[mapserver-users] FILTER and multi STYLE tags

[Steve Lime]

You have to get a little more recent... Those changes didn't appear until
7.4.3. --Steve

On Fri, Jan 24, 2020 at 2:27 AM Kalbermatten Michaël <
Michael.Kalbermatten at ne.ch> wrote:

> Hi Steve,
>
>
>
> Thanks for the quick answer and sorry for my late reply.
>
>
>
> I downloaded the latest stable release which can be found on the
> gisinternals website. On the 17th January 2020, that would have been
> release-1900-x64-gdal-3-0-2-mapserver-7-4-2, which I think is the latest
> release. Should I try out a daily release ? or where the changes you are
> talking about already included in release 7.4.2?
>
>
>
> Michael
>
>
>
>
>
> > Hi Michaël: What version are you using? There were some fixes related to
>
> > rendering queries in the latest 7.4 release.
>
> >
>
> > —Steve
>
> >
>
> > On Friday, January 17, 2020, Kalbermatten Michaël <
>
> > Michael.Kalbermatten at ne.ch>> wrote:
>
> >
>
> >> Dear all,
>
> >>
>
> >>
>
> >>
>
> >> We have quite a strange filter behavior.
>
> >>
>
> >>
>
> >>
>
> >> We have a layer (relying on PostGIS data and  with multine geometries)
>
> >> containing several classes with some of them having multiple STYLE tags.
>
> >> Something like:
>
> >>
>
> >>
>
> >>
>
> >> CLASS
>
> >>
>
> >>     NAME "Ouvrages d'art"
>
> >>
>
> >>     EXPRESSION "Ouvrages d'art"
>
> >>
>
> >>     STYLE
>
> >>
>
> >>         COLOR 255 141 0
>
> >>
>
> >>         WIDTH 8
>
> >>
>
> >>         LINECAP butt
>
> >>
>
> >>     END
>
> >>
>
> >> END
>
> >>
>
> >> CLASS
>
> >>
>
> >>     NAME "OFROU"
>
> >>
>
> >>     EXPRESSION "OFROU"
>
> >>
>
> >>     STYLE
>
> >>
>
> >>         COLOR 255 0 0
>
> >>
>
> >>         WIDTH 8
>
> >>
>
> >>         LINECAP butt
>
> >>
>
> >>     END
>
> >>
>
> >>     STYLE
>
> >>
>
> >>         COLOR 255 141 0
>
> >>
>
> >>         WIDTH 2
>
> >>
>
> >>         LINECAP butt
>
> >>
>
> >>     END
>
> >>
>
> >> END
>
> >>
>
> >> CLASS
>
> >>
>
> >>     NAME "CFF"
>
> >>
>
> >>     EXPRESSION "CFF"
>
> >>
>
> >>     STYLE
>
> >>
>
> >>         COLOR 35 35 35
>
> >>
>
> >>         WIDTH 3
>
> >>
>
> >>         LINECAP butt
>
> >>
>
> >>     END
>
> >>
>
> >>     STYLE
>
> >>
>
> >>         COLOR 35 35 35
>
> >>
>
> >>         SYMBOL "barre"
>
> >>
>
> >>         SIZE 12
>
> >>
>
> >>         GAP -10
>
> >>
>
> >>     END
>
> >>
>
> >> END
>
> >>
>
> >>
>
> >>
>
> >> A WMS request on this layer will renderer all objects regarding their
>
> >> class, which is the expected behavior.
>
> >>
>
> >>
>
> >>
>
> >> Now, a FILTER tag is applied on this layer, a request which would look
>
> >> like:
>
> >>
>
> >>
>
> >>
>
> >> http://myserver.com/my_mapserver_cgi?SERVICE=WMS
>
> >>
>
> >> &VERSION=1.3.0
>
> >>
>
> >> &REQUEST=GetMap
>
> >>
>
> >> &FORMAT=image/png
>
> >>
>
> >> &TRANSPARENT=true
>
> >>
>
> >> &LAYERS=rt55_chantiers_futurs
>
> >>
>
> >> &STYLES=
>
> >>
>
> >> &FILTER=(<Filter xmlns="http://www.opengis.net/ogc
> ">><PropertyIsBetween>><
>
> >> PropertyName>>annee_debut</PropertyName>><LowerBoundary>><
>
> >> Literal>>2021</Literal>></LowerBoundary>><UpperBoundary>><
>
> >>
> Literal>>2021</Literal>></UpperBoundary>></PropertyIsBetween>></Filter>>)
>
> >>
>
> >> &CRS=EPSG:2056
>
> >>
>
> >> &WIDTH=1925
>
> >>
>
> >> &HEIGHT=936
>
> >>
>
> >> &BBOX=2503325,1194925,2599575,1222975
>
> >>
>
> >>
>
> >>
>
> >> (I removed the URL escaping and made it multiline for readability)
>
> >>
