What is the impact of using UIDs which begin with numbers?

Support - Assistance technique
1

Hi Devs,

I recall a few months ago there was some mail related to the use of UIDs which began with numbers, which had been generated externally. According to the DHIS2 spec, it would seem that UIDs must begin with letters. Is there any impact to using UIDs which begin with numbers? If so, what?

Thanks,

Jason

···

Jason P. Pickering
email: jason.p.pickering@gmail.com
tel:+46764147049

2

The rationale for UIDs not beginning with numbers was to ensure that they are also able to be used as XML identifier types (XMLID) and also as it turns out, as column names in many sql databases.

This latter might well cause a problem with externally generated identifiers which start with a digit.

I guess what you bring up suggests two things:

  1. we should create a small section in our dev manual formally defining the syntax (regex?)

  2. we might need to introduce some sort of validation on import

···

On 5 November 2014 10:45, Jason Pickering jason.p.pickering@gmail.com wrote:

Hi Devs,

I recall a few months ago there was some mail related to the use of UIDs which began with numbers, which had been generated externally. According to the DHIS2 spec, it would seem that UIDs must begin with letters. Is there any impact to using UIDs which begin with numbers? If so, what?

Thanks,

Jason

–
Jason P. Pickering
email: jason.p.pickering@gmail.com
tel:+46764147049

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