Class RegexFunction

Class representing the SPARQL REGEX function.

Inheritance

object

RegexFunction

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.Boolean

Assembly: dotNetRdf.dll

Syntax

public class RegexFunction : ISparqlExpression

Constructors

RegexFunction(ISparqlExpression, ISparqlExpression)

Creates a new Regex() function expression.

Declaration

public RegexFunction(ISparqlExpression text, ISparqlExpression pattern)

Parameters

Type	Name	Description
ISparqlExpression	text	Text to apply the Regular Expression to.
ISparqlExpression	pattern	Regular Expression Pattern.

RegexFunction(ISparqlExpression, ISparqlExpression, ISparqlExpression)

Creates a new Regex() function expression.

Declaration

public RegexFunction(ISparqlExpression text, ISparqlExpression pattern, ISparqlExpression options)

Parameters

Type	Name	Description
ISparqlExpression	text	Text to apply the Regular Expression to.
ISparqlExpression	pattern	Regular Expression Pattern.
ISparqlExpression	options	Regular Expression Options.

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

CompiledRegex

Get the compiled constant regular expression. This is only non-null if the pattern expression is constant and the options expression is either null or constant.

Declaration

public Regex CompiledRegex { get; }

Property Value

Type	Description
Regex

FixedOptions

True if OptionsExpression is a constant.

Declaration

public bool FixedOptions { get; }

Property Value

Type	Description
bool

FixedPattern

True if PatternExpression is a constant.

Declaration

public bool FixedPattern { get; }

Property Value

Type	Description
bool

Functor

Gets the Functor of the Expression.

Declaration

public string Functor { get; }

Property Value

Type	Description
string

OptionsExpression

Get the expression that yields the options to apply to the regular expression evaulation.

Declaration

public ISparqlExpression OptionsExpression { get; }

Property Value

Type	Description
ISparqlExpression

Pattern

Get the pattern part of the regular expression if FixedPattern is true.

Declaration

public string Pattern { get; }

Property Value

Type	Description
string

PatternExpression

Get the expression that yields the regular expression pattern to use.

Declaration

public ISparqlExpression PatternExpression { get; }

Property Value

Type	Description
ISparqlExpression

TextExpression

Get the expression that yields the text to be tested.

Declaration

public ISparqlExpression TextExpression { get; }

Property Value

Type	Description
ISparqlExpression

Type

Gets the Type of the Expression.

Declaration

public SparqlExpressionType Type { get; }

Property Value

Type	Description
SparqlExpressionType

Variables

Gets the enumeration of Variables involved in this 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.

GetOptions(INode, bool)

Configures the Options for the Regular Expression.

Declaration

public static RegexOptions GetOptions(INode n, bool throwErrors)

Parameters

Type	Name	Description
INode	n	Node detailing the Options.
bool	throwErrors	Whether errors should be thrown or suppressed.

Returns

Type	Description
RegexOptions

ToString()

Gets the String representation of this Expression.

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)