Sadly, GeoServer is not the place where our business logic /validation will reside. We have some web
services which receive requests in a custom format, we validate them using our business logic,
modify them, and some WFS requests are sent to GeoServer during this process.
So, to resume : controlling the underlying JDBC transaction used by Geoserver is not possible for a
client. So no begin / commit / rollback available for the client . But it may be possible to add
some validation, as plugins, *on the Geoserver side*.
Thanks a lot for your help Jody!
Julien
On 6/18/2014 7:07 PM, Jody Garnett wrote:
Here, action #3 local validation failed, so the previous actions (action #1
and action #2)
must be rollbacked.
You will not get back the "response" for action#3 in order to test against your own local business
rules. Any validation must occur on the server side.
Is it possible to achieve that with Geoserver?
With a single "<wfs:Transaction>" request, it's not possible to
programatically validate
action #3 , with local business rules, if this validation requires to check
the results of the
application of the previous actions.
This is the case for "validating web feature service" functionality[1] where you teach GeoServer
your "local business rules so it can enforce them during wfs:Transaction.
The code to do this is no longer hooked up (to my knowledge) as the module
lacked a chamption/funding.
It is however still in the GeoTools[2] / GeoServer codebase and if you wire it up against we
would be grateful.
What makes me think that it may be possible to achieve such "external"
transaction controle,
is that the Geotools client seems to do it. Is it?
The GeoTools client holds the changes locally (as a "diff" which it uses to filter any incoming
requests), when you call commit in GeoTools it issues a single Transaction request as described
previously.
--
Jody
[1] http://vwfs.refractions.net
[2]
https://github.com/geotools/geotools/tree/master/modules/extension/validation
[3] https://github.com/geoserver/geoserver/tree/master/src/extension/validation
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