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  1. OMG Issue

UML14 — Guard conditions at fork nodes - UML2 Superstructure issue

  • Key: UML14-418
  • Legacy Issue Number: 6512
  • Status: closed  
  • Source: oose Innovative Informatik eG ( Tim Weilkiens)
  • Summary:

    I have a question about the token flow traffic rules within activity

    It is allowed to have guards at outgoing edges from fork nodes.
    The specification says about fork nodes:

    "When an offered token is accepted on all the outgoing edges,
    duplicates of the token
    are made and one copy traverses each edges."

    This means that the fork node offers tokens to its outgoing edges, if
    all guard
    conditions evaluates to true. So there is a dependency between the
    parallel flows
    after a fork node.

    Is that true?

    I think the fork node should offer tokens on all outgoing edges that
    accept the token.
    If there is a guard condition at an outgoing edge, it is possible
    that the flow continues
    only on two of three outgoing edges.

  • Reported: UML 1.5 — Fri, 7 Nov 2003 05:00 GMT
  • Disposition: Resolved — UML 1.4.2
  • Disposition Summary:

    see above

  • Updated: Fri, 6 Mar 2015 20:58 GMT