IfcRelDefinesByTemplate

Item	SPF	XML	Change	Description
IFC2x3 to IFC4
IfcRelDefinesByTemplate			ADDED

Semantic definitions at the entity

Entity definition

The objectified relationship IfcRelDefinesByTemplate defines the relationships between property set template and property sets. Common information about property sets, e.g. the applicable name, description, contained properties, is defined by the property set template and assigned to all property sets.

NOTE The assignment of an IfcPropertySetTemplate is supported for IfcPropertySet and IfcQuantitySet.

The IfcRelDefinesByTemplate is a 1-to-N relationship, as it allows for the assignment of one property set template to a single or to many property sets or quantity sets. Those property sets then share the same property set template definition.

HISTORY New entity in IFC4.

Attribute definitions

#	Attribute	Type	Cardinality	Description	C
5	RelatedPropertySets	IfcPropertySetDefinition	S[1:?]	One or many property sets or quantity sets that obtain their definitions from the single property set template.	X
6	RelatingTemplate	IfcPropertySetTemplate	[1:1]	Property set template that provides the common definition of related property sets.	X

Inherited definitions from supertypes

Entity inheritance

Attribute inheritance

#	Attribute	Type	Cardinality	Description	C
IfcRoot
1	GlobalId	IfcGloballyUniqueId	[1:1]	Assignment of a globally unique identifier within the entire software world.	X
2	OwnerHistory	IfcOwnerHistory	[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
3	Name	IfcLabel	[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
4	Description	IfcText	[0:1]	Optional description, provided for exchanging informative comments.	X
IfcRelationship
IfcRelDefines
IfcRelDefinesByTemplate
5	RelatedPropertySets	IfcPropertySetDefinition	S[1:?]	One or many property sets or quantity sets that obtain their definitions from the single property set template.	X
6	RelatingTemplate	IfcPropertySetTemplate	[1:1]	Property set template that provides the common definition of related property sets.	X

Definitions applying to Common Use Definitions

Concept inheritance

#	Concept	Model View
IfcRoot
	Software Identity	Common Use Definitions
	Revision Control	Common Use Definitions

Examples

Air terminal library object

Formal representations

XSD Specification

 <xs:element name="IfcRelDefinesByTemplate" type="ifc:IfcRelDefinesByTemplate" substitutionGroup="ifc:IfcRelDefines" nillable="true"/>

 <xs:complexType name="IfcRelDefinesByTemplate">

  <xs:complexContent>

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

    <xs:sequence>

     <xs:element name="RelatedPropertySets">

      <xs:complexType>

       <xs:sequence>

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

       </xs:sequence>

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

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

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

      </xs:complexType>

     </xs:element>

     <xs:element name="RelatingTemplate" type="ifc:IfcPropertySetTemplate" nillable="true"/>

    </xs:sequence>

   </xs:extension>

  </xs:complexContent>

 </xs:complexType>

EXPRESS Specification


ENTITY IfcRelDefinesByTemplate

 SUBTYPE OF (IfcRelDefines);

  RelatedPropertySets : SET [1:?] OF IfcPropertySetDefinition;

  RelatingTemplate : IfcPropertySetTemplate;

END_ENTITY;

 EXPRESS-G diagram

Link to this page

	Definiert durch Vorlage - Relation: Relation zwischen einem Merkmal und dessen Definition / Schablone
	Rel Defines By Template
	Définition par modèle