|modifications||attributes RelatingResource definition||Changed from IfcResource to IfcResourceSelect|
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).
EXAMPLE 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).
HISTORY New entity in IFC2x.
|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, |
> NOTE only the last modification in stored - either as addition, deletion or modification.
> IFC4 CHANGE 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.|
|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 IfcObjectTypeEnum||Particular type of the assignment relationship. It can constrain the applicable object types, used within the role of RelatedObjects.|
> IFC4 CHANGE The attribute is deprecated and shall no longer be used. A NIL value should always be assigned.
|7||RelatingResource||IfcResourceSelect||Reference to the resource to which the objects are assigned to.|
> IFC4 CHANGE Datatype expanded to include IfcResource and IfcTypeResource.
IfcRoot assigns the globally unique ID. In addition it may provide for a name and a description about the concept.
Ownership, history, and merge state is captured using IfcOwnerHistory.
ENTITY IfcRelAssignsToResource SUBTYPE OF (IfcRelAssigns); RelatingResource : IfcResourceSelect; WHERE NoSelfReference : SIZEOF(QUERY(Temp <* SELF\IfcRelAssigns.RelatedObjects | RelatingResource :=: Temp)) = 0; END_ENTITY;