[Geoserver-users] Geoserver, PostGIS, WFS query not using the spatial index.

GeoServer GeoServer User
1

Hi.

I have some problems with GeoServer (2.5.2) and PostGIS (2.1.1). When I make a WFS request to a view on my database, I get a SELECT query like this:

SELECT “id”,encode(ST_AsEWKB(“geometry”),‘base64’) as “geometry” FROM “public”.“my_table” WHERE “geometry” && ST_GeomFromText(‘POLYGON ((891837.6082013508 6147533.812230958, 891837.6082013508 6148331.277858112, 893164.795314311 6148331.277858112, 893164.795314311 6147533.812230958, 891837.6082013508 6147533.812230958))’, ST_SRID(“geometry”)) LIMIT 1000000

I have an INDEX on the geometry column but the above query won’t use it because of the ST_SRID(“geometry”) part (by replacing it with the declared EPSG code PostGIS uses the index).

I have declared an SRS but Geoserver hasn’t been able to define a Native SRS (the field is empty and got ‘…’ right next to it). Since I have declared an SRS I would expect it to be used directly in the query?

Can you give me a hint or two on where to look or what to change?

Regards, Casper

2

On Wed, Dec 17, 2014 at 9:01 AM, Casper Børgesen (CABO) <CABO@anonymised.com..>
wrote:

Hi.

I have some problems with GeoServer (2.5.2) and PostGIS (2.1.1). When I
make a WFS request to a view on my database, I get a SELECT query like this:

SELECT "id",encode(ST_AsEWKB("geometry"),'base64') as "geometry" FROM
"public"."my_table" WHERE "geometry" && ST_GeomFromText('POLYGON
((891837.6082013508 6147533.812230958, 891837.6082013508 6148331.277858112,
893164.795314311 6148331.277858112, 893164.795314311 6147533.812230958,
891837.6082013508 6147533.812230958))', ST_SRID("geometry")) LIMIT 1000000

GeoServer falls back on this syntax when the srid of the geometry is not
known.
Can you verify the geoserver user can access the geometry_columns view?

Cheers
Andrea

--

GeoServer Professional Services from the experts! Visit
http://goo.gl/NWWaa2 for more information.

Please, notice that GeoSolutions will be closed for seasonal holidays
from December the 24th to January the 6th

Ing. Andrea Aime
@geowolf
Technical Lead

GeoSolutions S.A.S.
Via Poggio alle Viti 1187
55054 Massarosa (LU)
Italy
phone: +39 0584 962313
fax: +39 0584 1660272
mob: +39 339 8844549

http://www.geo-solutions.it
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3

Hi Andrea

I can confirm that Geoserver NOW has access to the geometry_columns view and now it works.

But still, if I declare an SRS I would expect that SRS being specified in the query to the database?

Thanks for your answer!

Regards, Casper

···

On Wed, Dec 17, 2014 at 9:01 AM, Casper Børgesen (CABO) <CABO@…4891…> wrote:

Hi.

I have some problems with GeoServer (2.5.2) and PostGIS (2.1.1). When I make a WFS request to a view on my database, I get a SELECT query like this:

SELECT “id”,encode(ST_AsEWKB(“geometry”),‘base64’) as “geometry” FROM “public”.“my_table” WHERE “geometry” && ST_GeomFromText(‘POLYGON ((891837.6082013508 6147533.812230958, 891837.6082013508 6148331.277858112, 893164.795314311 6148331.277858112, 893164.795314311 6147533.812230958, 891837.6082013508 6147533.812230958))’, ST_SRID(“geometry”)) LIMIT 1000000

GeoServer falls back on this syntax when the srid of the geometry is not known.

Can you verify the geoserver user can access the geometry_columns view?

Cheers

Andrea

–

==

GeoServer Professional Services from the experts! Visit

http://goo.gl/NWWaa2 for more information.

Please, notice that GeoSolutions will be closed for seasonal holidays
from December the 24th to January the 6th

==

Ing. Andrea Aime

@geowolf

Technical Lead

GeoSolutions S.A.S.

