Class FilterPattern

Class for representing Filter Patterns in SPARQL Queries.

Inheritance

System.Object

BaseTriplePattern

FilterPattern

Implements

IFilterPattern

ITriplePattern

System.IComparable<T><ITriplePattern>

IProcessable

IVisitable

System.IComparable<T><IFilterPattern>

System.IComparable<T><FilterPattern>

Inherited Members

BaseTriplePattern._vars

BaseTriplePattern.Variables

BaseTriplePattern.CompareTo(ITriplePattern)

object.Equals(object)

object.Equals(object, object)

object.GetHashCode()

object.GetType()

object.MemberwiseClone()

object.ReferenceEquals(object, object)

Namespace: VDS.RDF.Query.Patterns

Assembly: dotNetRdf.dll

Syntax

public class FilterPattern : BaseTriplePattern, IFilterPattern, ITriplePattern, IComparable<ITriplePattern>, IProcessable, IVisitable, IComparable<IFilterPattern>, IComparable<FilterPattern>

Remarks

A Filter Pattern is any FILTER clause that can be executed during the process of executing Triple Patterns rather than after all the Triple Patterns and Child Graph Patterns have been executed.

Constructors

FilterPattern(ISparqlFilter)

Creates a new Filter Pattern with the given Filter.

Declaration

public FilterPattern(ISparqlFilter filter)

Parameters

Type	Name	Description
ISparqlFilter	filter	Filter.

Remarks

A Filter Pattern is any FILTER clause that can be executed during the process of executing Triple Patterns rather than after all the Triple Patterns and Child Graph Patterns have been executed.

Properties

Filter

Gets the Filter that this Pattern uses.

Declaration

public ISparqlFilter Filter { get; }

Property Value

Type	Description
ISparqlFilter

Remarks

A Filter Pattern is any FILTER clause that can be executed during the process of executing Triple Patterns rather than after all the Triple Patterns and Child Graph Patterns have been executed.

FixedVariables

Returns the empty enumerable as don't know which variables will be bound.

Declaration

public override IEnumerable<string> FixedVariables { get; }

Property Value

Type	Description
System.Collections.Generic.IEnumerable<T><string>

Overrides

BaseTriplePattern.FixedVariables

Remarks

A Filter Pattern is any FILTER clause that can be executed during the process of executing Triple Patterns rather than after all the Triple Patterns and Child Graph Patterns have been executed.

FloatingVariables

Returns the empty enumerable as don't know which variables will be bound.

Declaration

public override IEnumerable<string> FloatingVariables { get; }

Property Value

Type	Description
System.Collections.Generic.IEnumerable<T><string>

Overrides

BaseTriplePattern.FloatingVariables

Remarks

A Filter Pattern is any FILTER clause that can be executed during the process of executing Triple Patterns rather than after all the Triple Patterns and Child Graph Patterns have been executed.

HasNoBlankVariables

Returns true as a FILTER cannot contain blank variables.

Declaration

public override bool HasNoBlankVariables { get; }

Property Value

Type	Description
System.Boolean

Overrides

BaseTriplePattern.HasNoBlankVariables

Remarks

Technically blank nodes may appear in a FILTER as part of an EXISTS/NOT EXISTS clause but in that case they would not be visible outside of the FILTER and so are not relevant.

IsAcceptAll

Returns that the Pattern is not an accept all (since it's a Filter).

Declaration

public override bool IsAcceptAll { get; }

Property Value

Type	Description
System.Boolean

Overrides

BaseTriplePattern.IsAcceptAll

Remarks

A Filter Pattern is any FILTER clause that can be executed during the process of executing Triple Patterns rather than after all the Triple Patterns and Child Graph Patterns have been executed.

PatternType

Gets the Pattern Type.

Declaration

public override TriplePatternType PatternType { get; }

Property Value

Type	Description
TriplePatternType

Overrides

BaseTriplePattern.PatternType

Remarks

A Filter Pattern is any FILTER clause that can be executed during the process of executing Triple Patterns rather than after all the Triple Patterns and Child Graph Patterns have been executed.

UsesDefaultDataset

Gets whether the Pattern uses the Default Dataset.

Declaration

public override bool UsesDefaultDataset { get; }

Property Value

Type	Description
System.Boolean

Overrides

BaseTriplePattern.UsesDefaultDataset

Remarks

A Filter Pattern is any FILTER clause that can be executed during the process of executing Triple Patterns rather than after all the Triple Patterns and Child Graph Patterns have been executed.

Methods

Accept<T>(ISparqlAlgebraVisitor<T>)

Declaration

public override T Accept<T>(ISparqlAlgebraVisitor<T> visitor)

Parameters

Type	Name	Description
ISparqlAlgebraVisitor<T>	visitor

Returns

Type	Description
T

Type Parameters

Name	Description
T

Overrides

VDS.RDF.Query.Patterns.BaseTriplePattern.Accept<T>(VDS.RDF.Query.ISparqlAlgebraVisitor<T>)

Remarks

A Filter Pattern is any FILTER clause that can be executed during the process of executing Triple Patterns rather than after all the Triple Patterns and Child Graph Patterns have been executed.

Accept<TResult, TContext>(ISparqlQueryAlgebraProcessor<TResult, TContext>, TContext)

Declaration

public override TResult Accept<TResult, TContext>(ISparqlQueryAlgebraProcessor<TResult, TContext> processor, TContext context)

Parameters

Type	Name	Description
ISparqlQueryAlgebraProcessor<TResult, TContext>	processor
TContext	context

Returns

Type	Description
TResult

Type Parameters

Name	Description
TResult
TContext

Overrides

VDS.RDF.Query.Patterns.BaseTriplePattern.Accept<TResult, TContext>(VDS.RDF.Query.ISparqlQueryAlgebraProcessor<TResult, TContext>, TContext)

Remarks

A Filter Pattern is any FILTER clause that can be executed during the process of executing Triple Patterns rather than after all the Triple Patterns and Child Graph Patterns have been executed.

CompareTo(FilterPattern)

Compares a filter pattern to another.

Declaration

public int CompareTo(FilterPattern other)

Parameters

Type	Name	Description
FilterPattern	other	Pattern.

Returns

Type	Description
int

Remarks

A Filter Pattern is any FILTER clause that can be executed during the process of executing Triple Patterns rather than after all the Triple Patterns and Child Graph Patterns have been executed.

CompareTo(IFilterPattern)

Compares a filter pattern to another.

Declaration

public int CompareTo(IFilterPattern other)

Parameters

Type	Name	Description
IFilterPattern	other	Pattern.

Returns

Type	Description
int

Remarks

A Filter Pattern is any FILTER clause that can be executed during the process of executing Triple Patterns rather than after all the Triple Patterns and Child Graph Patterns have been executed.

ToString()

Returns the string representation of the Pattern.

Declaration

public override string ToString()

Returns

Type	Description
string

Overrides

BaseTriplePattern.ToString()

Remarks

A Filter Pattern is any FILTER clause that can be executed during the process of executing Triple Patterns rather than after all the Triple Patterns and Child Graph Patterns have been executed.

Implements

IFilterPattern

ITriplePattern

System.IComparable<T>

IProcessable

IVisitable

System.IComparable<T>

System.IComparable<T>

Extension Methods

Extensions.ToSafeString(object)

Extensions.AsEnumerable<T>(T)