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  1. OMG Issue

SYSML17 — Figure 9-16 and Figure 9-17 'Usage example of item flow decomposition': multiple inconsistencies

  • Key: SYSML17-352
  • Status: open  
  • Source: Webel IT Australia ( Dr. Darren Kelly)
  • Summary:


    Figures 9.16 and 9.17 are examples of item flow decomposition that modelers might choose...

    Should be 'Figures 9-16 and 9-17'


    In Figure 9-16, the item flow classifier (EnginePart) is a supertype of the classifiers of the item flows in the decomposition. The flow properties are all in the types of the nested ports ...

    But it does not show those flow properties in the lower BDD (compare with attachment 1).

    It would make sense to show the flow property direction indicators in the structure compartment of A1 in the lower BDD.

    Minor/optional: If the parent ports do not have any flow properties in this example, it might be better to not show the flow direction indicator in the parent port in Figure 9-16, even though the flow direction for each nested port within each parent port is in the same direction. Then, for contrast, the flow direction indicators can be shown on the parent ports of Figure 9-17, noting they have explicit flow properties.

    p.115 and p.116:

    In Figure 9-17, the item flow classifier (Engine) composes the classifiers of the items flows in the decomposition from Figure 9-17.

    This should probably be 'from Figure 9-16'.

  • Reported: SysML 1.6 — Tue, 30 Jun 2020 00:29 GMT
  • Updated: Thu, 2 Jul 2020 13:04 GMT