How to implement "undo aggregation"?

Hello
We are doing an integration project for RFID serialization, using AII 5.1. There is a use case I donu2019t know how to tackle: Disaggregating.
The user wants to be able to undo an aggregation from the warehouse handheld application.
We are using XI/PI so we can implement custom transactions.
What will be the best approach? Is there a default PML/activity/rule we can use?
Thanks!
Gonzalo

I don't know of any such function already implemented, but you could easily write your own. You would need a stack to hold all the details of each function performed. Eveery time you do anything, get the program to add details of it to the stack. Then a simple algorithm should be able to return the table to its original state.

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Edited by: gibi_31 on Aug 19, 2010 3:08 AM
Edited by: gibi_31 on Aug 19, 2010 3:11 AM

Hello,
Upon a user action on V1:
1. M1 change
=> add UndoableEdit to current CompoundEdit
=> notify V1
=> notify M2
2. M2 change
=> add UndoableEdit to current CompoundEditWhy?
Do you need to be able to undo the M2 change alone in any other case than undoing M1's change?
And if you don't add M2 change to the compound edit, doesn't the M2 update triggered by undoing the the M1 undo the M2 state automatically (thus performing the M2 undo)?
And this is my problem: when undoing change on M1, I need to notify listeners (V1 and M2), but in this case M2 should not be notified because M2 has already restored its previous state in the CompoundEdit undo chain.
A solution might be to inhibit M2 listener if we're inside a undo/redo, but I feel it's not clean and not sure it will always work...I agree it looks unclean (and quite dangerous actually if the app ever needs to support some form of multi-threaded model changes).
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J.

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