IfcProductRepresentation

Semantic definitions at the entity

Entity definition

The 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 STEP 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 IFC Release 2.0

IFC2x Edition 3 NOTE Users should not instantiate the entity IfcProductRepresentation from IFC2x Edition 3 onwards. It will be changed into an ABSTRACT supertype in future releases of IFC.

Attribute definitions

#	Attribute	Type	Cardinality	Description	A
1	Name	-		This attribute is out of scope for this model view definition and shall not be set.
2	Description	-		This attribute is out of scope for this model view definition and shall not be set.
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	A
IfcProductRepresentation
1	Name	-		This attribute is out of scope for this model view definition and shall not be set.
2	Description	-		This attribute is out of scope for this model view definition and shall not be set.
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" substitutionGroup="ifc:Entity" nillable="true"/>

 <xs:complexType name="IfcProductRepresentation">

  <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:extension>

  </xs:complexContent>

 </xs:complexType>

EXPRESS Specification


ENTITY IfcProductRepresentation

 SUPERTYPE OF(IfcProductDefinitionShape);

  Name : OPTIONAL IfcStrippedOptional;

  Description : OPTIONAL IfcStrippedOptional;

  Representations : LIST [1:?] OF IfcRepresentation;

END_ENTITY;

 EXPRESS-G diagram