Via Poggio alle Viti 1187

55054 Massarosa (LU)

Italy

phone: +39 0584 962313

fax: +39 0584 1660272

mob: +39 339 8844549

http://www.geo-solutions.it

http://twitter.com/geosolutions_it

AVVERTENZE AI SENSI DEL D.Lgs. 196/2003

Le informazioni contenute in questo messaggio di posta elettronica e/o nel/i file/s allegato/i sono da considerarsi strettamente riservate. Il loro utilizzo è consentito esclusivamente al destinatario del messaggio, per le finalità indicate nel messaggio stesso. Qualora riceviate questo messaggio senza esserne il destinatario, Vi preghiamo cortesemente di darcene notizia via e-mail e di procedere alla distruzione del messaggio stesso, cancellandolo dal Vostro sistema. Conservare il messaggio stesso, divulgarlo anche in parte, distribuirlo ad altri soggetti, copiarlo, od utilizzarlo per finalità diverse, costituisce comportamento contrario ai principi dettati dal D.Lgs. 196/2003.

The information in this message and/or attachments, is intended solely for the attention and use of the named addressee(s) and may be confidential or proprietary in nature or covered by the provisions of privacy act (Legislative Decree June, 30 2003, no.196 - Italy’s New Data Protection Code).Any use not in accord with its purpose, any disclosure, reproduction, copying, distribution, or either dissemination, either whole or partial, is strictly forbidden except previous formal approval of the named addressee(s). If you are not the intended recipient, please contact immediately the sender by telephone, fax or e-mail and delete the information in this message that has been received in error. The sender does not give any warranty or accept liability as the content, accuracy or completeness of sent messages and accepts no responsibility for changes made after they were sent or for other risks which arise as a result of e-mail transmission, viruses, etc.

4

On Wed, Dec 17, 2014 at 2:12 PM, Casper Børgesen (CABO) <CABO@anonymised.com..>
wrote:

Hi Andrea

I can confirm that Geoserver NOW has access to the geometry_columns view
and now it works.

But still, if I declare an SRS I would expect that SRS being specified in
the query to the database?

Eh no, it does not work that way, the srid can sometimes be wrong or
missing (zero) but in order
for the queries to work you have to use the native srid, not the declared
epsg code

Cheers
Andrea

--

GeoServer Professional Services from the experts! Visit
http://goo.gl/NWWaa2 for more information.

Please, notice that GeoSolutions will be closed for seasonal holidays
from December the 24th to January the 6th

Ing. Andrea Aime
@geowolf
Technical Lead

GeoSolutions S.A.S.
Via Poggio alle Viti 1187
55054 Massarosa (LU)
Italy
phone: +39 0584 962313
fax: +39 0584 1660272
mob: +39 339 8844549

http://www.geo-solutions.it
http://twitter.com/geosolutions_it

*AVVERTENZE AI SENSI DEL D.Lgs. 196/2003*

Le informazioni contenute in questo messaggio di posta elettronica e/o
nel/i file/s allegato/i sono da considerarsi strettamente riservate. Il
loro utilizzo è consentito esclusivamente al destinatario del messaggio,
per le finalità indicate nel messaggio stesso. Qualora riceviate questo
messaggio senza esserne il destinatario, Vi preghiamo cortesemente di
darcene notizia via e-mail e di procedere alla distruzione del messaggio
stesso, cancellandolo dal Vostro sistema. Conservare il messaggio stesso,
divulgarlo anche in parte, distribuirlo ad altri soggetti, copiarlo, od
utilizzarlo per finalità diverse, costituisce comportamento contrario ai
principi dettati dal D.Lgs. 196/2003.

The information in this message and/or attachments, is intended solely for
the attention and use of the named addressee(s) and may be confidential or
proprietary in nature or covered by the provisions of privacy act
(Legislative Decree June, 30 2003, no.196 - Italy's New Data Protection
Code).Any use not in accord with its purpose, any disclosure, reproduction,
copying, distribution, or either dissemination, either whole or partial, is
strictly forbidden except previous formal approval of the named
addressee(s). If you are not the intended recipient, please contact
immediately the sender by telephone, fax or e-mail and delete the
information in this message that has been received in error. The sender
does not give any warranty or accept liability as the content, accuracy or
completeness of sent messages and accepts no responsibility for changes
made after they were sent or for other risks which arise as a result of
e-mail transmission, viruses, etc.

-------------------------------------------------------