Individual placeholder standing in for one property value within a resource retrieval description:
Literal — primitive data (boolean, number, string)
Reference — reference to a linked resource, identified by its IRI
Template — linked resource expanded as a nested retrieval template
A reference placeholder carries no data: validation checks only its reference kind (any well-formed IRI reference,
relative forms and the inert "" canonical slot included), not the value-domain constraints a Reference
value satisfies. Codecs resolve reference values proper to an absolute Reference on decoding; those appear
as Option operands of a Selection.
See
Model for the single-value umbrella admitting this and the other non-collection forms
Property value template.
Individual placeholder standing in for one property value within a resource retrieval description:
boolean,number,string)A reference placeholder carries no data: validation checks only its reference kind (any well-formed IRI reference, relative forms and the inert
""canonical slot included), not the value-domain constraints a Reference value satisfies. Codecs resolve reference values proper to an absolute Reference on decoding; those appear as Option operands of a Selection.