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rollback question??

tanxu1213

hi!
I have a request like this:
process define: start event->Task A->Task B->Task C->end event
I need to rollback to Task A when Task B completed.
how to do this?thanks!!!

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tomcheng76

if you do some manual db operation on task b, you have to rollback manually.

create a xor gateway between b and c, create a xor gateway in front of a

Start-X-A-B-X-C-End<br>      |__R__|
X-C , you can specify condition on the path (when should the gateway pass the execution to C)

tanxu1213

well,can i rollback task from B to A?

rollback.png

tomcheng76

You can, click the "rollback" line, in main config, you can type your condition.
for example you set a process variable name "rollback"

in the condition, you can type "${rollback}" without double quote, then the process engine will check if rollback is true in your execution, if that is true, it will forward the execute back to Task A.

For the "go" line, type ${!rollback}

in fact, it is not a rollback, it is a re-execution of task A. hope this help.

process_0.png

tanxu1213

You can, click the "rollback" line, in main config, you can type your condition.
for example you set a process variable name "rollback"

in the condition, you can type "${rollback}" without double quote, then the process engine will check if rollback is true in your execution, if that is true, it will forward the execute back to Task A.

For the "go" line, type ${!rollback}

in fact, it is not a rollback, it is a re-execution of task A. hope this help.

got it!!thanks a lot!!!