IFC 4.3.x development

5.1.3.17 IfcPropertyTemplate

Change log

IFC4

added

5.1.3.17.1 Semantic definitions at the entity

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:

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.

5.1.3.17.1 Attributes

# Attribute Type Description
IfcRoot
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
HasContext SET [0:1] OF IfcRelDeclares FOR RelatedDefinitions
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.
IfcPropertyTemplateDefinition
IfcPropertyTemplate
PartOfComplexTemplateSET [0:?] OF IfcComplexPropertyTemplate FOR HasPropertyTemplatesReference 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'.

5.1.3.17.2 Entity inheritance

dot_inheritance IfcComplexPropertyTemplate IfcComplexPropertyTemplate IfcPropertyTemplate IfcPropertyTemplate IfcComplexPropertyTemplate->IfcPropertyTemplate IfcPropertyTemplateDefinition IfcPropertyTemplateDefinition IfcPropertyTemplate->IfcPropertyTemplateDefinition IfcSimplePropertyTemplate IfcSimplePropertyTemplate IfcSimplePropertyTemplate->IfcPropertyTemplate IfcPropertySetTemplate IfcPropertySetTemplate IfcPropertySetTemplate->IfcPropertyTemplateDefinition IfcPropertyDefinition IfcPropertyDefinition IfcPropertyTemplateDefinition->IfcPropertyDefinition IfcPropertySetDefinition IfcPropertySetDefinition IfcPropertySetDefinition->IfcPropertyDefinition IfcRoot IfcRoot IfcPropertyDefinition->IfcRoot IfcObjectDefinition IfcObjectDefinition IfcObjectDefinition->IfcRoot IfcRelationship IfcRelationship IfcRelationship->IfcRoot

5.1.3.17.3 Definitions applying to General Usage

5.1.3.17.3.1 Identity

IfcRoot assigns the globally unique ID. In addition it may provide for a name and a description about the concept.

5.1.3.17.3.2 Revision Control

Ownership, history, and merge state is captured using IfcOwnerHistory.

5.1.3.17.4 Formal representations

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;