5.1.3.17 IfcPropertyTemplate

ABSTRACT This definition may not be instantiated

5.1.3.17.1 Semantic definition

The IfcPropertyTemplate is an abstract supertype comprising the templates for all dynamically extensible properties, either as an IfcComplexPropertyTemplate, or an IfcSimplePropertyTemplate. These templates determine the structure of:

in case of IfcComplexPropertyTemplate
- an IfcComplexProperty
- an IfcPhysicalComplexQuantity
in case of IfcSimplePropertyTemplate
- a subtype of IfcSimpleProperty
- a subtype of IfcPhysicalSimpleQuantity

The individual property templates are interpreted according to their Name attribute and may have a predefined property type, property unit, and property data type. A template however shall not have measure values, or quantity values assigned.

5.1.3.17.2 Entity inheritance

5.1.3.17.3 Attributes

#	Attribute	Type	Description
IfcRoot (4)
1	GlobalId	IfcGloballyUniqueId	Assignment of a globally unique identifier within the entire software world.
2	OwnerHistory	OPTIONAL IfcOwnerHistory	Assignment of the information about the current ownership of that object, including owning actor, application, local identification and information captured about the recent changes of the object, NOTE only the last modification in stored - either as addition, deletion or modification. IFC4-CHANGE The attribute has been changed to be OPTIONAL.
3	Name	OPTIONAL IfcLabel	Optional name for use by the participating software systems or users. For some subtypes of IfcRoot the insertion of the Name attribute may be required. This would be enforced by a where rule.
4	Description	OPTIONAL IfcText	Optional description, provided for exchanging informative comments.
IfcPropertyDefinition (2)
	HasContext	SET [0:1] OF IfcRelDeclares FOR RelatedDefinitions	No description available.
	HasAssociations	SET [0:?] OF IfcRelAssociates FOR RelatedObjects	Reference to the relationship IfcRelAssociates and thus to those externally defined concepts, like classifications, documents, or library information, which are associated to the property definition.
Click to show 6 hidden inherited attributes Click to hide 6 inherited attributes
IfcPropertyTemplate (2)
	PartOfComplexTemplate	SET [0:?] OF IfcComplexPropertyTemplate FOR HasPropertyTemplates	Reference to a complex property templates. It should only be provided, if the PropertyType of the referenced complex property template is set to COMPLEX.
	PartOfPsetTemplate	SET [0:?] OF IfcPropertySetTemplate FOR HasPropertyTemplates	Reference to the IfcPropertySetTemplate that defines the scope for the IfcPropertyTemplate. A single IfcPropertyTemplate can be defined within the scope of zero, one or many IfcPropertySetTemplate'.

Table 5.1.3.17.A

5.1.3.17.4 Concept usage

Concept	Usage	Description
IfcRoot (2)
Revision Control	General	Ownership, history, and merge state is captured using IfcOwnerHistory.
Software Identity	General	IfcRoot assigns the globally unique ID. In addition it may provide for a name and a description about the concept.
Click to show 2 hidden inherited concepts Click to hide 2 inherited concepts

Table 5.1.3.17.B

5.1.3.17.5 Formal representation

ENTITY IfcPropertyTemplate
 ABSTRACT SUPERTYPE OF (ONEOF
	(IfcComplexPropertyTemplate
	,IfcSimplePropertyTemplate))
 SUBTYPE OF (IfcPropertyTemplateDefinition);
 INVERSE
	PartOfComplexTemplate : SET [0:?] OF IfcComplexPropertyTemplate FOR HasPropertyTemplates;
	PartOfPsetTemplate : SET [0:?] OF IfcPropertySetTemplate FOR HasPropertyTemplates;
END_ENTITY;