Class QNameOutputMapper

Class for representing Mappings from URIs to QNames.

Inheritance
object
NamespaceMapper
QNameOutputMapper
ThreadSafeQNameOutputMapper
Implements
Inherited Members
Namespace: VDS.RDF
Assembly: dotNetRdf.dll
Syntax
public class QNameOutputMapper : NamespaceMapper, INamespaceMapper, IDisposable
Remarks

Used primarily in outputting RDF syntax.

Constructors

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QNameOutputMapper(INamespaceMapper, IUriFactory)

Creates a new QName Output Mapper using the given Namespace Map.

Declaration
public QNameOutputMapper(INamespaceMapper nsmapper, IUriFactory uriFactory = null)
Parameters
Type Name Description
INamespaceMapper nsmapper

Namespace Map.
IUriFactory uriFactory

The factory to use when creating new Uri instances. If not specified, defaults to Root.
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QNameOutputMapper(IUriFactory)

Creates a new QName Output Mapper which has an empty Namespace Map.

Declaration
public QNameOutputMapper(IUriFactory uriFactory = null)
Parameters
Type Name Description
IUriFactory uriFactory

The factory to use when creating new Uri instances. If not specified, defaults to Root.

Fields

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Mapping

Mapping of URIs to QNames.

Declaration
protected readonly MultiDictionary<string, QNameMapping> Mapping
Field Value
Type Description
MultiDictionary<string, QNameMapping>

Methods

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AddToCache(string, QNameMapping)

Adds a QName mapping to the cache.

Declaration
protected virtual void AddToCache(string uri, QNameMapping mapping)
Parameters
Type Name Description
string uri

URI.
QNameMapping mapping

Mapping.
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ReduceToQName(string, out string, Func<string, bool>)

A Function which attempts to reduce a Uri to a QName.

Declaration
public override bool ReduceToQName(string uri, out string qname, Func<string, bool> validationFunction = null)
Parameters
Type Name Description
string uri

The Uri to attempt to reduce.
string qname

The value to output the QName to if possible.
Func<string, bool> validationFunction

OPTIONAL: a function which when applied to a candidate QName string returns true if the string is acceptable, and false otherwise.
Returns
Type Description
bool
Overrides
Remarks

This function will return a Boolean indicated whether it succeeded in reducing the Uri to a QName. If it did then the out parameter qname will contain the reduction, otherwise it will be the empty string.

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ReduceToQName(string, out string, out string)

A Function which attempts to reduce a Uri to a QName and issues a Temporary Namespace if required.

Declaration
public bool ReduceToQName(string uri, out string qName, out string tempNamespace)
Parameters
Type Name Description
string uri

The Uri to attempt to reduce.
string qName

The value to output the QName to if possible.
string tempNamespace

The Temporary Namespace issued (if any).
Returns
Type Description
bool
Remarks

This function will always returns a possible QName for the URI if the format of the URI permits it. It doesn't guarantee that the QName will be valid for the syntax it is being written to - it is up to implementers of writers to validate the QNames returned.

Where necessary a Temporary Namespace will be issued and the tempNamespace parameter will be set to the prefix of the new temporary namespace.

Implements

Extension Methods