Class ChainFilter

Generic Filter for use where multiple Filters are applied on a single Graph Pattern.

Inheritance
object
ChainFilter
Implements
Inherited Members
Namespace: VDS.RDF.Query.Filters
Assembly: dotNetRdf.dll
Syntax
public class ChainFilter : ISparqlFilter, IVisitable, IProcessable

Constructors

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ChainFilter(IEnumerable<ISparqlFilter>)

Creates a new Chain Filter.

Declaration
public ChainFilter(IEnumerable<ISparqlFilter> filters)
Parameters
Type Name Description
IEnumerable<ISparqlFilter> filters

Filters.
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ChainFilter(ISparqlFilter, IEnumerable<ISparqlFilter>)

Creates a new Chain Filter.

Declaration
public ChainFilter(ISparqlFilter first, IEnumerable<ISparqlFilter> rest)
Parameters
Type Name Description
ISparqlFilter first

First Filter.
IEnumerable<ISparqlFilter> rest

Additional Filters.
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ChainFilter(ISparqlFilter, ISparqlFilter)

Creates a new Chain Filter.

Declaration
public ChainFilter(ISparqlFilter first, ISparqlFilter second)
Parameters
Type Name Description
ISparqlFilter first

First Filter.
ISparqlFilter second

Second Filter.

Properties

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Expression

Gets the Inner Expression used by the Chained Filters.

Declaration
public ISparqlExpression Expression { get; }
Property Value
Type Description
ISparqlExpression
Remarks

Equivalent to ANDing all the Chained Filters expressions.

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Filters

Get the filters to be chained.

Declaration
public IEnumerable<ISparqlFilter> Filters { get; }
Property Value
Type Description
IEnumerable<ISparqlFilter>
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Variables

Gets the enumeration of Variables used in the chained Filters.

Declaration
public IEnumerable<string> Variables { get; }
Property Value
Type Description
IEnumerable<string>

Methods

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Accept<T>(ISparqlAlgebraVisitor<T>)

Accept a simple algebra visitor.

Declaration
public T Accept<T>(ISparqlAlgebraVisitor<T> visitor)
Parameters
Type Name Description
ISparqlAlgebraVisitor<T> visitor

The visitor implementation.
Returns
Type Description
T
Type Parameters
Name Description
T

The type returned by the Visit methods of the visitor.
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Accept<TResult, TContext>(ISparqlQueryAlgebraProcessor<TResult, TContext>, TContext)

Called by an algebra visitor to process an item by invoking the appropriate method on the processor passed in.

Declaration
public TResult Accept<TResult, TContext>(ISparqlQueryAlgebraProcessor<TResult, TContext> processor, TContext context)
Parameters
Type Name Description
ISparqlQueryAlgebraProcessor<TResult, TContext> processor

The processor to invoke.
TContext context

The context to pass to the processor.
Returns
Type Description
TResult

The result of invoking the processor method.
Type Parameters
Name Description
TResult

The type of result returned by the processor.
TContext

The type of the context object to be provided to the processor.
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Add(ISparqlFilter)

Adds an additional Filter to the Filter Chain.

Declaration
protected void Add(ISparqlFilter filter)
Parameters
Type Name Description
ISparqlFilter filter

A Filter to add.
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ToString()

Gets the String representation of the Filters.

Declaration
public override string ToString()
Returns
Type Description
string
Overrides

Implements

Extension Methods