5.1.3.28 IfcRelAssignsToResource
5.1.3.28.1 Semantic definition
The objectified relationship IfcRelAssignsToResource handles the assignment of objects (as subtypes of IfcObject), acting as a resource usage or consumption, to a resource (as subtypes of IfcResource).
The assignment of a resource usage to a construction resource is an application of this generic relationship. It could be an actor, as person or organization assigned to a labor resource, or a raw product assigned to a construction product or material resource). New entity in IFC2x.5.1.3.28.2 Entity inheritance
5.1.3.28.3 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, Only the last modification is stored - either as addition, deletion or modification. The attribute has been changed to be OPTIONAL. |
| 3 | Name | OPTIONAL 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. |
| 4 | Description | OPTIONAL IfcText |
Optional description, provided for exchanging 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. The attribute is deprecated and shall no longer be used. A NIL value should always be assigned. The attribute type has been changed to IfcStrippedOptional given that IfcObjectTypeEnum has been deleted. |
| Click to show 6 hidden inherited attributes Click to hide 6 inherited attributes | |||
| IfcRelAssignsToResource (1) | |||
| 7 | RelatingResource | IfcResourceSelect |
Reference to the resource to which the objects are assigned to. Datatype expanded to include IfcResource and IfcTypeResource. |
5.1.3.28.4 Formal propositions
| Name | Description |
|---|---|
| NoSelfReference |
The instance to which the relation points shall not be contained in the set of RelatedObjects. |
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5.1.3.28.5 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 provide for a name and a description about the concept. |
|
| Click to show 2 hidden inherited concepts Click to hide 2 inherited concepts | |||
5.1.3.28.6 Formal representation
ENTITY IfcRelAssignsToResource
SUBTYPE OF (IfcRelAssigns);
RelatingResource : IfcResourceSelect;
WHERE
NoSelfReference : SIZEOF(QUERY(Temp <* SELF\IfcRelAssigns.RelatedObjects | RelatingResource :=: Temp)) = 0;
END_ENTITY;