Class IfElseFunction

Class representing the SPARQL IF function.

Inheritance

object

IfElseFunction

Implements

ISparqlExpression

Inherited Members

object.Equals(object)

object.Equals(object, object)

object.GetHashCode()

object.GetType()

object.MemberwiseClone()

object.ReferenceEquals(object, object)

Namespace: VDS.RDF.Query.Expressions.Functions.Sparql

Assembly: dotNetRdf.dll

Syntax

public class IfElseFunction : ISparqlExpression

Constructors

IfElseFunction(ISparqlExpression, ISparqlExpression, ISparqlExpression)

Creates a new IF function.

Declaration

public IfElseFunction(ISparqlExpression condition, ISparqlExpression ifBranch, ISparqlExpression elseBranch)

Parameters

Type	Name	Description
ISparqlExpression	condition	Condition.
ISparqlExpression	ifBranch	Expression to evaluate if condition evaluates to true.
ISparqlExpression	elseBranch	Expression to evalaute if condition evaluates to false/error.

Properties

Arguments

Gets the Arguments of the Expression.

Declaration

public IEnumerable<ISparqlExpression> Arguments { get; }

Property Value

Type	Description
IEnumerable<ISparqlExpression>

CanParallelise

Gets whether an expression can safely be evaluated in parallel.

Declaration

public virtual bool CanParallelise { get; }

Property Value

Type	Description
bool

ConditionExpression

Get the condition to test.

Declaration

public ISparqlExpression ConditionExpression { get; }

Property Value

Type	Description
ISparqlExpression

FalseBranchExpression

Get the expression to evaluate if ConditionExpression evaluates to false.

Declaration

public ISparqlExpression FalseBranchExpression { get; }

Property Value

Type	Description
ISparqlExpression

Functor

Gets the Functor for the Expression.

Declaration

public string Functor { get; }

Property Value

Type	Description
string

TrueBranchExpression

Get the expression to evaluate if ConditionExpression evaluates to true.

Declaration

public ISparqlExpression TrueBranchExpression { get; }

Property Value

Type	Description
ISparqlExpression

Type

Gets the Expression Type.

Declaration

public SparqlExpressionType Type { get; }

Property Value

Type	Description
SparqlExpressionType

Variables

Gets the enumeration of variables used in the expression.

Declaration

public IEnumerable<string> Variables { get; }

Property Value

Type	Description
IEnumerable<string>

Methods

Accept<T>(ISparqlExpressionVisitor<T>)

Accept a ISparqlExpressionVisitor<T> by calling the appropriate method on its interface for this expression.

Declaration

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

Parameters

Type	Name	Description
ISparqlExpressionVisitor<T>	visitor	The visitor to be invoked.

Returns

Type	Description
T	The result of calling the method on the visitor.

Type Parameters

Name	Description
T	Type of result that the called method returns.

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

public 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.

ToString()

Gets the String representation of the function.

Declaration

public override string ToString()

Returns

Type	Description
string

Overrides

object.ToString()

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

ISparqlExpression

Extension Methods

Extensions.ToSafeString(object)

Extensions.AsEnumerable<T>(T)