UML 2.6 RTF Avatar
  1. OMG Issue

UMLR — An Activity Edge cannot connect to Activities

  • Key: UMLR-775
  • Status: open  
  • Source: private person ( Andreas Warnke)
  • Summary:

    A CommunicationPath is a ActivityEdge. An ActivityEdge has source and target properties of type ActivityNode. But an Activity is not an ActivityNode. So the CommunicationPath link vom Activity to Activity is invalid.
    Such a link should be valid - otherwise the diagram in 15.5.5 Examples is wrong.

    Info: Some tools seem to simply allow this:
    <ownedBehavior xmi:type="uml:Activity" xmi:id="EAID_940293B7_001A_4d5d_BCFE_24CB874155E3" name="Create Title Entry" visibility="public" isReadOnly="false" isSingleExecution="false">
    <edge xmi:type="uml:ControlFlow" xmi:id="EAID_B750FB8E_8132_4569_99C2_8C0DFD11F144" visibility="public" source="EAID_940293B7_001A_4d5d_BCFE_24CB874155E3" target="EAID_D4190768_7F03_4546_B5E5_38E4DBE56F19"/>

    Proposed fix: Would it make sense to make an Activity derive from ActivityNode instead of Behavior, and ActivityNode derived from Behavior?

    Maybe i simply understood the current specification wrong - then please ignore my Comment.
    A. Warnke

  • Reported: UML 2.5.1 — Sat, 12 Dec 2020 11:58 GMT
  • Updated: Mon, 4 Jan 2021 08:44 GMT