Interface ISparqlExpression

Interface for SPARQL Expression Terms that can be used in Expression Trees while evaluating Sparql Queries.

Namespace: VDS.RDF.Query.Expressions

Assembly: dotNetRdf.dll

Syntax

public interface ISparqlExpression

Properties

Arguments

Gets the Arguments of this Expression.

Declaration

IEnumerable<ISparqlExpression> Arguments { get; }

Property Value

Type	Description
System.Collections.Generic.IEnumerable<T><ISparqlExpression>

CanParallelise

Gets whether an expression can safely be evaluated in parallel.

Declaration

bool CanParallelise { get; }

Property Value

Type	Description
System.Boolean

Functor

Gets the Function Name or Operator Symbol - function names may be URIs of Keywords or the empty string in the case of primary expressions.

Declaration

string Functor { get; }

Property Value

Type	Description
string

Type

Gets the SPARQL Expression Type.

Declaration

SparqlExpressionType Type { get; }

Property Value

Type	Description
SparqlExpressionType

Variables

Gets an enumeration of all the Variables used in an expression.

Declaration

IEnumerable<string> Variables { get; }

Property Value

Type	Description
System.Collections.Generic.IEnumerable<T><string>

Methods

Accept<T>(ISparqlExpressionVisitor<T>)

Declaration

T Accept<T>(ISparqlExpressionVisitor<T> visitor)

Parameters

Type	Name	Description
ISparqlExpressionVisitor<T>	visitor

Returns

Type	Description
T

Type Parameters

Name	Description
T

Accept<TResult, TContext, TBinding>(ISparqlExpressionProcessor<TResult, TContext, TBinding>, TContext, TBinding)

Accept a ISparqlExpressionProcessor<TResult, TContext, TBinding> by calling the appropriate method on its interface for this expression.

Declaration

TResult Accept<TResult, TContext, TBinding>(ISparqlExpressionProcessor<TResult, TContext, TBinding> processor, TContext context, TBinding binding)

Parameters

Type	Name	Description
ISparqlExpressionProcessor<TResult, TContext, TBinding>	processor	The processor to be invoked.
TContext	context	The context object to use for processing.
TBinding	binding	The binding to be processed.

Returns

Type	Description
TResult

Type Parameters

Name	Description
TResult	Type of result that the process method returns.
TContext	The type of the context parameter to the process method.
TBinding	The type of the binding parameter of the process method.

Transform(IExpressionTransformer)

Transforms the arguments of the expression using the given transformer.

Declaration

ISparqlExpression Transform(IExpressionTransformer transformer)

Parameters

Type	Name	Description
IExpressionTransformer	transformer	Expression Transformer.

Returns

Type	Description
ISparqlExpression

Extension Methods

Extensions.ToSafeString(object)

Extensions.AsEnumerable<T>(T)