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  1. OMG Issue

OCL25 — OCL 2: what is a collection?

  • Key: OCL25-191
  • Legacy Issue Number: 5973
  • Status: open  
  • Source: HL7 ( Grahame Grieve)
  • Summary:

    OCL 2 doesn't really define what a collection is. In essence,
    a particular UML construct is arbitrarily designated as
    the OCL collection, and a series of properties are assigned
    to it

    This question arises in 2 different ways:

    • can you sub-class one of the concrete descendents in
      a UML diagram - by referring to the OCL package - and thereby
      add functionality to your own collection types
    • are all parameterised classifiers collections? if you
      define a parameterised class, how does an OCL user or
      environment know whether it's a collection or not?

    perhaps a stereotype should be intrroduced to allow for
    unambiguous resolution of these issues

  • Reported: OCL 2.0b1 — Tue, 22 Apr 2003 04:00 GMT
  • Updated: Thu, 8 Oct 2015 14:12 GMT