Does flowable process engine have a process rewind functionality?

Flowable Engine
1

We are currently modeling a process with a multi-step set of complex input forms that requires to be managed sequentially. The user may however change his mind during the process and come back to a previously already executed step. A rewind functionality that is disabling (not deleting) executed tasks and return in a consistent state will do the job. I didn’t find anything like this in the documentation. Does something like this exists ? Does somebody already imagined a strategy for such problems to solve (canceling the running process and reinitializing a new one at some stage by example) ? Thanks in advance for sharing.

1 Like
2

Hi,

In the case when you need to move execution from one place to another you can have a look on

Regards
Martin

3

Hi,

There is some additional prototyping of this kind of feature going on, but I’m not sure when it might be ready for real use. The V6 engine makes this a lot more generic and predictable than the V5 architectures.

Cheers
Paul.

4

Hi,

I have a similar need to “rewind” processes under certain conditions. Martin Grofcik’s code worked for me in version 5, but I am not clear on how to adapt it to version 6. At the bottom I pasted my Command class for version 5. I gather from the migration guide that I should obtain the ExecutionEntityManager from the CommandContext and get the existing execution using findById. What should I do after that?

Perhaps the following

    execution.setCurrentFlowElement(initialFlowElement);
    processInstanceHelper.startProcessInstance(processInstance, commandContext, variables);

with variables obtained from the execution?

Thanks
Florian

    public class RestartProcessCommand implements Command<Void> {
            private final String executionId;
            private final String activityId;

            public RestartProcessCommand(String executionId, String activityId) {
                    this.executionId = executionId;
                    this.activityId = activityId;
            }

            public Void execute(CommandContext commandContext) {
                    ExecutionEntity execution = commandContext.getExecutionEntityManager().findExecutionById(this.executionId);
                    execution.setActivity(new ActivityImpl(this.activityId, execution.getProcessDefinition()));
                    execution.start();
                    return null;
            }           
    }
5

In the new Flowable V6 there is the ChangeActivityStateBuilder that can be used to move the process to different states. You can get access to it through RuntimeService#createChangeActivityStateBuilder.

For examples have a look at the RuntimeServiceChangeStateTest