Class BaseBinaryStringFunction

Abstract Base class for XPath Binary String functions.

Inheritance

object

BaseBinaryStringFunction

CompareFunction

ContainsFunction

EndsWithFunction

NormalizeUnicodeFunction

StartsWithFunction

SubstringAfterFunction

SubstringBeforeFunction

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.XPath.String

Assembly: dotNetRdf.dll

Syntax

public abstract class BaseBinaryStringFunction : ISparqlExpression

Constructors

BaseBinaryStringFunction(ISparqlExpression, ISparqlExpression, bool, Func<Uri, bool>)

Creates a new XPath Binary String function.

Declaration

protected BaseBinaryStringFunction(ISparqlExpression stringExpr, ISparqlExpression argExpr, bool allowNullArgument, Func<Uri, bool> argumentTypeValidator)

Parameters

Type	Name	Description
ISparqlExpression	stringExpr	Expression.
ISparqlExpression	argExpr	Argument.
bool	allowNullArgument	Whether the argument may be null.
Func<Uri, bool>	argumentTypeValidator	Type validator for the argument.

Fields

_allowNullArgument

Whether the argument can be null.

Declaration

protected bool _allowNullArgument

Field Value

Type	Description
bool

_arg

Argument expression.

Declaration

protected ISparqlExpression _arg

Field Value

Type	Description
ISparqlExpression

_argumentTypeValidator

Type validation function for the argument.

Declaration

protected Func<Uri, bool> _argumentTypeValidator

Field Value

Type	Description
Func<Uri, bool>

_expr

Expression the function applies over.

Declaration

protected ISparqlExpression _expr

Field Value

Type	Description
ISparqlExpression

Properties

AllowNullArgument

Get the flag that indicates if null arguments are allowed.

Declaration

public bool AllowNullArgument { get; }

Property Value

Type	Description
bool

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

Functor

Gets the Functor of the Expression.

Declaration

public abstract string Functor { get; }

Property Value

Type	Description
string

LeftExpression

Get the left child expression.

Declaration

public ISparqlExpression LeftExpression { get; }

Property Value

Type	Description
ISparqlExpression

RightExpression

Get the right child expression.

Declaration

public ISparqlExpression RightExpression { 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 Variables used in the function.

Declaration

public virtual 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 abstract 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 abstract 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 abstract string ToString()

Returns

Type	Description
string

Overrides

object.ToString()

Transform(IExpressionTransformer)

Transforms the Expression using the given Transformer.

Declaration

public abstract ISparqlExpression Transform(IExpressionTransformer transformer)

Parameters

Type	Name	Description
IExpressionTransformer	transformer	Expression Transformer.

Returns

Type	Description
ISparqlExpression

ValidateArgumentType(Uri)

Validate that the specified datatype is acceptable as a function argument datatype.

Declaration

public bool ValidateArgumentType(Uri datatype)

Parameters

Type	Name	Description
Uri	datatype	The datatype to be validated.

Returns

Type	Description
bool	True if the datatype is acceptable, false otherwise.

Implements

ISparqlExpression

Extension Methods

Extensions.ToSafeString(object)

Extensions.AsEnumerable<T>(T)