IfcRelDefinesByTemplate

BACnet MVD

#### IfcRelDefinesByTemplate

Natural language names

| Definiert durch Vorlage - Relation
| Rel Defines By Template
| Définition par modèle

Change log

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 | B
--- | --- | --- | --- | --- | ---
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 |  | 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 | B
--- | --- | --- | --- | --- | ---
IfcRoot
1 | GlobalId | IfcGloballyUniqueId |  | Assignment of a globally unique identifier within the entire software world. | X | X

2

OwnerHistory

IfcOwnerHistory

?

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.

> IFC4 CHANGE The attribute has been changed to be OPTIONAL.

X

X

3 | Name | IfcLabel | ? | 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 | X
4 | Description | IfcText | ? | 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 |  | Property set template that provides the common definition of related property sets. |  | X

##### Definitions applying to Design Transfer View

Concept inheritance

# | Concept | Template | Model View
--- | --- | --- | ---
IfcRoot
| Revision Control | Revision Control | Design Transfer View

##### Definitions applying to BACnet View

Concept inheritance

# | Concept | Template | Model View
--- | --- | --- | ---
IfcRoot
| Revision Control | Revision Control | Design Transfer View

##### Formal representations

XML 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

`

References: IfcPropertySetDefinition IfcPropertySetTemplate

Link to this page