IfcPropertyTemplate

Item	SPF	XML	Change	Description
IFC2x3 to IFC4
IfcPropertyTemplate			ADDED

Semantic definitions at the entity

Entity 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.

NOTE Property templates can form part of a property library used and attached as part of a project library. In general the IfcPropertySetTemplate, containing the subtypes of IfcPropertyTemplate would be directly linked to the IfcProjectLibrary.

HISTORY New entity in IFC4.

Attribute definitions

#	Attribute	Type	Cardinality	Description	G
	PartOfComplexTemplate	IfcComplexPropertyTemplate @HasPropertyTemplates	S[0:?]	Reference to a complex property templates. It should only be provided, if the PropertyType of the referenced complex property template is set to COMPLEX.	X
	PartOfPsetTemplate	IfcPropertySetTemplate @HasPropertyTemplates	S[0:?]	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'.	X

Inherited definitions from supertypes

Entity inheritance

Attribute inheritance

#	Attribute	Type	Cardinality	Description	G
IfcRoot
1	GlobalId	IfcGloballyUniqueId		Assignment of a globally unique identifier within the entire software world.	X
2	OwnerHistory	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.	X
3	Name	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.	X
4	Description	IfcText	?	Optional description, provided for exchanging informative comments.	X
IfcPropertyDefinition
	HasContext	IfcRelDeclares @RelatedDefinitions	S[0:1]		X
	HasAssociations	IfcRelAssociates @RelatedObjects	S[0:?]	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.	X
IfcPropertyTemplateDefinition
IfcPropertyTemplate
	PartOfComplexTemplate	IfcComplexPropertyTemplate @HasPropertyTemplates	S[0:?]	Reference to a complex property templates. It should only be provided, if the PropertyType of the referenced complex property template is set to COMPLEX.	X
	PartOfPsetTemplate	IfcPropertySetTemplate @HasPropertyTemplates	S[0:?]	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'.	X

#	Concept	Template	Model View
IfcRoot
	Identity	Software Identity	General Usage
	Revision Control	Revision Control	General Usage

Formal representations

XML Specification

 <xs:element name="IfcPropertyTemplate" type="ifc:IfcPropertyTemplate" abstract="true" substitutionGroup="ifc:IfcPropertyTemplateDefinition" nillable="true"/>

 <xs:complexType name="IfcPropertyTemplate" abstract="true">

  <xs:complexContent>

   <xs:extension base="ifc:IfcPropertyTemplateDefinition"/>

  </xs:complexContent>

 </xs:complexType>

EXPRESS Specification


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;

 EXPRESS-G diagram

	Merkmal - Vorlage
	Property Template
	Modèle de propriété

IfcPropertyTemplate

Semantic definitions at the entity

Inherited definitions from supertypes

Definitions applying to General Usage

Formal representations