Class CoalesceFunction

Class representing the SPARQL COALESCE() function.
Inheritance
System.Object
CoalesceFunction
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.Sparql
Assembly: dotNetRDF.dll
Syntax
public class CoalesceFunction : ISparqlExpression

Constructors

| Improve this Doc View Source

CoalesceFunction(IEnumerable<ISparqlExpression>)

Creates a new COALESCE function with the given expressions as its arguments.
Declaration
public CoalesceFunction(IEnumerable<ISparqlExpression> expressions)
Parameters
Type Name Description
System.Collections.Generic.IEnumerable<ISparqlExpression> expressions Argument expressions.

Properties

| Improve this Doc View Source

Arguments

Gets the Arguments of the Expression.
Declaration
public IEnumerable<ISparqlExpression> Arguments { get; }
Property Value
Type Description
System.Collections.Generic.IEnumerable<ISparqlExpression>
| Improve this Doc View Source

CanParallelise

Gets whether an expression can safely be evaluated in parallel.
Declaration
public virtual bool CanParallelise { get; }
Property Value
Type Description
System.Boolean
| Improve this Doc View Source

Functor

Gets the Functor of the Expression.
Declaration
public string Functor { get; }
Property Value
Type Description
System.String
| Improve this Doc View Source

Type

Gets the Type of the Expression.
Declaration
public SparqlExpressionType Type { get; }
Property Value
Type Description
SparqlExpressionType
| Improve this Doc View Source

Variables

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

Methods

| Improve this Doc View Source

Evaluate(SparqlEvaluationContext, Int32)

Gets the value of the expression as evaluated in the given 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
| Improve this Doc View Source

ToString()

Gets the String representation of the function.
Declaration
public override string ToString()
Returns
Type Description
System.String
Overrides
System.Object.ToString()
| Improve this Doc View Source

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