Class BlankNode

An RDF blank node is a Node without a URI

Link

https://rdf.js.org/data-model-spec/#blanknode-interface

Hierarchy (view full)

Node
- BlankNode

Implements

BlankNode

Index

Constructors

constructor

Properties

classOrder isBlank isVar termType value NTAnonymousNodePrefix fromValue nextId toJS

Accessors

Methods

compareTerm copy equals hashString sameTerm substitute toCanonical toNQ toNT toString

Constructors

constructor

new BlankNode(id?): BlankNode
Initializes this node
Parameters
- Optional id: unknown
  The identifier for the blank node
Returns BlankNode
Overrides Node.constructor
- Defined in src/blank-node.ts:51

Properties

classOrder

classOrder: number = ClassOrder.BlankNode

The class order for this node

isBlank

isBlank: number = 1

Whether this is a blank node

isVar

isVar: number = 1

This type of node is a variable.

Note that the existence of this property already indicates that it is a variable.

termType

termType: "BlankNode" = BlankNodeTermType

The type of node

value

value: string

The node's value

`Static` NTAnonymousNodePrefix

NTAnonymousNodePrefix: "_:" = '_:'

`Static` fromValue

fromValue: (<T>(value) => T)

Type declaration

- <T>(value): T
- Type Parameters
  - T extends FromValueReturns
  Parameters
  - value: ValueType
  Returns T

`Static` nextId

nextId: number = 0

The next unique identifier for blank nodes

`Static` toJS

Type declaration

- (term): string | boolean | object | Number | Date | (string | boolean | object | Number | Date)[]
- Parameters
  - term: any
  Returns string | boolean | object | Number | Date | (string | boolean | object | Number | Date)[]

Accessors

id

get id(): string
The identifier for the blank node

Returns string
- Defined in src/blank-node.ts:58
set id(value): void
Parameters
- value: string
Returns void
- Defined in src/blank-node.ts:62

Methods

compareTerm

compareTerm(other): number
Compares this node with another
Parameters
- other: BlankNode
  The other node
Returns number
See
to check if two nodes are equal
Overrides Node.compareTerm
- Defined in src/blank-node.ts:66

copy

copy(formula): BlankNode
Gets a copy of this blank node in the specified formula
Parameters
- formula: Store
  The formula
Returns BlankNode
- Defined in src/blank-node.ts:86

equals

equals(other): boolean
Compares whether the two nodes are equal
Parameters
- other: Term
  The other node
Returns boolean
Implementation of TFBlankNode.equals
Inherited from Node.equals
- Defined in src/node-internal.ts:64

hashString

hashString(): string
Creates a hash for this node

Returns string
Deprecated
use {rdfFactory.id} instead if possible
Inherited from Node.hashString
- Defined in src/node-internal.ts:76

sameTerm

sameTerm(other): boolean
Compares whether this node is the same as the other one
Parameters
- other: Node
  Another node
Returns boolean
Inherited from Node.sameTerm
- Defined in src/node-internal.ts:84

substitute

substitute<T>(bindings): T
Creates the substituted node for this one, according to the specified bindings
Type Parameters
- T extends Node<T> = Node
Parameters
- bindings: Bindings
  Bindings of identifiers to nodes
Returns T
Inherited from Node.substitute
- Defined in src/node-internal.ts:35

toCanonical

toCanonical(): string
Creates a canonical string representation of this node

Returns string
Overrides Node.toCanonical
- Defined in src/blank-node.ts:92

toNQ

toNQ(): string
Creates a n-quads string representation of this node

Returns string
Inherited from Node.toNQ
- Defined in src/node-internal.ts:106

toNT

toNT(): string
Creates a n-triples string representation of this node

Returns string
Inherited from Node.toNT
- Defined in src/node-internal.ts:99

toString

toString(): string
Creates a string representation of this node

Returns string
Overrides Node.toString
- Defined in src/blank-node.ts:96

Class BlankNode

Link

Hierarchy (view full)

Implements

Index

Constructors

Properties

Accessors

Methods

Constructors

constructor

Parameters

Returns BlankNode

Properties

classOrder

isBlank

isVar

termType

value

Static NTAnonymousNodePrefix

Static fromValue

Type declaration

Type Parameters

Parameters

Returns T

Static nextId

Static toJS

Type declaration

Parameters

Returns string | boolean | object | Number | Date | (string | boolean | object | Number | Date)[]

Accessors

id

Returns string

Parameters

Returns void

Methods

compareTerm

Parameters

Returns number

See

copy

Parameters

Returns BlankNode

equals

Parameters

Returns boolean

hashString

Returns string

Deprecated

sameTerm

Parameters

Returns boolean

substitute

Type Parameters

Parameters

Returns T

toCanonical

Returns string

toNQ

Returns string

toNT

Returns string

toString

Returns string

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`Static` NTAnonymousNodePrefix

`Static` fromValue

`Static` nextId

`Static` toJS