Methods

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Accept<T>(ISparqlAlgebraVisitor<T>)

Accept a simple algebra visitor.

Declaration
public T Accept<T>(ISparqlAlgebraVisitor<T> visitor)
Parameters
Type Name Description
ISparqlAlgebraVisitor<T> visitor

The visitor implementation.
Returns
Type Description
T
Type Parameters
Name Description
T

The type returned by the Visit methods of the visitor.
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Accept<TResult, TContext>(ISparqlQueryAlgebraProcessor<TResult, TContext>, TContext)

Called by an algebra visitor to process an item by invoking the appropriate method on the processor passed in.

Declaration
public TResult Accept<TResult, TContext>(ISparqlQueryAlgebraProcessor<TResult, TContext> processor, TContext context)
Parameters
Type Name Description
ISparqlQueryAlgebraProcessor<TResult, TContext> processor

The processor to invoke.
TContext context

The context to pass to the processor.
Returns
Type Description
TResult

The result of invoking the processor method.
Type Parameters
Name Description
TResult

The type of result returned by the processor.
TContext

The type of the context object to be provided to the processor.
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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
string
Overrides

Implements

Extension Methods