Entities and primitives
Entities represent the named terms of OWL ontologies, such as classes, datatypes, and properties,
and are modeled by CowlEntity. The term primitive has no correspondence in the
OWL 2 specification. It is used as a collective term for entities, anonymous individuals,
and IRIs, which are modeled by CowlPrimitive. You can always safely cast
CowlEntity to CowlPrimitive, while the opposite can only be done
after checking that the primitive is an OWL entity (see cowl_is_entity()).
-
struct CowlEntity
Represents an Entity in the OWL 2 specification.
Pseudo-extends:
CowlPrimitive
-
enum CowlEntityType
Represents the type of
CowlEntity.Values:
-
enumerator COWL_ET_DATATYPE
CowlDatatype- datatype.
-
enumerator COWL_ET_OBJ_PROP
CowlObjProp- object property.
-
enumerator COWL_ET_DATA_PROP
CowlDataProp- data property.
-
enumerator COWL_ET_ANNOT_PROP
CowlAnnotProp- annotation property.
-
enumerator COWL_ET_NAMED_IND
CowlNamedInd- named individual.
-
enumerator COWL_ET_COUNT
Number of enum values.
-
enumerator COWL_ET_FIRST
First enum value.
-
enumerator COWL_ET_DATATYPE
-
CowlEntityType cowl_entity_get_type(CowlAnyEntity *entity)
Gets the type of the entity.
- Parameters:
entity – The entity.
- Returns:
The type.
-
CowlIRI *cowl_entity_get_iri(CowlAnyEntity *entity)
Gets the IRI of the entity.
- Parameters:
entity – The entity.
- Returns:
The IRI.
-
bool cowl_entity_is_reserved(CowlAnyEntity *entity)
Checks whether the entity is reserved, i.e.
if its IRI is in the reserved vocabulary.
- Parameters:
entity – The entity.
- Returns:
True if the entity is reserved, false otherwise.
-
struct CowlPrimitive
Represents a primitive, a collective term for entities, anonymous individuals, and IRIs.
Pseudo-extends:
CowlObject
-
enum CowlPrimitiveType
Represents the type of
CowlPrimitive.Values:
-
enumerator COWL_PT_DATATYPE
CowlDatatype- datatype.
-
enumerator COWL_PT_OBJ_PROP
CowlObjProp- object property.
-
enumerator COWL_PT_DATA_PROP
CowlDataProp- data property.
-
enumerator COWL_PT_ANNOT_PROP
CowlAnnotProp- annotation property.
-
enumerator COWL_PT_NAMED_IND
CowlNamedInd- named individual.
-
enumerator COWL_PT_ANON_IND
CowlAnonInd- anonymous individual.
-
enumerator COWL_PT_COUNT
Number of enum values.
-
enumerator COWL_PT_FIRST
First enum value.
-
enumerator COWL_PT_DATATYPE
-
CowlPrimitiveType cowl_primitive_get_type(CowlAnyPrimitive *primitive)
Gets the type of the primitive.
- Parameters:
primitive – The primitive.
- Returns:
The type.
-
bool cowl_primitive_is_entity(CowlAnyPrimitive *primitive)
Checks whether the primitive is an entity.
- Parameters:
primitive – The primitive.
- Returns:
True if the primitive is an entity,