8.16.3.5 IfcPropertyAbstraction
RV ⓘ
AbV ⓘ
ABSTRACT This definition may not be instantiated
8.16.3.5.1 Semantic definition
The IfcPropertyAbstraction is an abstract supertype of all property related entities defined as dependent resource entities within the specification. It may have an external reference to a dictionary or library that provides additional information about its definition. Instantiable subtypes have property name, value and other instance information.
New entity in IFC4.8.16.3.5.2 Entity inheritance
8.16.3.5.3 Attributes
| # | Attribute | Type | Description |
|---|---|---|---|
| IfcPropertyAbstraction (1) | |||
| HasExternalReferences | SET [0:?] OF IfcExternalReferenceRelationship FOR RelatedResourceObjects |
Reference to an external reference, e.g. library, classification, or document information, that is associated to the property definition. New inverse attribute. |
|
8.16.3.5.4 Formal representation
ENTITY IfcPropertyAbstraction
ABSTRACT SUPERTYPE OF (ONEOF
(IfcExtendedProperties
,IfcPreDefinedProperties
,IfcProperty
,IfcPropertyEnumeration));
INVERSE
HasExternalReferences : SET [0:?] OF IfcExternalReferenceRelationship FOR RelatedResourceObjects;
END_ENTITY;