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5.1.3.18 IfcPropertyTemplateDefinition

RV ⓘ
AbV ⓘ

ABSTRACT This definition may not be instantiated

5.1.3.18.1 Semantic definition

IfcPropertyTemplateDefinition is a generalization of all property and property set templates. Templates define the collection, types, names, applicable measure types and units of individual properties used in a project. The property template definition can be either:

  • Property set template - IfcPropertySetTemplate, a collection of property templates that determine the definition of properties used within a project context.
  • Property template - IfcPropertyTemplate, a single template that determines the definition of a particular property used in the same project context. The template may determine the name, description, data type, the unit, or a standard expression for each property that is based on that template.

The subtypes of IfcPropertyTemplateDefinition are declared within a project context. The uppermost template definition (e.g. the IfcPropertySetTemplate including several IfcPropertyTemplate's) should be related to the context, either IfcProject, or IfcProjectLibrary, using the inherited HasContext inverse attribute.

5.1.3.18.2 Entity inheritance

5.1.3.18.3 Attributes

# Attribute Type Description
IfcRoot (4)
Click to show 4 hidden inherited attributes
IfcPropertyDefinition (2)
HasContext SET [0:1] OF IfcRelDeclares FOR RelatedDefinitions

Reference to the relationship IfcRelDeclares and thus to the IfcProject or IfcProjectLibrary.

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.

Table 5.1.3.18.A

5.1.3.18.4 Concept usage

Concept Usage Description
IfcRoot (2)
Click to show 2 hidden inherited concepts
Table 5.1.3.18.B

5.1.3.18.5 Formal representation

ENTITY IfcPropertyTemplateDefinition
ABSTRACT SUPERTYPE OF (ONEOF
(IfcPropertySetTemplate
,IfcPropertyTemplate))
SUBTYPE OF (IfcPropertyDefinition);
END_ENTITY;

5.1.3.18.6 References

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5.1.3.18.7 Changelog

5.1.3.18.7.1 IFC4

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