trustgraph/specs/api/components/schemas/common/RdfValue.yaml

type: object
description: |
  RDF Term - typed representation of a value in the knowledge graph.

  Term types (discriminated by `t` field):
  - `i`: IRI (URI reference)
  - `l`: Literal (string value, optionally with datatype or language tag)
  - `r`: Quoted triple (RDF-star reification)
  - `b`: Blank node
properties:
  t:
    type: string
    description: Term type discriminator
    enum: [i, l, r, b]
    example: i
  i:
    type: string
    description: IRI value (when t=i)
    example: http://example.com/Person1
  v:
    type: string
    description: Literal value (when t=l)
    example: John Doe
  d:
    type: string
    description: Datatype IRI for literal (when t=l, optional)
    example: http://www.w3.org/2001/XMLSchema#integer
  l:
    type: string
    description: Language tag for literal (when t=l, optional)
    example: en
  r:
    type: object
    description: Quoted triple (when t=r) - contains s, p, o as nested Term objects with the same structure
    properties:
      s:
        type: object
        description: Subject term
      p:
        type: object
        description: Predicate term
      o:
        type: object
        description: Object term
required:
  - t
examples:
  - description: IRI term
    value:
      t: i
      i: http://schema.org/name
  - description: Literal term
    value:
      t: l
      v: John Doe
  - description: Literal with language tag
    value:
      t: l
      v: Bonjour
      l: fr