IfcPropertySetDefinition

Natural language names
deDefinition der Merkmalliste (allgemein)
enProperty Set Definition
frDéfinition d'ensemble de propriété
Semantic definitions at the entity
Entity definition

IfcPropertySetDefinition is a generalization of all individual property sets that can be assigned to an object or type object. The property set definition can be either:

Property set definitions define information that is shared among multiple instances of objects, either object occurrences or object types. IfcPropertySetDefinition's (by their instantiable subtypes) can participate within the following relationships:

NOTE  Properties assigned to object occurrences may override properties assigned to the object type. See IfcRelDefinesByType for further information.
HISTORY  New entity in IFC2x
IFC4 CHANGE  The subtype IfcPreDefinedPropertySet has been added.
Attribute definitions
#AttributeTypeCardinalityDescription C
DefinesTypeIfcTypeObject
@HasPropertySets
S[0:?]The type object to which the property set is assigned. The property set acts as a shared property set to all occurrences of the type object.
NOTE  The relationship between the IfcPropertySetDefinition and the IfcTypeObject is a direct relationship, not utilizing IfcRelDefinesByProperties, for maintaining compatibility with earlier releases of this standard.
X
IsDefinedByIfcRelDefinesByTemplate
@RelatedPropertySets
S[0:?]Relation to the property set template, via the objectified relationship IfcRelDefinesByTemplate, that, if given, provides the definition template for the property set or quantity set and its properties. X
DefinesOccurrenceIfcRelDefinesByProperties
@RelatingPropertyDefinition
S[0:?]Reference to the relation to one or many object occurrences that are characterized by the property set definition. A single property set can be assigned to multiple object occurrences using the objectified relationship IfcRefDefinesByProperties. X
Inherited definitions from supertypes
Entity inheritance IfcPreDefinedPropertySet IfcPropertySet IfcQuantitySet IfcPropertyDefinition IfcRoot
Attribute inheritance
#AttributeTypeCardinalityDescriptionC
IfcRoot
1GlobalIdIfcGloballyUniqueId[1:1] Assignment of a globally unique identifier within the entire software world. X
2OwnerHistoryIfcOwnerHistory[0:1] 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.
X
3NameIfcLabel[0:1] 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
4DescriptionIfcText[0:1] Optional description, provided for exchanging informative comments.X
IfcPropertyDefinition
HasContextIfcRelDeclares
@RelatedDefinitions
S[0:1]X
HasAssociationsIfcRelAssociates
@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
IfcPropertySetDefinition
DefinesTypeIfcTypeObject
@HasPropertySets
S[0:?]The type object to which the property set is assigned. The property set acts as a shared property set to all occurrences of the type object.
NOTE  The relationship between the IfcPropertySetDefinition and the IfcTypeObject is a direct relationship, not utilizing IfcRelDefinesByProperties, for maintaining compatibility with earlier releases of this standard.
X
IsDefinedByIfcRelDefinesByTemplate
@RelatedPropertySets
S[0:?]Relation to the property set template, via the objectified relationship IfcRelDefinesByTemplate, that, if given, provides the definition template for the property set or quantity set and its properties. X
DefinesOccurrenceIfcRelDefinesByProperties
@RelatingPropertyDefinition
S[0:?]Reference to the relation to one or many object occurrences that are characterized by the property set definition. A single property set can be assigned to multiple object occurrences using the objectified relationship IfcRefDefinesByProperties. X
Definitions applying to Common Use Definitions

Concept inheritance

#ConceptModel View
IfcRoot
Software IdentityCommon Use Definitions
Revision ControlCommon Use Definitions
Formal representations
XSD Specification
 <xs:element name="IfcPropertySetDefinition" type="ifc:IfcPropertySetDefinition" abstract="true" substitutionGroup="ifc:IfcPropertyDefinition" nillable="true"/>
 <xs:complexType name="IfcPropertySetDefinition" abstract="true">
  <xs:complexContent>
   <xs:extension base="ifc:IfcPropertyDefinition"/>
  </xs:complexContent>
 </xs:complexType>
EXPRESS Specification
ENTITY IfcPropertySetDefinition
 ABSTRACT SUPERTYPE OF(ONEOF(IfcPreDefinedPropertySet, IfcPropertySet, IfcQuantitySet))
 SUBTYPE OF (IfcPropertyDefinition);
 INVERSE
  DefinesType : SET OF IfcTypeObject FOR HasPropertySets;
  IsDefinedBy : SET OF IfcRelDefinesByTemplate FOR RelatedPropertySets;
  DefinesOccurrence : SET [0:?] OF IfcRelDefinesByProperties FOR RelatingPropertyDefinition;
END_ENTITY;

Link to EXPRESS-G diagram EXPRESS-G diagram

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