Class SubstringFunction

Represents the ARQ afn:substring() function which is a sub-string with Java semantics.
Inheritance
System.Object
SubstringFunction
Implements
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.Expressions.Functions.Arq
Assembly: dotNetRDF.dll
Syntax
public class SubstringFunction : ISparqlExpression

Constructors

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SubstringFunction(ISparqlExpression, ISparqlExpression)

Creates a new ARQ substring function.
Declaration
public SubstringFunction(ISparqlExpression stringExpr, ISparqlExpression startExpr)
Parameters
Type Name Description
ISparqlExpression stringExpr Expression.
ISparqlExpression startExpr Expression giving an index at which to start the substring.
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SubstringFunction(ISparqlExpression, ISparqlExpression, ISparqlExpression)

Creates a new ARQ substring function.
Declaration
public SubstringFunction(ISparqlExpression stringExpr, ISparqlExpression startExpr, ISparqlExpression endExpr)
Parameters
Type Name Description
ISparqlExpression stringExpr Expression.
ISparqlExpression startExpr Expression giving an index at which to start the substring.
ISparqlExpression endExpr Expression giving an index at which to end the substring.

Properties

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Arguments

Gets the Arguments of the Expression.
Declaration
public IEnumerable<ISparqlExpression> Arguments { get; }
Property Value
Type Description
System.Collections.Generic.IEnumerable<ISparqlExpression>
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CanParallelise

Gets whether an expression can safely be evaluated in parallel.
Declaration
public virtual bool CanParallelise { get; }
Property Value
Type Description
System.Boolean
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Functor

Gets the Functor of the Expression.
Declaration
public string Functor { get; }
Property Value
Type Description
System.String
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Type

Gets the Type of the Expression.
Declaration
public SparqlExpressionType Type { get; }
Property Value
Type Description
SparqlExpressionType
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Variables

Gets the Variables used in the function.
Declaration
public IEnumerable<string> Variables { get; }
Property Value
Type Description
System.Collections.Generic.IEnumerable<System.String>

Methods

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Evaluate(SparqlEvaluationContext, Int32)

Gets the value of the function in the given Evaluation Context for the given Binding ID.
Declaration
public IValuedNode Evaluate(SparqlEvaluationContext context, int bindingID)
Parameters
Type Name Description
SparqlEvaluationContext context Evaluation Context.
System.Int32 bindingID Binding ID.
Returns
Type Description
IValuedNode
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ToString()

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

Transforms the Expression using the given Transformer.
Declaration
public ISparqlExpression Transform(IExpressionTransformer transformer)
Parameters
Type Name Description
IExpressionTransformer transformer Expression Transformer.
Returns
Type Description
ISparqlExpression

Implements

Extension Methods