IFC 4.3.x development

5.4.3.45 IfcRelPositions

Change log

5.4.3.45.1 Semantic definitions at the entity

An IfcRelPositions relationship defines the relationship that positions a product related to a positioning element..

5.4.3.45.1 Attributes

#	Attribute	Type	Description
IfcRoot
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.
IfcRelationship
IfcRelConnects
IfcRelPositions
5	RelatingPositioningElement	IfcPositioningElement	Positioning element defining the source of the relative position.
6	RelatedProducts	SET [1:?] OF IfcProduct	Relatively positioned product.

5.4.3.45.2 Entity inheritance

5.4.3.45.3 Definitions applying to General Usage

5.4.3.45.3.1 Identity

5.4.3.45.3.2 Revision Control

5.4.3.45.4 Formal representations

ENTITY IfcRelPositions
 SUBTYPE OF (IfcRelConnects);
	RelatingPositioningElement : IfcPositioningElement;
	RelatedProducts : SET [1:?] OF IfcProduct;
 WHERE
	NoSelfReference : SIZEOF(QUERY(temp <* RelatedProducts | RelatingPositioningElement :=: temp)) = 0;
END_ENTITY;