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Message
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| MaheshPN |
 Posted: Thu Oct 14, 2004 7:46 am Post subject: Join problem |
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Master
Joined: 21 May 2003
Posts: 245
Location: Charlotte, NC
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Hi Guys,
I have a situation where, activity A will start the Activity B and/or Activity C depending on the value. Activity D should start when one of them completes. When both the activities B and C are in the ready state and activity C finishes first, is there any way we can start the activity D?
Right now, it will not start until both the activities (B & C) finish.
Let me know your thoughts.
Thanks,
-Mahesh |
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| CHF |
| Posted: Thu Oct 14, 2004 7:53 am Post subject: |
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Master
Joined: 16 Dec 2003
Posts: 297
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For Activity D , put condition
| Code: |
| "Atleast one incoming connector true" |
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| MaheshPN |
| Posted: Thu Oct 14, 2004 8:28 am Post subject: |
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Master
Joined: 21 May 2003
Posts: 245
Location: Charlotte, NC
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Well,
Thats what I thought. Thats the default setting. Thats not helping out  .
Thanks,
-Mahesh |
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| CHF |
| Posted: Thu Oct 14, 2004 8:54 am Post subject: |
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Master
Joined: 16 Dec 2003
Posts: 297
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Well, Now I understand what you are trying to do. 
You want to start D even before B finishes (C already finished).
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| CHF |
| Posted: Thu Oct 14, 2004 9:10 am Post subject: |
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Master
Joined: 16 Dec 2003
Posts: 297
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It is my opinion that, by Workflow design itself, if you have control connectors to D from B and C, you cannot achieve what you are trying to do.
I am thinking of a turnaround solution for this. This may not work for you.
You have 4 activities A, B, C, D. Put control connectors from A to B, A to C, and A to D. DO NOT add any transition condition from A to D. DO NOT put control connectors from B to D and also from C to D.
In runtime, as soon as A finishes Workitems will be created for D and depending on transition conditions for B and C also be created. Now you could start D anytime you want independent of the state of B and C. As soon as anyone of B or C finishes , issue a start on D.
This solution may be inefficient and may not work for you. This is my opinion only.
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| MaheshPN |
| Posted: Thu Oct 14, 2004 11:02 am Post subject: |
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Master
Joined: 21 May 2003
Posts: 245
Location: Charlotte, NC
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Thanks for your Idea. As you said, thats going to create the activity D as parallel activity. I want that to come in sequece after B and/or C.
May be I need to look for some other way of achieving it.
Thanks,
-Mahesh |
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| vennela |
| Posted: Thu Oct 14, 2004 11:47 am Post subject: |
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Jedi Knight
Joined: 11 Aug 2002
Posts: 4055
Location: Hyderabad, India
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There is no easy way to acheive what you are trying to do.
| Code: |
/ ---- B----- \
A X2
\ --- C ----/
\
\ ------ X1 ----- D
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X1 and X2 are UPES activities. X1 is synchronous. X2 is asynchronous.
There is no program assigned for X1
X2 should do the following.
Get the process Instance
Check if this particular process instance has already been served.
If NOT
GET the message from X1 for this process instance and reply
else
discard the message
fi |
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| CHF |
| Posted: Thu Oct 14, 2004 12:13 pm Post subject: |
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Master
Joined: 16 Dec 2003
Posts: 297
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| vennela wrote: |
X2 should do the following.
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I am missing something here. Even if X2 wants to do that job, UPES queue for X2 will get the message only after B and C finishes.
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| vennela |
| Posted: Thu Oct 14, 2004 12:19 pm Post subject: |
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Jedi Knight
Joined: 11 Aug 2002
Posts: 4055
Location: Hyderabad, India
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Well I was on a conference call while posting this
You can change it to
| Code: |
/ ---- B----- X2
A
\ --- C ---- X2
\
\ ------ X1 ----- D
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[/code] |
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| CHF |
| Posted: Thu Oct 14, 2004 12:30 pm Post subject: |
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Master
Joined: 16 Dec 2003
Posts: 297
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| Code: |
/ ---- B
A
\ --- C
\
\ ------ X1 ----- D
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X1 should be synchronous.
X1 should do the following:
Get the current process instance.
Get the activity instances B and C.
Loop a query for states of Avtivity instances B and C until one of the states is in Finished.
Then reply back to WF.
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| CHF |
| Posted: Thu Oct 14, 2004 12:31 pm Post subject: |
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Master
Joined: 16 Dec 2003
Posts: 297
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Well, Vennela I guess we two are working on this at the same time in the same way 
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| vennela |
| Posted: Thu Oct 14, 2004 12:44 pm Post subject: |
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Jedi Knight
Joined: 11 Aug 2002
Posts: 4055
Location: Hyderabad, India
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| Quote: |
Loop a query for states of Avtivity instances B and C until one of the states is in Finished.
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If B and C are not being worked on for 6 months then what happens. Your program will keep looping for 6 months??????? |
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| CHF |
| Posted: Thu Oct 14, 2004 12:55 pm Post subject: |
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Master
Joined: 16 Dec 2003
Posts: 297
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I agree that your solution is the best approach. I was mentioning the solution, not the best solution 
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| jmac |
| Posted: Fri Oct 15, 2004 5:31 am Post subject: |
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Jedi Knight
Joined: 27 Jun 2001
Posts: 3081
Location: EmeriCon, LLC
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| MaheshPN wrote: |
Well,
Thats what I thought. Thats the default setting. Thats not helping out .
Thanks,
-Mahesh |
Just a point of information here.... A control connector is a 3 state object ith can be TRUE, FALSE, or UNEVALUATED. A control connector stays in an UNEVALUATED state until the source activity completes. Navigation TO an activity can never take place if any control connector is in an UNEVALUATED state.
I never tried Vennys solution, but it looks quite interesting. let me know if you have luck with this solution.
Thanks
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John McDonald
RETIRED |
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