Thanks, Julian!
Your comments helped a lot. With this, the problem is reduced to the
&BBOX not working in WFS 2.0.0. I went back to OGC documentation and
started out with a query from the documentation - and it works. It turns
out that the problem is &BBOX in combination with
&outputFormat=application/json. Either on its own works fine and as
expected. Both combined in the query result in a java runtime exception
"Unable to evaluate template path against the template".
Henning
On 2024-01-26 14:00, Julian Hollingbery wrote:
Page Title
Hi,
You are mixing parameters between different versions of OGC protocols,
and this is causing at least some of your issues.
* &maxfeatures is a WFS version 1.x parameter. It should not do
anything in a WMS request. For WFS 2.0.0, the corresponding
parameter is called &count.
* &filter is technically only a WFS-parameter, so for it to work in
WMS is a non-standard feature in GeoServer.
/Julian
*From:*Henning Lorenz <henning.lor...@geo.uu.se>
*Sent:* Thursday, 25 January 2024 11.16
*To:* geoserver-users@lists.sourceforge.net
*Subject:* [Geoserver-users] Features-templating and OGC services,
filters not working, errors
Geoserver 2.24 and 2.21 snapshot with module app-schema and community
modules features templating, ogcapi-features (all from same build date)
Hello,
I have set up a seemingly functional layer with features templating.
However, I encounter a rather odd behaviour when I try to include
filters in the query URLs. Here is a summary (I paste examples below):
WMS 1.3 requests: Simple GetMap request works. &maxFeatures works.
CQL-filters do not work. OGC-filters on attributes work. Spatial
OGC-filter returns an empty map.
WFS 2.0.0 query: Simple Get Feature query works. &maxFeatures has no
effect. &bbox returns an error. CQL filters do not work. OGC-filters
on attributes work. Spatial OGC-filter returns error.
No spatial filtering at all, no CQL filters, only OGC filters on
attributes work. This limits the usefulness of WMS, and WFS is almost
completely useless. I guess that something is wrong, but do not even
know where to start looking for the problem, assuming that there is a
common underlying problem. The log entries are very peculiar - not
much with CQL-filter errors. On the other hand, extensive warnings
that the OGC-filter - which actually works - could not be parsed.
java.lang.RuntimeException on the spatial filter errors
(java.lang.NullPointerException on OGC filter; Unable to evaluate
template path against the template on bbox).
The main issue is that spatial filtering is not working (either no
effect or returns error) while all features are displayed in the
correct locations in a basic WMS map. Very peculiar is also that basic
limitations like maxFeatures do not work, as it has nothing to do with
the actual content. Any ideas on how to proceed with troubleshooting
are very much appreciated.
Thank you and best wishes,
Henning
---------------
Below the tested queries with short comments:
WMS 1.3:
Requesting a map without any additional parameters works as expected:
http://localhost:8080/geoserver/eposgo/wms?service=WMS&version=1.3.0&request=GetMap&layers=eposgo:MagnetotelluricStationsFeature&bbox=62,21,65,26&width=700&height=600&srs=EPSG:4326&format=image/jpeg
<http://localhost:8080/geoserver/eposgo/wms?service=WMS&version=1.3.0&request=GetMap&layers=eposgo:MagnetotelluricStationsFeature&bbox=62,21,65,26&width=700&height=600&srs=EPSG:4326&format=image/jpeg>
