IFC 4.3.0.1 (IFC4X3) development

8.16.3.4 IfcProperty

ABSTRACT This definition may not be instantiated

8.16.3.4.1 Semantic definition

IfcProperty is an abstract generalization for all types of properties that can be associated with IFC objects through the property set mechanism.

8.16.3.4.2 Entity inheritance

8.16.3.4.3 Attributes

# Attribute Type Description
IfcPropertyAbstraction (1)
HasExternalReferences SET [0:?] OF IfcExternalReferenceRelationship FOR RelatedResourceObjects

Reference to an external reference, e.g. library, classification, or document information, that is associated to the property definition.

Click to show 1 hidden inherited attributes Click to hide 1 inherited attributes
IfcProperty (8)
1 Name IfcIdentifier

Name for this property. This label is the significant name string that defines the semantic meaning for the property.

2 Specification OPTIONAL IfcText

URI reference to a location with semantic definition or informative text to explain the property.

PartOfPset SET [0:?] OF IfcPropertySet FOR HasProperties

Reference to the IfcPropertySet by which the IfcProperty is referenced.

PropertyForDependance SET [0:?] OF IfcPropertyDependencyRelationship FOR DependingProperty

The property on whose value that of another property depends.

PropertyDependsOn SET [0:?] OF IfcPropertyDependencyRelationship FOR DependantProperty

The relating property on which the value of the property depends.

PartOfComplex SET [0:?] OF IfcComplexProperty FOR HasProperties

Reference to the IfcComplexProperty in which the IfcProperty is contained.

HasConstraints SET [0:?] OF IfcResourceConstraintRelationship FOR RelatedResourceObjects

User-defined constraints for the property.

HasApprovals SET [0:?] OF IfcResourceApprovalRelationship FOR RelatedResourceObjects

User-defined approvals for the property.

Table 8.16.3.4.A

8.16.3.4.4 Formal representation

ENTITY IfcProperty
 ABSTRACT SUPERTYPE OF (ONEOF
	(IfcComplexProperty
	,IfcSimpleProperty))
 SUBTYPE OF (IfcPropertyAbstraction);
	Name : IfcIdentifier;
	Specification : OPTIONAL IfcText;
 INVERSE
	PartOfPset : SET [0:?] OF IfcPropertySet FOR HasProperties;
	PropertyForDependance : SET [0:?] OF IfcPropertyDependencyRelationship FOR DependingProperty;
	PropertyDependsOn : SET [0:?] OF IfcPropertyDependencyRelationship FOR DependantProperty;
	PartOfComplex : SET [0:?] OF IfcComplexProperty FOR HasProperties;
	HasConstraints : SET [0:?] OF IfcResourceConstraintRelationship FOR RelatedResourceObjects;
	HasApprovals : SET [0:?] OF IfcResourceApprovalRelationship FOR RelatedResourceObjects;
END_ENTITY;

8.16.3.4.5 References

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8.16.3.4.6 Changelog

  • inverse attribute, HasApprovals
  • inverse attribute, HasConstraints
  • inverse attribute, PartOfPset
  • inverse attribute PartOfComplex type, Changed from "SET OF [0:1] IfcComplexProperty FOR HasProperties" to "SET OF [0:?] IfcComplexProperty FOR HasProperties"
  • attribute Description name, Changed from "Description" to "Specification"