IfcPreDefinedItem

Item	SPF	XML	Change	Description
IFC2x3 to IFC4
IfcPreDefinedItem			MOVED	Schema changed from IFCPRESENTATIONRESOURCE to IFCPRESENTATIONAPPEARANCERESOURCE.

Semantic definitions at the entity

Entity definition

A pre defined item is a qualified name given to a style or font which is determined within the data exchange specification by convention on using the Name attribute value (in contrary to externally defined items, which are agreed by an external source).

NOTE The convention on using the Name value is defined at the subtypes of IfcPreDefinedItem and is part of the specification.

NOTE Corresponding ISO 10303 name: pre_defined_item. Please refer to ISO/IS 10303-41:1994, page 137 for the final definition of the formal standard.

HISTORY New entity in IFC2x2.

Attribute definitions

#	Attribute	Type	Cardinality	Description	C
1	Name	IfcLabel	[1:1]	The string by which the pre defined item is identified. Allowable values for the string are declared at the level of subtypes.	X

Inherited definitions from supertypes

Entity inheritance

Attribute inheritance

#	Attribute	Type	Cardinality	Description	C
IfcPresentationItem
IfcPreDefinedItem
1	Name	IfcLabel	[1:1]	The string by which the pre defined item is identified. Allowable values for the string are declared at the level of subtypes.	X

Formal representations

XSD Specification

 <xs:element name="IfcPreDefinedItem" type="ifc:IfcPreDefinedItem" abstract="true" substitutionGroup="ifc:IfcPresentationItem" nillable="true"/>

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

  <xs:complexContent>

   <xs:extension base="ifc:IfcPresentationItem">

    <xs:attribute name="Name" type="ifc:IfcLabel" use="optional"/>

   </xs:extension>

  </xs:complexContent>

 </xs:complexType>

EXPRESS Specification


ENTITY IfcPreDefinedItem

 ABSTRACT SUPERTYPE OF(ONEOF(IfcPreDefinedColour, IfcPreDefinedCurveFont, IfcPreDefinedTextFont))

 SUBTYPE OF (IfcPresentationItem);

  Name : IfcLabel;

END_ENTITY;

 EXPRESS-G diagram

	Vordefiniertes Element
	Pre Defined Item
	Item pré-défini