IfcProperty

Natural language names
Merkmal
Property
Propriété
Semantic definitions at the entity
Entity definition

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

HISTORY  New entity in IFC1.0.
Attribute definitions
#AttributeTypeCardinalityDescription R
1NameIfcIdentifier Name for this property. This label is the significant name string that defines the semantic meaning for the property.X
2DescriptionIfcText? Informative text to explain the property.X
PartOfPsetIfcPropertySet
@HasProperties
S[0:?]Reference to the IfcPropertySet by which the IfcProperty is referenced.
IFC4 CHANGE  New inverse attribute to navigate from IfcProperty to IfcPropertySet with upward compatibility for file based exchange.
PartOfComplexIfcComplexProperty
@HasProperties
S[0:?]Reference to the IfcComplexProperty in which the IfcProperty is contained.
IFC4 CHANGE  The cardinality has changed to 0..n to allow reuse of instances of IfcProperty in several IfcComplexProperty with upward compatibility for file based exchange.
Inherited definitions from supertypes
Entity inheritance IfcComplexProperty IfcSimpleProperty IfcPropertyAbstraction
Attribute inheritance
#AttributeTypeCardinalityDescriptionR
IfcPropertyAbstraction
IfcProperty
1NameIfcIdentifier Name for this property. This label is the significant name string that defines the semantic meaning for the property.X
2DescriptionIfcText? Informative text to explain the property.X
PartOfPsetIfcPropertySet
@HasProperties
S[0:?]Reference to the IfcPropertySet by which the IfcProperty is referenced.
IFC4 CHANGE  New inverse attribute to navigate from IfcProperty to IfcPropertySet with upward compatibility for file based exchange.
PartOfComplexIfcComplexProperty
@HasProperties
S[0:?]Reference to the IfcComplexProperty in which the IfcProperty is contained.
IFC4 CHANGE  The cardinality has changed to 0..n to allow reuse of instances of IfcProperty in several IfcComplexProperty with upward compatibility for file based exchange.
Formal representations
XML Specification
 <xs:element name="IfcProperty" type="ifc:IfcProperty" abstract="true" substitutionGroup="ifc:IfcPropertyAbstraction" nillable="true"/>
 <xs:complexType name="IfcProperty" abstract="true">
  <xs:complexContent>
   <xs:extension base="ifc:IfcPropertyAbstraction">
    <xs:attribute name="Name" type="ifc:IfcIdentifier" use="optional"/>
    <xs:attribute name="Description" type="ifc:IfcText" use="optional"/>
   </xs:extension>
  </xs:complexContent>
 </xs:complexType>
EXPRESS Specification
ENTITY IfcProperty
 ABSTRACT SUPERTYPE OF(ONEOF(IfcComplexProperty, IfcSimpleProperty))
 SUBTYPE OF (IfcPropertyAbstraction);
  Name : IfcIdentifier;
  Description : OPTIONAL IfcText;
 INVERSE
  PartOfPset : SET [0:?] OF IfcPropertySet FOR HasProperties;
  PartOfComplex : SET [0:?] OF IfcComplexProperty FOR HasProperties;
END_ENTITY;

Link to EXPRESS-G diagram EXPRESS-G diagram

References  References: IfcPropertySet IfcComplexProperty IfcExtendedProperties

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