IFC 4.3.0.1 (IFC4X3) development

5.1.3.39 IfcRelDefinesByTemplate

5.1.3.39.1 Semantic definition

The objectified relationship IfcRelDefinesByTemplate defines the relationships between property set template and property sets. Common information about property sets, e.g. the applicable name, description, contained properties, is defined by the property set template and assigned to all property sets.

The IfcRelDefinesByTemplate is a 1-to-N relationship, as it allows for the assignment of one property set template to a single or to many property sets or quantity sets. Those property sets then share the same property set template definition.

5.1.3.39.2 Entity inheritance

5.1.3.39.3 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,

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.

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IfcRelDefinesByTemplate (2)
5 RelatedPropertySets SET [1:?] OF IfcPropertySetDefinition

One or many property sets or quantity sets that obtain their definitions from the single property set template.

6 RelatingTemplate IfcPropertySetTemplate

Property set template that provides the common definition of related property sets.

Table 5.1.3.39.A

5.1.3.39.4 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.

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Table 5.1.3.39.B

5.1.3.39.5 Formal representation

ENTITY IfcRelDefinesByTemplate
 SUBTYPE OF (IfcRelDefines);
	RelatedPropertySets : SET [1:?] OF IfcPropertySetDefinition;
	RelatingTemplate : IfcPropertySetTemplate;
END_ENTITY;

5.1.3.39.6 References

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5.1.3.39.7 Changelog

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