5.1.3.27 IfcRelAssignsToProduct
5.1.3.27.1 Semantic definition
The objectified relationship IfcRelAssignsToProduct handles the assignment of objects (subtypes of IfcObject) to a product (subtypes of IfcProduct). The Name attribute should be used to classify the usage of the IfcRelAssignsToProduct objectified relationship. The following Name values are proposed:
- 'Context' : Assignment of a context specific representation, such as of structural members to a different context representation (with potentially different decomposition breakdown) such as of building elements for a specific context specific representation.
- 'View' : Assignment of a product (via RelatingProduct) that is decomposed according to a discipline view, to another product (via RelatedObjects) that is decomposed according to a different discipline view. An example is the assignment of the architectural slab to a different decomposition of the pre manufactured sections of a slab (under a precast concrete discipline view).
{ .change-ifc2x3}
5.1.3.27.2 Entity inheritance
5.1.3.27.3 Attributes
| # | Attribute | Type | Description |
|---|---|---|---|
| IfcRoot (4) | |||
| 1 | GlobalId | IfcGloballyUniqueId |
Assignment of a globally unique identifier within the entire software world. |
| 2 | OwnerHistory | OPTIONAL 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. |
| 3 | Name | OPTIONAL IfcLabel |
An 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. |
| 4 | Description | OPTIONAL IfcText |
An optional description, provided to exchange informative comments. |
| IfcRelAssigns (2) | |||
| 5 | RelatedObjects | SET [1:?] OF IfcObjectDefinition |
Related objects, which are assigned to a single object. The type of the single (or relating) object is defined in the subtypes of IfcRelAssigns. |
| 6 | RelatedObjectsType | OPTIONAL IfcStrippedOptional |
Particular type of the assignment relationship. It can constrain the applicable object types, used within the role of RelatedObjects. |
| Click to show 6 hidden inherited attributes Click to hide 6 inherited attributes | |||
| IfcRelAssignsToProduct (1) | |||
| 7 | RelatingProduct | IfcProductSelect |
Reference to the product or product type to which the objects are assigned. |
5.1.3.27.4 Formal propositions
| Name | Description |
|---|---|
| NoSelfReference |
The instance to which the relation points, as provided by RelatingProduct, shall not be contained in the set of RelatedObjects. |
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5.1.3.27.5 Concept usage
| Concept | Usage | Description | |
|---|---|---|---|
| IfcRoot (2) | |||
| Revision Control | General |
Ownership, history, and merge state is captured using IfcOwnerHistory. |
|
| Software Identity | General |
IfcRoot assigns the globally unique ID. In addition, it may also provide a name and description for the concept. |
|
| Click to show 2 hidden inherited concepts Click to hide 2 inherited concepts | |||
5.1.3.27.6 Formal representation
ENTITY IfcRelAssignsToProduct
SUBTYPE OF (IfcRelAssigns);
RelatingProduct : IfcProductSelect;
WHERE
NoSelfReference : SIZEOF(QUERY(Temp <* SELF\IfcRelAssigns.RelatedObjects | RelatingProduct :=: Temp)) = 0;
END_ENTITY;
