An IfcRelPositions relationship informs on the positioning dependency between a product and a positioning element.
This relationship does not affect the geometric representation of a product nor its geometrical placement, which is done through subtypes of IfcObjectPlacement.
Assignment of a globally unique identifier within the entire software world.
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,
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.
Optional description, provided for exchanging informative comments.
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Positioning element defining the source of the relative position.
|6||RelatedProducts||SET [1:?] OF IfcProduct||
Relatively positioned product.
The instance of the PositionedElement shall not be the same instance as the Product.
Ownership, history, and merge state is captured using IfcOwnerHistory.
IfcRoot assigns the globally unique ID. In addition it may provide for a name and a description about the concept.
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ENTITY IfcRelPositions SUBTYPE OF (IfcRelConnects); RelatingPositioningElement : IfcPositioningElement; RelatedProducts : SET [1:?] OF IfcProduct; WHERE NoSelfReference : SIZEOF(QUERY(temp <* RelatedProducts | RelatingPositioningElement :=: temp)) = 0; END_ENTITY;