Let me note that this is only a particular case of higher-level registries.  
AFAIK, at the moment, our approach to higher-level registries is to expose our 
metadata through REST and let the higher-level registry manipulate it.  I think 
we should be more supportive, and that the solution for this problem should be 
taken in the broader context.

In the narrower context, I think the better approach would be for the form 
developer to send the descriptions and id/uuids of his/her proposed concepts to 
the central authority, which either accepts them or provides substitute 
concepts with their own id/uuids.  Our task would be to make this substitution 
easy, given that we are now capable of having concept-valued global properties 
and attributes, and of packaging concepts into custom data types.

In this regard, I developed a protocol for this type of proposal/substitution 
for use in the HR module last summer.  It worked OK so long as the central 
authority did not make a mistake; it did not have a means for the central 
authority to request a substitution except in response to a proposal from the 
field.



From: [email protected] [mailto:[email protected]] On Behalf Of Michael Seaton
Sent: Thursday, May 10, 2012 2:33 PM
To: [email protected]
Subject: Re: [OPENMRS-DEV] Concept Proposals: a simpler workflow

Hi Darius,

I think this is a great solution, and would meet our form development needs 
very well.  We can certainly talk about potential for developer collaboration 
on this, though I can't promise anything...

Thanks for thinking this through,
Mike


On 05/10/2012 02:01 PM, Darius Jazayeri wrote:
Hi All,

I'm working through a simpler approach to Concept Proposals that what has been 
attempted several times before, and never finished, and I thought I'd share my 
thoughts while they're fresh.

I'm particularly interested in the scenario where:

  *   In the cloud there's a concept authority (in my case MVP/CIEL) who 
manages your dictionary, and you periodically pull updates from there
  *   You have one server that has your official concept dictionary (could be 
your metadata, forms, or production server)

     *   No development work happens directly on this machine. Concept 
dictionary and forms are developed elsewhere, and imported.

  *   You have one or more development machines where you do 
(potentially-messy) development and testing of forms
So, the forms development workflow would basically be:

  1.  On a development machine, starting with your master dictionary, you work 
on a form. It is expected that you will create a bunch of new concepts, revise 
them, and delete some of them that were mistakes.
  2.  When your form is ready-to-go, you identify all concepts on your form 
that do not come from the master dictionary (i.e. they were newly-created)

     *   with HTML Form Entry this should be easy to automate, by checking 
whether there are any concept references not in the form of MVP:###. Maybe 
XForms and Infopath could do something similar.

  1.  You send that batch of new concepts up to a web service on the concept 
authority in the cloud, as proposals. You get back tokens you can use to check 
the status of your proposals.
  2.  (Periodically you ping the concept authority, until all proposals from 
that batch are resolved.)
  3.  You hit the concept authority and download its official versions of the 
concepts that you created locally, and these replace your locally-created 
concepts.

     *   I hope we can leverage the Metadata Sharing module to do this pretty 
easily.

  1.  (Depending on the form entry technology) You edit your form to refer to 
the new official versions of the concepts you proposed.
  2.  At this point you export the form from your dev machine, and import it 
into your metadata/forms/production server.
I think the difference between this and prior work on Concept Proposal is that 
I'm saying:
1. You should do forms development on a separate dev machine whose dictionary 
is expected to get messy.
2. Instead of creating concept proposals, you create actual concepts, so you 
can do real testing with them.

All this leads me to think that we can produce a minimum viable 
product<http://en.wikipedia.org/wiki/Minimum_viable_product> of the Concept 
Proposal module with only these features:

(client-side, for use on forms development machines)

  *   every time you create a new concept, it is marked as "temporary"
  *   you can view a list of all temporary concepts, and delete ones you don't 
like
  *   you can select some temporary concepts and "propose to master dictionary"
  *   you can see a list of all your submitted proposals, along with their 
current status
  *   when a proposal has been marked as complete by the server, it will 
overwrite your local "temporary" concept with the new one officially created, 
and clear the "temporary" flag.
(server-side)

  *   web service for proposing a batch of concepts
  *   web service for checking the status of a proposal
  *   UI showing a list of all open proposals
  *   UI for choosing the action for each item in the batch of proposals

     *   Created New Concept (specify the concept)
     *   Already Exists (specify the concept)
     *   Rejected (specify the free-text reason)

  *   Email notification when a new proposal comes in.
It's possible that some ThoughtWorks developers-in-training might work on this 
as a project. Or I might propose this as a sprint. What do people think about 
the approach? In particular, is there anyone out there who finds this approach 
consistent with their needs, and would contribute some dev time to helping make 
it happen?

-Darius
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