5.1.3.18 IfcPropertyTemplateDefinition

Définition de modèle de propriété
Definition der Merkmal Vorlagen (allgemein)

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.

HISTORY  New entity in IFC4.

XSD Specification:

 <xs:element name="IfcPropertyTemplateDefinition" type="ifc:IfcPropertyTemplateDefinition" abstract="true" substitutionGroup="ifc:IfcPropertyDefinition" nillable="true"/>
 <xs:complexType name="IfcPropertyTemplateDefinition" abstract="true">
  <xs:complexContent>
   <xs:extension base="ifc:IfcPropertyDefinition"/>
  </xs:complexContent>
 </xs:complexType>

EXPRESS Specification:

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

Link to EXPRESS-G diagram EXPRESS-G diagram

Inheritance Graph:

ENTITY IfcPropertyTemplateDefinition
ENTITY IfcRoot
GlobalId : IfcGloballyUniqueId;
OwnerHistory : OPTIONAL IfcOwnerHistory;
Name : OPTIONAL IfcLabel;
Description : OPTIONAL IfcText;
ENTITY IfcPropertyDefinition
INVERSE
HasContext : SET [0:1] OF IfcRelDeclares FOR RelatedDefinitions;
HasAssociations : SET OF IfcRelAssociates FOR RelatedObjects;
ENTITY IfcPropertyTemplateDefinition
END_ENTITY;

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