Allow submitted forms to be marked as invalid and resubmitted about aggregate HOT 5 OPEN

I think this is a general issue for anyone wishing to integrate ODK with third party
systems. I don't believe there is a way of doing this currently with ODK. 

I would be willing to work on this issue if the ODK team thinks it would fit into their
main line of development.

Ideas or suggestions on this issue are welcome.

Hi, based on the timing this issue was created, I'm assuming you guys do not believe
this is a priority or have not had time to review. Either way, I just wanted to say
I've actually started working on this based on the v1.1.5 release. I'm trying to keep
the work general enough so that it may at some point later be integrated back to the
main ODK development line if you wish.

At this point, we have defined what we call a 'validation' server that can be enabled/disabled
and configured in the Server Preferences activity on ODK Collect. We have also defined
a preliminary protocol that the client can use to talk with a validation server. Essentially,
the client sends an array of all submitted form ids to the validation server, and it
responds back with any validation errors for those forms (the elements that failed
validation and the reason(s) for failure.) Also, we've added functionality to the UI
that indicates forms that have failed validation on the InstanceChooserActivity, as
well as indicating fields that are invalid on the FormHierarchyActivity.

There are still some issues that need to be sorted out, but we plan to continue iterating
on this issue. Hopefully this paints a clear picture of our intentions if there were
any questions from the previous comments. I'm going to consider this issue as rejected,
but if anyone wants to talk more on this, or the ODK team wants to look at our solution,
please contact me.

Thanks

Sorry about our silence we are just scrambling to get out Collect 1.1.7 and Aggregate
1.0. This is definitely going to be an enhancement. Once we start moving on to new
features for the next set of releases we will start to consider this stuff. Right now
we are trying to move the current stuff out of Beta.