maxFeatures works:
http://localhost:8080/geoserver/eposgo/wms?service=WMS&version=1.3.0&request=GetMap&layers=eposgo:MagnetotelluricStationsFeature&maxFeatures=5&bbox=62,21,65,26&width=700&height=600&srs=EPSG:4326&format=image/jpeg
<http://localhost:8080/geoserver/eposgo/wms?service=WMS&version=1.3.0&request=GetMap&layers=eposgo:MagnetotelluricStationsFeature&maxFeatures=5&bbox=62,21,65,26&width=700&height=600&srs=EPSG:4326&format=image/jpeg>
CQL-filter on an attribute does not work (displays map with all
features, unfiltered, as without filter):
http://localhost:8080/geoserver/eposgo/wms?service=WMS&version=1.3.0&request=GetMap&layers=eposgo:MagnetotelluricStationsFeature&bbox=62,21,65,26&width=700&height=600&srs=EPSG:4326&CQL-FILTER=surveyname='1998'&format=image/jpeg
<http://localhost:8080/geoserver/eposgo/wms?service=WMS&version=1.3.0&request=GetMap&layers=eposgo:MagnetotelluricStationsFeature&bbox=62,21,65,26&width=700&height=600&srs=EPSG:4326&CQL-FILTER=surveyname='1998'&format=image/jpeg>
OGC-filter on an attribute works as expected:
http://localhost:8080/geoserver/eposgo/wms?service=WMS&version=1.3.0&request=GetMap&layers=eposgo:MagnetotelluricStationsFeature&bbox=62,21,65,26&width=700&height=600&srs=EPSG:4326&FILTER=
<http://localhost:8080/geoserver/eposgo/wms?service=WMS&version=1.3.0&request=GetMap&layers=eposgo:MagnetotelluricStationsFeature&bbox=62,21,65,26&width=700&height=600&srs=EPSG:4326&FILTER=><Filter
xmlns="http://www.opengis.net/ogc"; <http://www.opengis.net/ogc>
xmlns:gml="http://www.opengis.net/gml";
<http://www.opengis.net/gml>><PropertyIsEqualTo><PropertyName>surveyname</PropertyName><Literal>1998</Literal></PropertyIsEqualTo></Filter>&format=image/jpeg
OGC spatial filter returns empty map (tested with both latlon and
lonlat, as the order of coordinates in different formats/standards
(and their combination) always appears to be a mess to me)
http://localhost:8080/geoserver/eposgo/wms?service=WMS&version=1.3.0&request=GetMap&layers=eposgo:MagnetotelluricStationsFeature&bbox=62,21,65,26&width=700&height=600&srs=EPSG:4326&FILTER=
<http://localhost:8080/geoserver/eposgo/wms?service=WMS&version=1.3.0&request=GetMap&layers=eposgo:MagnetotelluricStationsFeature&bbox=62,21,65,26&width=700&height=600&srs=EPSG:4326&FILTER=><Filter
xmlns="http://www.opengis.net/ogc"; <http://www.opengis.net/ogc>
xmlns:gml="http://www.opengis.net/gml";
<http://www.opengis.net/gml>><Contains><PropertyName>geometry</PropertyName><gml:Polygon><gml:exterior><gml:LinearRing><gml:posList>24
62 26 62 26 65 24 65 24
62</gml:posList></gml:LinearRing></gml:exterior></gml:Polygon></Contains></Filter>&format=image/jpeg
http://localhost:8080/geoserver/eposgo/wms?service=WMS&version=1.3.0&request=GetMap&layers=eposgo:MagnetotelluricStationsFeature&bbox=62,21,65,26&width=700&height=600&srs=EPSG:4326&FILTER=
<http://localhost:8080/geoserver/eposgo/wms?service=WMS&version=1.3.0&request=GetMap&layers=eposgo:MagnetotelluricStationsFeature&bbox=62,21,65,26&width=700&height=600&srs=EPSG:4326&FILTER=><Filter
xmlns="http://www.opengis.net/ogc"; <http://www.opengis.net/ogc>
xmlns:gml="http://www.opengis.net/gml";
<http://www.opengis.net/gml>><Contains><PropertyName>geometry</PropertyName><gml:Polygon><gml:exterior><gml:LinearRing><gml:posList>62
24 62 26 65 26 65 24 62
24</gml:posList></gml:LinearRing></gml:exterior></gml:Polygon></Contains></Filter>&format=image/jpeg
WFS 2.0:
Query for all features works as expected:
