IfcProductRepresentation

Item	SPF	XML	Change	Description
IFC2x3 to IFC4
IfcProductRepresentation			MODIFIED	Instantiation changed to ABSTRACT.

Semantic definitions at the entity

Entity definition

IfcProductRepresentation defines a representation of a product, including its (geometric or topological) representation. A product can have zero, one or many geometric representations, and a single geometric representation can be shared among various products using mapped representations.

NOTE The definition of this entity relates to the ISO 10303 entity property_definition. The use of the term ‘property’ was avoided since it conflicts with the property, property type, and property set definitions elsewhere in the IFC model.

HISTORY New entity in IFC2.0

IFC2x3 NOTE Users should not instantiate the entity from IFC2x3 onwards.

IFC4 CHANGE Entity made abstract.

Attribute definitions

#	Attribute	Type	Cardinality	Description	C
1	Name	IfcLabel	[0:1]	The word or group of words by which the product representation is known.	X
2	Description	IfcText	[0:1]	The word or group of words that characterize the product representation. It can be used to add additional meaning to the name of the product representation.	X
3	Representations	IfcRepresentation	L[1:?]	Contained list of representations (including shape representations). Each member defines a valid representation of a particular type within a particular representation context.	X

Inherited definitions from supertypes

Entity inheritance

Attribute inheritance

#	Attribute	Type	Cardinality	Description	C
IfcProductRepresentation
1	Name	IfcLabel	[0:1]	The word or group of words by which the product representation is known.	X
2	Description	IfcText	[0:1]	The word or group of words that characterize the product representation. It can be used to add additional meaning to the name of the product representation.	X
3	Representations	IfcRepresentation	L[1:?]	Contained list of representations (including shape representations). Each member defines a valid representation of a particular type within a particular representation context.	X

Formal representations

XSD Specification

 <xs:element name="IfcProductRepresentation" type="ifc:IfcProductRepresentation" abstract="true" substitutionGroup="ifc:Entity" nillable="true"/>

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

  <xs:complexContent>

   <xs:extension base="ifc:Entity">

    <xs:sequence>

     <xs:element name="Representations">

      <xs:complexType>

       <xs:sequence>

        <xs:element ref="ifc:IfcRepresentation" maxOccurs="unbounded"/>

       </xs:sequence>

       <xs:attribute ref="ifc:itemType" fixed="ifc:IfcRepresentation"/>

       <xs:attribute ref="ifc:cType" fixed="list"/>

       <xs:attribute ref="ifc:arraySize" use="optional"/>

      </xs:complexType>

     </xs:element>

    </xs:sequence>

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

    <xs:attribute name="Description" type="ifc:IfcText" use="optional"/>

   </xs:extension>

  </xs:complexContent>

 </xs:complexType>

EXPRESS Specification


ENTITY IfcProductRepresentation

 ABSTRACT SUPERTYPE OF(ONEOF(IfcMaterialDefinitionRepresentation, IfcProductDefinitionShape));

  Name : OPTIONAL IfcLabel;

  Description : OPTIONAL IfcText;

  Representations : LIST [1:?] OF IfcRepresentation;

END_ENTITY;

 EXPRESS-G diagram

	Produkt - Repräsentation
	Product Representation
	Représentation du produit