Class NodeFactory

A default implementation of a Node Factory which generates Nodes unrelated to Graphs (wherever possible we suggest using a Graph based implementation instead).

Inheritance

object

NodeFactory

Implements

INodeFactory

Inherited Members

object.Equals(object)

object.Equals(object, object)

object.GetHashCode()

object.GetType()

object.MemberwiseClone()

object.ReferenceEquals(object, object)

object.ToString()

Namespace: VDS.RDF

Assembly: dotNetRdf.dll

Syntax

public class NodeFactory : INodeFactory

Constructors

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NodeFactory()

Creates a new Node Factory with default settings.

Declaration

public NodeFactory()

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NodeFactory(Uri, INamespaceMapper, bool, IUriFactory)

Creates a new Node Factory.

Declaration

[Obsolete("Replaced by NodeFactory(NodeFactoryOptions, INamespaceMapper, IUriFactory)")]
public NodeFactory(Uri baseUri = null, INamespaceMapper namespaceMap = null, bool normalizeLiteralValues = false, IUriFactory uriFactory = null)

Parameters

Type	Name	Description
Uri	baseUri	The initial base URI to use for the resolution of relative URI references. Defaults to null.
INamespaceMapper	namespaceMap	The namespace map to use for the resolution of QNames. If not specified, a default NamespaceMapper instance will be created.
bool	normalizeLiteralValues	Whether or not to normalize the value strings of literal nodes.
IUriFactory	uriFactory	The factory to use to create URIs. Defaults to the root UriFactory instance.

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NodeFactory(NodeFactoryOptions, INamespaceMapper, IUriFactory)

Creates a new Node Factory.

Declaration

public NodeFactory(NodeFactoryOptions options, INamespaceMapper namespaceMap = null, IUriFactory uriFactory = null)

Parameters

Type	Name	Description
NodeFactoryOptions	options	Configuration options for this node factory.
INamespaceMapper	namespaceMap	The namespace map to use for the resolution of QNames. If not specified, a default NamespaceMapper instance will be created.
IUriFactory	uriFactory	The factory to use to create URIs. Defaults to the root UriFactory instance.

Properties

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BaseUri

Get or set the base URI used to resolve relative URI references.

Declaration

public Uri BaseUri { get; set; }

Property Value

Type	Description
Uri

Remarks

If BaseUri is null, attempting to invoke CreateUriNode(Uri) with a relative URI or CreateUriNode(string) with a QName that resolves to a relative URI will result in a RdfException being raised.

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LanguageTagValidation

Get or set the type of validation to apply to language tags when creating language-tagged literal nodes.

Declaration

public LanguageTagValidationMode LanguageTagValidation { get; set; }

Property Value

Type	Description
LanguageTagValidationMode

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NamespaceMap

Get the namespace map for this node factory.

Declaration

public INamespaceMapper NamespaceMap { get; }

Property Value

Type	Description
INamespaceMapper

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NormalizeLiteralValues

Get or set the flag that controls whether the value strings of literal nodes should be normalized on creation.

Declaration

public bool NormalizeLiteralValues { get; set; }

Property Value

Type	Description
bool

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UriFactory

Get or set the factory to use when creating URIs.

Declaration

public IUriFactory UriFactory { get; set; }

Property Value

Type	Description
IUriFactory

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ValidateLanguageSpecifiers

Get or set the flag that controls whether or not language tags are validated when creating language-tagged literal nodes.

Declaration

[Obsolete("Use LanguageTagValidation to set the validation mode.")]
public bool ValidateLanguageSpecifiers { get; set; }

Property Value

Type	Description
bool

Remarks

This property is now deprecated and replaced by LanguageTagValidation. Setting this property to 'true' will set LanguageTagValidation to Turtle. Setting this property to 'false' will set LanguageTagValidation to None.

Methods

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CreateBlankNode()

Creates a Blank Node with a new automatically generated ID.

