[QGIS-Developer] QGIS project XSD

[Nyall Dawson]

On 30 June 2017 at 19:44, Matthias Kuhn 🌍 <matthias at opengis.ch> wrote:
> On 06/30/2017 11:32 AM, G. Allegri wrote:
>>     Normally you start with a schema, and from that create xml. To me it
>>     sounds pretty hard to keep a schema updated the other way around? As the
>>     api can always add new/changed parts of xml in it?
>>
>>
>> Even QgsProject won't know if a project is valid until all the delegated
>> classes have tried to deserialize their own parts.
>
> Are you aware of real-world problems that were caused by this?
>
>>
>> I think this is a weak point in QGIS, and it doesn't depend on the
>> serialization format obviously.
>
> I think it's only XML that comes with all these metadescription systems
> like DTD and XSD. I haven't seen anything similar for yaml and json.

Also, on a related note - I'd prefer to see more areas of code move to
the approach of serializing/deserialising to QVariantMaps and using
your recent work on auto converting the maps to XML. It's much less
maintenance this way :)

Nyall