Question regarding ID Constraints

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Jørn Klungsøyr

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Nov 21, 2011, 9:03:40 AM11/21/11

to openrosa-...@googlegroups.com

Is there a reason why one needs to restrict the combined scheme:value keypair to be no longer than 80 characters (ie, so that varchar(80) can be used)?

I would assume that a mobile tool connecting to server X would utilize scheme:value keypairs that corresponds to what the server X will be able to handle anyhow?

And if connecting to server Y, it would use what is used by that server.

Is there something I’m missing?

Best

Jørn

____________________________________________________________________________
Jorn Klungsoyr
openXdata - Centre for International Health, University of Bergen, Norway
www.openxdata.org / www.cih.uib.no / www.openrosa.org / www.open-mobile.org
Mobile: +4791365731, Skype/GoogleTalk: jornklung Alternative email: jorn.kl...@gmail.com
Post: Postboks 7800, 5020 Bergen, Visit: Årstadveien 21, 5th Floor, Bergen
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From: openrosa-...@googlegroups.com [mailto:openrosa-...@googlegroups.com] On Behalf Of Anton de Winter
Sent: Saturday, November 19, 2011 1:02 AM
To: openrosa-...@googlegroups.com
Subject: Re: MetaData API discussion period: Voting begins soon!

Update:

Talks are still going pretty strong in the Skype chat*, so we'll be pushing the voting period up a little bit. I will keep everyone posted!

Thanks

Anton

* Archived logs can be seen here for those playing from home ;)

On Fri, Nov 18, 2011 at 3:23 PM, Anton de Winter <adew...@dimagi.com> wrote:

done

On Fri, Nov 18, 2011 at 3:13 PM, Mitch Sundt <msu...@cs.washington.edu> wrote:

Please add me also...

On Fri, Nov 18, 2011 at 11:52 AM, Anton de Winter <adew...@dimagi.com> wrote:

Sorry it hasn't worked out, no idea what could be wrong. I've added you to the chat :)

On Fri, Nov 18, 2011 at 2:40 PM, Jørn Klungsøyr <jorn.klung...@gmail.com> wrote:

Hi,

I tried using that link, and it open up the chat window, with like 6 members (usual suspect :))

But after a short while, each of the members disappear, and then it says that I have left the chat.

So seems you can’t join a chat that way?

Jornklung is my id.

Best

Jørn

From: openrosa-...@googlegroups.com [mailto:openrosa-...@googlegroups.com] On Behalf Of Anton de Winter
Sent: Thursday, November 17, 2011 10:59 PM
To: OpenRosa Working Group
Subject: Re: MetaData API discussion period: Voting begins soon!

Sorry for the load of email. Just figured out how to publicly link to a skype group chat:

skype:?chat&blob=2pSByFPIcAva_JLXE2kR8r2qBavK2_4mlpyViJGZr596luQTeQNe2iZ4CYTF1bkuMMVg5jtheE6CE3zZ_VC7LXv0XY_U556LKY1INu9eDfuOOlAfvv4p7w

(That should take you to the OpenRosa API group chat)

On Thu, Nov 17, 2011 at 4:45 PM, Anton de Winter <adew...@dimagi.com> wrote:

Dear ORWG

MetaData Scheme API

Proposed Voting start date: 18h00 EST (15h00 PST, 23h00 GMT) - 18 November 2011

Proposed Voting end date: 12h00 EST (9h00 PST, 17h00 GMT) - 21 November 2011

Voting Rules

As mentioned in my previous email, I'd like to start final discussions about the MetaData API so that we can get to a vote. Please use this thread to discuss the API before the vote.

I've also created a skype group chat so that we can speed up conversations. Please send out your skypename, or add me (skypeid: antondewinter) to get into the chat!

Thanks!
Anton de Winter

--
Anton de Winter

Dimagi Inc

(617) 692 0786

529 Main St

Charlestown, MA

02129

--
Anton de Winter

Dimagi Inc

(617) 692 0786

529 Main St

Charlestown, MA

02129

--
Anton de Winter

Dimagi Inc

(617) 692 0786

529 Main St

Charlestown, MA

02129

--
Mitch Sundt
Software Engineer
http://www.OpenDataKit.org
University of Washington
mitche...@gmail.com

--
Anton de Winter

Dimagi Inc

(617) 692 0786

529 Main St

Charlestown, MA

02129

--
Anton de Winter

Dimagi Inc

(617) 692 0786

529 Main St

Charlestown, MA

02129

Anton de Winter

unread,

Nov 21, 2011, 9:15:42 AM11/21/11

to openrosa-...@googlegroups.com

Hey Jørn,

After much discussion we came down on the following: Supported id or xmlns length MUST be at least 249, ideally the server should be able to support arbitrary length. (From the API doc)

The problem comes in when you author a form on a certain platform (or by hand) and use an ID/xmlns string that is longer than what is supported on server Y. When you then upload the form to Y, bad things likely will happen (cutting off of the ID, a plain error, etc).

Presumably this won't be an issue when you use tools provided by a server to make a form that then gets uploaded to that same server. What we're aiming for is interoperability however, so in this case the length needs a tighter definition to ensure that all tools supporting the API produce forms that work with all API supporting servers.

Cheers,

Anton

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