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  1. OMG Issue

FUML — Issue: CallActionActivation cannot handle more than one concurrent call

  • Key: FUML-7
  • Legacy Issue Number: 13313
  • Status: closed  
  • Source: Model Driven Solutions ( Ed Seidewitz)
  • Summary:

    Specification: Semantics of a Foundation Subset for Executable UML Models, FTF – Beta 1 (ptc/08-11-03)

    Section: (CallActionActivation)


    A call action may fire multiple times concurrently. A call action activation needs to keep track of currently ongoing call executions, so that they can all be terminated if the call action activation is terminated. However, CallActionActivation::callExecution currently has a multiplicity upper bound of 1. Therefore, if a call action fires more than once concurrently, subsequent firings will incorrectly overwrite the reference to the callExecution from the first firing.

    Proposed resolution:

    Under associations, replace CallActionActivation::callExecution with:

    callExecutions: Execution [*] The set of execution objects for currently ongoing calls made through this call action activation.

    At the beginning of CallActionActivation::doAction, replace:

    this.callExecution = this.getCallExecution();

    if (this.callExecution != null) {


    Execution callExecution = this.getCallExecution();

    if (callExecution != null) {


    Throughout CallActionActivation::doAction, replace with this.callExecution with callExection. At the end of CallActionActivation::doAction, replace:

    this.callExecution = null;



    Replace the body of CallActionActivation::terminate with:

    // Terminate all call executions (if any), then terminate the call action activation (self).

    for (int i = 0; i < this.callExecutions.size(); i++)

    { Execution execution = this.callExecutions.getValue(i); execution.terminate(); }


    Add the following operation:

    CallActionActivation::removeCallExecution(execution: Execution)

    // Remove the given execution from the current list of call executions.

    boolean notFound = true;

    int i = 1;

    while (notFound & i <= this.callExecutions.size()) {

    if (this.callExecutions.getValue(i-1) == execution)

    { this.callExecutions.removeValue(i-1); notFound = false; }


  • Reported: FUML 1.0b1 — Wed, 21 Jan 2009 05:00 GMT
  • Disposition: Resolved — FUML 1.0b2
  • Disposition Summary:

    Change the code as proposed

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