>
> >>
>
> >>
>
> >> This request generates something really strange. Returned features from
>
> >> the server are rendered until Mapserver encounters the first feature
> which
>
> >> corresponds to a class having more than one STYLE tag. All other
> features
>
> >> (coming next regarding the request sent to the PostGIS server) are not
>
> >> rendered any more. Mapserver does not trigger any error, nor does the
>
> >> database. In the mapserver logs:
>
> >>
>
> >>
>
> >>
>
> >> [Wed Jan 15 08:03:11 2020].640000 CGI Request 1 on process 4228
>
> >>
>
> >> [Wed Jan 15 08:03:11 2020].649000 FLTLayerApplyPlainFilterToLayer():
>
> >> ("[annee_debut]" ~* ".*2021.*"), rect=2503325,1194925,2599575,1222975
>
> >>
>
> >> [Wed Jan 15 08:03:11 2020].658000 msDrawMap(): rendering using
>
> >> outputformat named png (AGG/PNG).
>
> >>
>
> >> [Wed Jan 15 08:03:11 2020].658000 msDrawMap(): WMS/WFS set-up and query,
>
> >> 0.000s
>
> >>
>
> >> [Wed Jan 15 08:03:11 2020].658000 msDrawMap(): Layer 917
>
> >> (rt55_chantiers_futurs), 0.000s
>
> >>
>
> >> [Wed Jan 15 08:03:11 2020].658000 msDrawMap(): Drawing Label Cache,
> 0.000s
>
> >>
>
> >> [Wed Jan 15 08:03:11 2020].658000 msDrawMap() total time: 0.003s
>
> >>
>
> >> [Wed Jan 15 08:03:11 2020].709000 msSaveImage(stdout) total time: 0.051s
>
> >>
>
> >> [Wed Jan 15 08:03:11 2020].709000 mapserv request processing time
>
> >> (msLoadMap not incl.): 0.069s
>
> >>
>
> >> [Wed Jan 15 08:03:11 2020].709000 msFreeMap(): freeing map at
>
> >> 00000258E99A8030.
>
> >>
>
> >>
>
> >>
>
> >> After playing with the Mapfile and related data for a few hours, we
>
> >> discovered that because we analyzed  the following elements :
>
> >>
>
> >>
>
> >>
>
> >>     - The feature order in the database
>
> >>
>
> >>     - The STYLE tags in the mapfile classes: making all classes having
>
> >> only one STYLE tag
>
> >>
>
> >>
>
> >>
>
> >> Thus, if a use these classes:
>
> >>
>
> >>
>
> >>
>
> >> CLASS
>
> >>
>
> >>     NAME "Ouvrages d'art"
>
> >>
>
> >>     EXPRESSION "Ouvrages d'art"
>
> >>
>
> >>     STYLE
>
> >>
>
> >>         COLOR 255 141 0
>
> >>
>
> >>         WIDTH 8
>
> >>
>
> >>         LINECAP butt
>
> >>
>
> >>     END
>
> >>
>
> >> END
>
> >>
>
> >> CLASS
>
> >>
>
> >>     NAME "OFROU"
>
> >>
>
> >>     EXPRESSION "OFROU"
>
> >>
>
> >>     STYLE
>
> >>
>
> >>         COLOR 255 0 0
>
> >>
>
> >>         WIDTH 8
>
> >>
>
> >>         LINECAP butt
>
> >>
>
> >>     END
>
> >>
>
> >> END
>
> >>
>
> >> CLASS
>
> >>
>
> >>     NAME "CFF"
>
> >>
>
> >>     EXPRESSION "CFF"
>
> >>
>
> >>     STYLE
>
> >>
>
> >>         COLOR 35 35 35
>
> >>
>
> >>         WIDTH 3
>
> >>
>
> >>         LINECAP butt
>
> >>
>
> >>     END
>
> >>
>
> >> END
>
> >>
>
> >>
>
> >>
>
> >> Then everything works as expected (using a filter tag in the request),
> and
>
> >> all features are rendered by Mapserver.
>
> >>
>
> >>
>
> >>
>
> >> Moreover it is not a DB issue, because if you send a WFS request using
>
> >> exactly the same layer definition and the same filter to Mapserver, then
>
> >> everything is working as expected (all expected features are returned).
>
> >>
>
> >>
>
> >>
>
> >> This really looks like some kind of rendering issue combined to
> filtering.
>
> >>
>
> >>
>
> >>
>
> >> Any hints or thoughts on that ?
>
> >>
>
> >>
>
> >>
>
> >> Best regards
>
> >>
>
> >>
>
> >>
>
> >> Michael
>
> >>
>
> >>
>
>
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