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| _State() |
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| stubie |
 Posted: Thu Aug 07, 2003 2:28 pm Post subject: _State() |
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Novice
Joined: 05 Nov 2001
Posts: 14
Location: Charlotte, NC
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Has anybody worked with _State() in transition conditions? I have a model that has a connector with _State() = _Skipped, and the connector evaluates false, even though the source activity has a status (as shown in the monitor) of "Skipped".
Have I coded this wrong? |
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| Ratan |
| Posted: Thu Aug 07, 2003 2:41 pm Post subject: |
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Grand Master
Joined: 18 Jul 2002
Posts: 1245
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You cant use _state() = _Skipped. Activity goes into this state when it is skipped as a result of transition condition. The connectors out of such activities are always false.
_________________
-Ratan |
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| stubie |
| Posted: Thu Aug 07, 2003 4:37 pm Post subject: Thanks |
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Novice
Joined: 05 Nov 2001
Posts: 14
Location: Charlotte, NC
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Thanks for the info. Anyone have any idea why the product designers included this, since it appears to have no use?
What are the valid condition checks? _Expired and _ForceFinished? (_Finish seems just as worthless as _Skipped if _Skipped always evaluates false).
Finally, is there any documentation on how this works? I'd like to see an example of the use of _State( string ). |
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| jmac |
| Posted: Thu Aug 07, 2003 6:51 pm Post subject: |
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Jedi Knight
Joined: 27 Jun 2001
Posts: 3081
Location: EmeriCon, LLC
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Stuart:
It makes no sense logically to have the _Skipped testing the source activity of the control connector, since as Ratan points out the connector would be forced to false due to "Dead Path Elimination".
Why the developers put it there is a good question, but maybe this is the answer. The following is a quote from the DesignIssues unit of my basic material:
| Quote: |
If an activity does expire you can test it's state with a transition condition like the following
_State(<activity name>) = _Expired
where activity name is the name of the activity whose state is to be tested, it may be omitted to indicate the current activity. Any activity whose state is tested, must be in the control path |
Now of course, I don't remember where or how I got this information, but maybe the _Skipped makes sense when used in this format. You could be testing if some Previous activity, that was not Dead path eliminated had been skipped
Hope this helps....
Regards
_________________
John McDonald
RETIRED |
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