5.1.3.28 IfcRelAssignsToResource
NOTE This entity is not part of a standardized schema subset or implementation level.
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 ).
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.
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,
NOTE Only the last modification is 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.
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 .
IFC4-DEPRECATION The attribute is deprecated and shall no longer be used. A NIL value should always be assigned.IFC4.3.0.1-CHANGE The attribute type has been changed to IfcStrippedOptional given that IfcObjectTypeEnum has been deleted.
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IfcRelAssignsToResource
(1)
7
RelatingResource
IfcResourceSelect
Reference to the resource to which the objects are assigned to.
Table 5.1.3.28.A
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 .
SIZEOF (QUERY (Temp <* SELF \IfcRelAssigns .RelatedObjects | RelatingResource :=: Temp)) = 0
Table 5.1.3.28.B
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.
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Table 5.1.3.28.C
5.1.3.28.6 Formal representation
5.1.3.28.7 References