Oh!
Yeah, I did not understand that. If you can reproduce this against a
default installation of GeoServer (e.g., using the topp:states layer)
then please create a ticket at
https://osgeo-org.atlassian.net/projects/GEOS/summary with steps to
reproduce, styles and requests to use.
If you want to use your own dataset that's also fine, but you'll have to
attach a sample of that in the ticket too (and make sure
it's complete enough to reproduce the issue)
Cheers
Andrea
On Wed, Jul 11, 2018 at 9:39 AM, Németh László <[email protected]>
wrote:
> Hi Andrea,
>
> I really respect your quick and detailed answers, but i still feel that
> you do not get me right. We can cope with duplicates the problem i have no
> workaround for is that features are MISSING.
>
> Or do I misunderstand?
>
> BR,
> Laszlo
>
> Sent from my mobile
>
> On 2018. Jul 11., at 9:30, Andrea Aime <[email protected]>
> wrote:
>
> On Wed, Jul 11, 2018 at 12:01 AM, László Németh <[email protected]>
> wrote:
>
>> Hi Andrea,
>>
>> Thank you for your response but I am not sure if I explained it clearly.
>>
>
> You did, my answer is still valid (but I understand you not liking it ;-) )
>
>
>>
>> We reqest the same layers with two different styles in the same WMS
>> request (using layers and styles parameter, both comma separated).
>> Duplicates are OK, but I would expect to get a "union all” of the
>> features from both style filters, but we only get the features of the first
>> style but duplicated (features resulted by the second style in the list are
>> missing).
>>
>> So request LAYER=APPLE with STYLE=green results in one, green apple
>> feature, request LAYER=APPLE with STYLE=red results in one, red apple
>> feature
>> and request with LAYER=APPLE,APPLE and STYLE=green,red results in the
>> green apple feature twice. Is this the way it should work?
>>
>
> The WMS specification says nothing about how GetFeatureInfo should be
> implemented, it's completely freeform.
> In GeoServer the layers in the list are processed independently, there is
> no check for layer repetition or logic to avoid generating
> the same feature twice, for both simplicity and efficiency.
>
> In any case, in absence of a firm indication from the WMS spec arguing
> what would be the "correct" behavior is pointless,
> but even if we agreed it was a bug, it would not change the end result,
> the GPL license also states, among other things,
> "SHOULD THE PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF ALL NECESSARY
> SERVICING,
> REPAIR OR CORRECTION" (all open source licenses have a similar clause, but
> the GPL is particular direct in this respect).
> I know reading it can be tedious, but it's a good read anyways, for anyone
> that still hasn't had a look, here, it's good to know
> what you actually get alongside the free software:
> https://www.gnu.org/licenses/old-licenses/gpl-2.0.html
>
> As said, implementing the behavior you desire would be possible, but it's
> up to you to find the development resources to do so.
> It's not going to be a massive change, but not a completely trivial one
> either to get it done properly
> (e.g., considering for example layers without a stable feature identifier,
> rendering transformations making up features on the fly,
> changing the old featureinfo engine which can still be activated by a
> flag, and so on).
>
> Let me also offer two workarounds:
>
> - if you have control over the client the easiest thing would be to
> request FeatureInfo as GeoJSON and the remove the duplicates client side
> - if you have control over the server, you can build a single style
> generating the full response by putting the contents of the two existing
> styles as two consequent FeatureTypeStyle elements
>
> Hope this helps
>
> Cheers
> Andrea
>
> ==
>
> GeoServer Professional Services from the experts! Visit
> http://goo.gl/it488V for more information. == Ing. Andrea Aime @geowolf
> Technical Lead GeoSolutions S.A.S. Via di Montramito 3/A 55054 Massarosa
> (LU) phone: +39 0584 962313 fax: +39 0584 1660272 mob: +39 339 8844549
> http://www.geo-solutions.it http://twitter.com/geosolutions_it
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--
Regards, Andrea Aime == GeoServer Professional Services from the experts!
Visit http://goo.gl/it488V for more information. == Ing. Andrea Aime
@geowolf Technical Lead GeoSolutions S.A.S. Via di Montramito 3/A 55054
Massarosa (LU) phone: +39 0584 962313 fax: +39 0584 1660272 mob: +39 339
8844549 http://www.geo-solutions.it http://twitter.com/geosolutions_it
------------------------------------------------------- *Con riferimento
alla normativa sul trattamento dei dati personali (Reg. UE 2016/679 -
Regolamento generale sulla protezione dei dati “GDPR”), si precisa che ogni
circostanza inerente alla presente email (il suo contenuto, gli eventuali
allegati, etc.) è un dato la cui conoscenza è riservata al/i solo/i
destinatario/i indicati dallo scrivente. Se il messaggio Le è giunto per
errore, è tenuta/o a cancellarlo, ogni altra operazione è illecita. Le
sarei comunque grato se potesse darmene notizia. This email is intended
only for the person or entity to which it is addressed and may contain
information that is privileged, confidential or otherwise protected from
disclosure. We remind that - as provided by European Regulation 2016/679
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