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!!!

[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
      |__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?

[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.

[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!!!