topic Re: receive task - what does it really do inside engine in Alfresco Archive

receive task - what does it really do inside engine

bapu — Thu, 01 Sep 2011 19:17:54 GMT

I know that when receive task is reached process state is committed to the persistence store.Question is what all the things being persisted or Can someone point me to activiti source code part to look at?thanksB

Re: receive task - what does it really do inside engine

trademak — Thu, 01 Sep 2011 19:43:35 GMT

Hi,

This is not one class that you can take a look at. It's at the core of the process engine.
Best would be to find your way through the source code. The ExecutionEntity is an important class to take a look at.

Best regards,

Re: receive task - what does it really do inside engine

bapu — Thu, 01 Sep 2011 22:10:49 GMT

Thanks Tijs .
I traced(debug) the source - but did not see how Engine commit context.
Basically what i am looking for - is there a way i can commit the workflow context in ServiceTask without using Receive Task.
I don't want to pause the workflow and don't want to signal.

–
thanks
Bapu

Re: receive task - what does it really do inside engine

ronald_van_kuij — Thu, 01 Sep 2011 23:02:05 GMT

Then vote for ACT-126 in jira

Re: receive task - what does it really do inside engine

ronald_van_kuij — Thu, 01 Sep 2011 23:46:30 GMT

Seems to be already in a branch, so might comer sooner than expected. Then I can remove my own version…

Re: receive task - what does it really do inside engine

trademak — Fri, 02 Sep 2011 07:07:06 GMT

It's even better, it's in trunk already 😉

Best regards,

Re: receive task - what does it really do inside engine

lichtin — Fri, 02 Sep 2011 07:55:21 GMT

Although when I read Bapu's posts, he does not want to continue asynchronously.
Or perhaps I do not understand what ACT-126 will provide exactly.. the jira is terse.

Re: receive task - what does it really do inside engine

ronald_van_kuij — Fri, 02 Sep 2011 09:12:22 GMT

Basically what i am looking for - is there a way i can commit the workflow context in ServiceTask without using Receive Task.

That is what the async functionality does (maybe a different name would help)

I don't want to pause the workflow

You don't pause it, basically you say, commit what has been done up to now and continue. So you have to put it on the next node

and don't want to signal.

And you do not have to do this, since the async functionality does this for you.

Re: receive task - what does it really do inside engine

bapu — Fri, 02 Sep 2011 16:57:42 GMT

Looks like http://jira.codehaus.org/browse/ACT-126 is good. But i was not clear on ACT-126. Does this fix A) persist/commit context after every task or B) does it persist context after receive task and continue without any signal?

But in my case - sorry that i was not clear..
What i really want to achieve is - take a snapshot of context as needed between tasks. In case of any error i want to go back to previous context data? Can Activiti provide a way to versioning the context data and persist?

thanks lot,
bapu

Re: receive task - what does it really do inside engine

ronald_van_kuij — Fri, 02 Sep 2011 20:22:55 GMT

It does a commit when you tell it to.

For your other question, no there is no such functionality, since lots of things could have been done outside the realm of Activiti. You should model those in your process. For technical errors, there is a rollback to the previous stable state.