IFC 4.3.x development

5.1.3.24 IfcRelAssignsToControl

Change log

IFC4

additionswhere_rulesNoSelfReference
deletionswhere_rulesWR1

5.1.3.24.1 Semantic definitions at the entity

The objectified relationship IfcRelAssignsToControl handles the assignment of a control (represented by subtypes of IfcControl) to other objects (represented by subtypes of IfcObject, with the exception of controls).

EXAMPLE  The assignment of a performance history (as subtype of IfcControl) for a building service element (as subtype of IfcObject) is an application of this generic relationship.

HISTORY  New entity in IFC2.0.

IFC2x CHANGE Entity has been renamed from IfcRelControls.

5.1.3.24.1 Attributes

#Attribute Type Description
IfcRoot
1GlobalId IfcGloballyUniqueId Assignment of a globally unique identifier within the entire software world.
2OwnerHistory 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.
3Name 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.
4Description OPTIONAL IfcText Optional description, provided for exchanging informative comments.
IfcRelationship
IfcRelAssigns
5RelatedObjects SET [1:?] OF IfcObjectDefinitionRelated objects, which are assigned to a single object. The type of the single (or relating) object is defined in the subtypes of IfcRelAssigns.
6RelatedObjectsTypeOPTIONAL 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.
IfcRelAssignsToControl
7RelatingControl IfcControl Reference to the IfcControl that applies a control upon objects.

5.1.3.24.2 Entity inheritance

dot_inheritance IfcRelAssignsToControl IfcRelAssignsToControl IfcRelAssigns IfcRelAssigns IfcRelAssignsToControl->IfcRelAssigns IfcRelAssigns_children 5 more... IfcRelAssigns_children->IfcRelAssigns IfcRelationship IfcRelationship IfcRelAssigns->IfcRelationship IfcRelationship_children 5 more... IfcRelationship_children->IfcRelationship IfcRoot IfcRoot IfcRelationship->IfcRoot IfcObjectDefinition IfcObjectDefinition IfcObjectDefinition->IfcRoot IfcPropertyDefinition IfcPropertyDefinition IfcPropertyDefinition->IfcRoot

5.1.3.24.3 Definitions applying to General Usage

5.1.3.24.3.1 Identity

IfcRoot assigns the globally unique ID. In addition it may provide for a name and a description about the concept.

5.1.3.24.3.2 Revision Control

Ownership, history, and merge state is captured using IfcOwnerHistory.

5.1.3.24.4 Formal representations

ENTITY IfcRelAssignsToControl
 SUBTYPE OF (IfcRelAssigns);
	RelatingControl : IfcControl;
 WHERE
	NoSelfReference : SIZEOF(QUERY(Temp <* SELF\IfcRelAssigns.RelatedObjects | RelatingControl :=: Temp)) = 0;
END_ENTITY;