Class DataFactory

constructor

• new DataFactory(): DataFactory

  Returns DataFactory

blankNodeCounter

blankNode

• blankNode(value?: string): BlankNode

  Creates a new blank node with the given identifier. If no identifier is provided, a unique one will be generated.

  Parameters

  • Optionalvalue: string

    Optional blank node identifier.

  Returns BlankNode

  A new BlankNode instance.

defaultGraph

• defaultGraph(): DefaultGraph

  Returns the singleton default graph instance.

  Returns DefaultGraph

  The default graph instance.

fromQuad

• fromQuad(original: Quad): Quad

  Creates a copy of an existing quad.

  Parameters

  • original: Quad

    The quad to copy.

  Returns Quad

  A new quad instance with the same values.

fromTerm

• fromTerm<T extends Term>(original: T): T

  Creates a copy of an existing term.

  Type Parameters

  • T extends Term

  Parameters

  • original: T

    The term to copy.

  Returns T

  A new term instance with the same value.

literal

• literal(value: string, languageOrDatatype?: string | NamedNode<string>): Literal

  Creates a new literal with the given value and optional language tag or datatype.

  Parameters

  • value: string

    The lexical value of the literal.

  • OptionallanguageOrDatatype: string | NamedNode<string>

    Either a language tag (string) or a datatype (NamedNode).

  Returns Literal

  A new Literal instance.

namedNode

• namedNode<Iri extends string = string>(value: Iri): NamedNode<Iri>

  Creates a new named node with the given IRI.

  Type Parameters

  • Iri extends string = string

  Parameters

  • value: Iri

    The IRI of the named node.

  Returns NamedNode<Iri>

  A new NamedNode instance.

quad

• quad(
      subject: Quad_Subject,
      predicate: Quad_Predicate,
      object: Quad_Object,
      graph?: Quad_Graph,
  ): Quad

  Creates a new quad with the given subject, predicate, object, and optional graph.

  Parameters

  • subject: Quad_Subject

    The subject of the quad.

  • predicate: Quad_Predicate

    The predicate of the quad.

  • object: Quad_Object

    The object of the quad.

  • Optionalgraph: Quad_Graph

    The graph of the quad (defaults to the default graph).

  Returns Quad

  A new Quad instance.

resetBlankNodeCounter

• resetBlankNodeCounter(): void

  Resets the blank node counter. Useful for testing.

  Returns void

variable

• variable(value: string): Variable

  Creates a new variable with the given name.

  Parameters

  • value: string

    The name of the variable (without the leading '?').

  Returns Variable

  A new Variable instance.