UML 1.4 MAILINGLIST Avatar
  1. OMG Issue

UML14 — The class "Subsystem" inherits from "GeneralizedElement" twice

  • Key: UML14-870
  • Legacy Issue Number: 1510
  • Status: closed  
  • Source: Anonymous
  • Summary:

    Summary: The class "Subsystem" inherits from "GeneralizedElement" twice:

    SubSystem->Package->GeneralizableElement
    SubSystem->Classifier->GeneralizableElement

    The only functionality it adds to Package is the ability to add operations at the Subsystem level as indicated by the statement below:

    "In the metamodel Subsystem is a subclass of both Package and Classifier, whose Features are all Operations."

    I would recommend simplification of the class hierarchy by merging "Subsystem" into "Package" and deriving "Package" from "Classifier":

    Package->Classifier->GeneralizableElement

    The attibute "isInstantiable" of Subsystem can be moved up to Package.

  • Reported: UML 1.1 — Sat, 6 Jun 1998 04:00 GMT
  • Disposition: Resolved — UML 1.2
  • Disposition Summary:

    Considered and declined.

  • Updated: Fri, 6 Mar 2015 21:35 GMT