IFC 4.3.x development

8.16.3.5 IfcPropertyAbstraction

Change log

IFC4

added

8.16.3.5.1 Semantic definitions at the entity

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.

HISTORY  New entity in IFC4.

8.16.3.5.1 Attributes

# Attribute Type Description
IfcPropertyAbstraction
HasExternalReferencesSET [0:?] OF IfcExternalReferenceRelationship FOR RelatedResourceObjectsReference to an external reference, e.g. library, classification, or document information, that is associated to the property definition.

> IFC4 CHANGE New inverse attribute.

8.16.3.5.2 Entity inheritance

dot_inheritance IfcPropertyAbstraction_children 3 more... IfcPropertyAbstraction IfcPropertyAbstraction IfcPropertyAbstraction_children->IfcPropertyAbstraction

8.16.3.5.3 Formal representations

ENTITY IfcPropertyAbstraction
 ABSTRACT SUPERTYPE OF (ONEOF
	(IfcExtendedProperties
	,IfcPreDefinedProperties
	,IfcProperty
	,IfcPropertyEnumeration));
 INVERSE
	HasExternalReferences : SET [0:?] OF IfcExternalReferenceRelationship FOR RelatedResourceObjects;
END_ENTITY;