localhost:8080/geoserver/eposgo/ows?service=WFS&version=2.0.0&request=GetFeature&typeName=eposgo:MagnetotelluricStationsFeature&outputFormat=application/json
maxFeatures does not work, the query returns all features:
localhost:8080/geoserver/eposgo/ows?service=WFS&version=2.0.0&request=GetFeature&typeName=eposgo:MagnetotelluricStationsFeature&maxFeatures=10&outputFormat=application/json
Filtering the query by an inline bbox results in an <ows:Exception
exceptionCode="NoApplicableCode"></ows:Exception> (from Geoserver log:
"java.lang.RuntimeException: Unable to evaluate template path against
the template"):
localhost:8080/geoserver/eposgo/ows?service=WFS&version=2.0.0&request=GetFeature&typeName=eposgo:MagnetotelluricStationsFeature&BBOX=62,21,65,26,EPSG:4326&outputFormat=application/json
Spatial filtering the query by a CQL-BBOX does not work, it returns
all features:
localhost:8080/geoserver/eposgo/ows?service=WFS&version=2.0.0&request=GetFeature&typeName=eposgo:MagnetotelluricStationsFeature&CQL-FILTER=BBOX(62,21,65,26)&outputFormat=application/json
Spatial filtering the query with an OGC BOX or Contains returns
<ows:Exception exceptionCode="NoApplicableCode"></ows:Exception>
(java.lang.NullPointerException):
localhost:8080/geoserver/eposgo/ows?service=WFS&version=2.0.0&request=GetFeature&typeName=eposgo:MagnetotelluricStationsFeature&FILTER=<Filter
xmlns="http://www.opengis.net/ogc"; <http://www.opengis.net/ogc>
xmlns:gml="http://www.opengis.net/gml";
<http://www.opengis.net/gml>><BBOX><PropertyName>geometry</PropertyName><gml:coord><gml:X>21</gml:X><gml:Y>62</gml:Y></gml:coord><gml:coord><gml:X>26</gml:X><gml:Y>65</gml:Y></gml:coord></gml:Box></BBOX></Filter>&outputFormat=application/json
localhost:8080/geoserver/eposgo/ows?service=WFS&version=2.0.0&request=GetFeature&typeName=eposgo:MagnetotelluricStationsFeature&FILTER=<Filter
xmlns="http://www.opengis.net/ogc"; <http://www.opengis.net/ogc>
xmlns:gml="http://www.opengis.net/gml";
<http://www.opengis.net/gml>><Contains><PropertyName>geometry</PropertyName><gml:Polygon><gml:exterior><gml:LinearRing><gml:posList>21
62 26 62 26 65 21 65 21
62</gml:posList></gml:LinearRing></gml:exterior></gml:Polygon></Contains></Filter>&outputFormat=application/json
CQL-Filter on an attribute does not work, it returns all features:
localhost:8080/geoserver/eposgo/ows?service=WFS&version=2.0.0&request=GetFeature&typeName=eposgo:MagnetotelluricStationsFeature&CQL-FILTER=surveyname='1998'&outputFormat=application/json
OGC-filter on an attribute works as expected:
localhost:8080/geoserver/eposgo/ows?service=WFS&version=2.0.0&request=GetFeature&typeName=eposgo:MagnetotelluricStationsFeature&FILTER=<Filter
xmlns="http://www.opengis.net/ogc"; <http://www.opengis.net/ogc>
xmlns:gml="http://www.opengis.net/gml";
<http://www.opengis.net/gml>><PropertyIsEqualTo><PropertyName>surveyname</PropertyName><Literal>1998</Literal></PropertyIsEqualTo></Filter>&outputFormat=application/json
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--
Henning Lorenz
EPOS-Sweden (Swedish participation in EPOS-ERIC;www.epos-se.se), infrastructure
manager
Riksriggen data management and support (www.riksriggen.se)
The Swedish Scientific Drilling Program (www.ssdp.se)
Uppsala University
Department of Earth Sciences
Villavägen 16
752 36 Uppsala
Sweden
mobile: +46 (0) 701 679 320
e-mail:henning.lor...@geo.uu.se
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