On Tue, Nov 18, 2014 at 9:53 AM, Andrea Aime <[email protected]>
wrote:
> On Tue, Nov 18, 2014 at 5:18 PM, Justin Deoliveira <
> [email protected]> wrote:
>
>> Yeah, I have thought about this before. What i was thinking was that we
>> would have a metadata table stored by jdbc config to store various types of
>> stuff. One of the things could be a version of the data directory. However,
>> I am not sure if we have anything that indicates that. I was thinking we
>> could add a simple number and increment it everytime the configuration
>> changes. Anyways, might be some issues with that but that was my initial
>> thinking on the issue.
>>
>
> Right, that is one concern, changes in the data model should be reflected
> in the persisted vision of it (objects and direct properties) that
> JDBCConfig has of the data model.
>
> And that's one thing... the other thing is that JDBCConfig itself could
> have some new nested property, or a new handling for a
> derived property, and so on.
>
> So I guess if we go by the version numbers, we'd need two, one for the
> GeoServer object model, and one for the JDBCConfig
> interpretation of it
>
> I'm just worried about the GeoServer object model part, will people
> remember to update the number when new direct
> fields, or new objects are added into the model?
> Maybe JDBCConfig could do a hash of the objects and direct fields, and
> compare with one stored in the database.
> For nested fields we could also do the same... the issue is with the
> derived properties, which are handled programmatically...
> so yeah, there we'd probably need a a version number of sorts, hoping that
> whoever works on JDBCconfig remembers
> to update it?
>
> Well I think it kind of happens infrequently enough to be manageable, but
yeah something we would have to remember. But yeah, some sort of hash to
automatically detect would be ideal if it worked.
> Cheers
> Andrea
>
> --
> ==
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> ==
>
> Ing. Andrea Aime
> @geowolf
> Technical Lead
>
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--
Justin Deoliveira
VP Engineering | Boundless <http://boundlessgeo.com/>
[email protected]
@boundlessgeo <http://twitter.com/boundlessgeo/>
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