Declaration

public IBlankNode CreateBlankNode()

Returns

Type	Description
IBlankNode

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CreateBlankNode(string)

Creates a Blank Node with the given Node ID.

Declaration

public IBlankNode CreateBlankNode(string nodeId)

Parameters

Type	Name	Description
string	nodeId	Node ID.

Returns

Type	Description
IBlankNode

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CreateGraphLiteralNode()

Creates a Graph Literal Node which represents the empty Sub-graph.

Declaration

public IGraphLiteralNode CreateGraphLiteralNode()

Returns

Type	Description
IGraphLiteralNode

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CreateGraphLiteralNode(IGraph)

Creates a Graph Literal Node which represents the given Sub-graph.

Declaration

public IGraphLiteralNode CreateGraphLiteralNode(IGraph subgraph)

Parameters

Type	Name	Description
IGraph	subgraph	Subgraph.

Returns

Type	Description
IGraphLiteralNode

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CreateLiteralNode(string)

Creates a Literal Node with the given Value.

Declaration

public ILiteralNode CreateLiteralNode(string literal)

Parameters

Type	Name	Description
string	literal	Value of the Literal.

Returns

Type	Description
ILiteralNode

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CreateLiteralNode(string, string)

Creates a Literal Node with the given Value and Language.

Declaration

public ILiteralNode CreateLiteralNode(string literal, string langSpec)

Parameters

Type	Name	Description
string	literal	Value of the Literal.
string	langSpec	Language Specifier for the Literal.

Returns

Type	Description
ILiteralNode

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CreateLiteralNode(string, Uri)

Creates a Literal Node with the given Value and Data Type.

Declaration

public ILiteralNode CreateLiteralNode(string literal, Uri datatype)

Parameters

Type	Name	Description
string	literal	Value of the Literal.
Uri	datatype	Data Type URI of the Literal.

Returns

Type	Description
ILiteralNode

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CreateTripleNode(Triple)

Creates a node that quotes the given triple.

Declaration

public ITripleNode CreateTripleNode(Triple triple)

Parameters

Type	Name	Description
Triple	triple	The triple to be the quoted value of the created node.

Returns

Type	Description
ITripleNode

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CreateUriNode()

Creates a URI Node that corresponds to the current Base URI of the node factory.

Declaration

public IUriNode CreateUriNode()

Returns

Type	Description
IUriNode	A new URI Node.

Exceptions

Type	Condition
RdfException	Raised if BaseUri is currently null.

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CreateUriNode(string)

Creates a URI Node for the given QName using the Graphs NamespaceMap to resolve the QName.

Declaration

public IUriNode CreateUriNode(string qName)

Parameters

Type	Name	Description
string	qName	QName.

Returns

Type	Description
IUriNode	A new URI node.

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CreateUriNode(Uri)

Creates a URI Node for the given URI.

Declaration

public IUriNode CreateUriNode(Uri uri)

Parameters

Type	Name	Description
Uri	uri	URI.

Returns

Type	Description
IUriNode

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CreateVariableNode(string)

Creates a Variable Node for the given Variable Name.

Declaration

public IVariableNode CreateVariableNode(string varName)

Parameters

Type	Name	Description
string	varName

Returns

Type	Description
IVariableNode

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FlushBlankNodeAssignments()

Flush any manually assigned blank node ids to start a new context. This will force any future creation of a blank node with the same blank node id to map the id to a new auto-assigned id.

Declaration

public void FlushBlankNodeAssignments()

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GetNextBlankNodeID()

Creates a new unused Blank Node ID and returns it.

Declaration

public string GetNextBlankNodeID()

Returns

Type	Description
string

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ResolveQName(string)

Resolve a QName to a URI using this factory's NamespaceMap and BaseUri.

Declaration

public Uri ResolveQName(string qName)

Parameters

Type	Name	Description
string	qName

Returns

Type	Description
Uri

Implements

INodeFactory

Extension Methods

Extensions.ToSafeString(object)

Extensions.AsEnumerable<T>(T)