[mapserver-users] runtime CONNECTION string partial substitution

[thomas bonfort]

Not sure I get it. Your regex requires a letter or a dash , and one of them
is present, no?
On May 16, 2016 2:28 PM, "Rahkonen Jukka (MML)" <
jukka.rahkonen at maanmittauslaitos.fi> wrote:

> Hi Thomas,
>
>
>
> I was testing with http://www.regexr.com/ and it does not agree totally:
>
>
>
> “wms-wfs” contains a dash and the test utility requires “[a-z-]+”
>
> WMS-WFS has capital letters and dash and test utility requires “[A-Z-]+”
>
>
>
> -Jukka-
>
>
>
>
>
> *Lähettäjä:* thomas bonfort [mailto:thomas.bonfort at gmail.com]
> *Lähetetty:* 16. toukokuuta 2016 15:11
> *Vastaanottaja:* Rahkonen Jukka (MML)
> *Kopio:* MapserverList OSGEO; G. Allegri
> *Aihe:* Re: [mapserver-users] runtime CONNECTION string partial
> substitution
>
>
>
>
> On May 16, 2016 2:02 PM, "Rahkonen Jukka (MML)" <
> jukka.rahkonen at maanmittauslaitos.fi> wrote:
> >
> > Correction:
> >
> >
> >
> > Changing the WMS online resource does work if the mapfile is written
> correctly. I had to add VALIDATION also into MAP->WEB
> >
> >
> >
> > WEB
> >
> >     METADATA
> >
> > "wms_onlineresource" "http://localhost:8060/cgi-bin/mapserv.exe?map=c
> :\ms4w\apps\wms-wfs.map&db=%db%"
> >
> >     END #metadata
> >
> >      VALIDATION
> >
> >              "db" "[a-z]+"
> >
> >     END #validation
> >
> > END #WEB
> >
> >
> >
> > Now I can send
> >
> http://localhost:8060/cgi-bin/mapserv.exe?map=c:/ms4w/apps/wms-wfs.map&service=wms&version=1.3.0&request=getcapabilities&db=wms-wfs
> >
> >
> >
> > and get
> > <OnlineResource xlink:href="
> http://localhost:8060/cgi-bin/mapserv.exe?map=c
> :\ms4w\apps\wms-wfs.map&db=wms-wfs&"/>
> >
> >
> >
> > What is interesting is that the validation rule “[a-z]+” should not
> accept the name of my db “wms-wfs” but it does. Capital letters are
> accepted as well “WMS-WFS”. Because I am on Windows I can even get data
> with WMS-WFS though the name of the db is “wms-wfs.sqlite”.
> >
> That's because [a-z]+ means "there should be at least one alphabetic
> character in the passed expression". The " correct" regex to use would be
> ^[a-z]+$
>
> Thomas
> >
> >
> > -Jukka Rahkonen-
> >
> >
> >
> >
> >
> > Lähettäjä: Rahkonen Jukka (MML)
> > Lähetetty: 16. toukokuuta 2016 14:24
> > Vastaanottaja: 'G. Allegri'; mapserver-users at lists.osgeo.org
> > Aihe: Re: [mapserver-users] runtime CONNECTION string partial
> substitution
> >
> >
> >
> > Hi,
> >
> >
> >
> > I made a test with your VALIDATION and CONNECTION and changing  db
> on-the-fly works. How did you test?  If you use some WMS client for testing
> it is good to remember that variable substitution does not have an effect
> on the GetCapabilities document so that the GetMap URL would be updated
> automatically. Therefore WMS clients like QGIS or OpenJUMP will drop the
> &db= parameter from the GetMaps if you do not tell them not to trust the
> advertised GetMap URL.
> >
> >
> >
> > According to documentation http://mapserver.org/cgi/runsub.html  it
> should also be possible to use variable substitution also in MAP- WEB:
> METADATA. I tried
> >
> > to use
> >
> > "wms_onlineresource" “http://localhost:8060/cgi-bin/mapserv.exe?map=c
> :\ms4w\apps\wms-wfs.map&%db%”
> >
> >
> >
> > but GetCapabilities response contains the variable %db% literally
> >
> > <OnlineResource xlink:href="
> http://localhost:8060/cgi-bin/mapserv.exe?map=c
> :\ms4w\apps\wms-wfs.map&%db%&"/>
> >
> >
> >
> > It seems that for getting a proper error message when &db= is missing or
> it is wrong a WMS GetMap request is required. WFS GetFeature triggers the
> error
> >
> > and is easier to write by hand, for example:
> >
> >
> http://localhost:8060/cgi-bin/mapserv.exe?map=c:/ms4w/apps/wms-wfs.map&service=wfs&version=2.0.0&request=getfeature&typename=states&db=foo
> >
> > sends an error
> >
> > <ows:ExceptionText>
> >
> > msOGRFileOpen(): OGR error. Open failed for OGR connection in layer
> `states'.  File not found or unsupported format.
> >
> > </ows:ExceptionText>
> >
> >
> >
> > Document http://www.mapserver.org/optimization/debugging.html contains
> good advice for debugging.
> >
> >
> >
> > -Jukka Rahkonen-
> >
> >
> >
> >
> >
> > G. Allegri wrote:
> >
> >
> >
> > Hello,
> >
> > I'm trying to define a layer where the Sqlite DB connection should be
> set dynamically through runtime sustitution.
> >
> >
> >
> > e.g.
> >
> >
> >
> > LAYER
> >
> >     NAME mylayer
> >
> >     TYPE POINT
> >
> >     CONNECTIONTYPE OGR
> >
> >     VALIDATION
> >
> >         "db" "[a-z]+"
> >
> >     END
> >
> >     CONNECTION "/var/www/dbs/%db%.sqlite"
> >
> >     DATA "mytable"
> >
> > END
> >
> >
> >
> > The point layers works fine if  %db% is set statically but if I try to
> define it through get query values nothing is returned:
> >
> >
> >
> > http://localhost/cgi-bin/mapserv?map=mymapfile.map&db=mydb
> >
> >
> >
> > The documentation says that runtime sustitution should work for
> CONNECTION param too. What am I doing wrong?
> >
> >
> >
> > Thanks,
> >
> > Giovanni
> >
> >
> >
> > --
> >
> > Giovanni Allegri
> > http://about.me/giovanniallegri
> >
> > Gis3W - http://gis3w.it
> >
> > Ikare - http://ikare.it
> >
> > Twitter: https://twitter.com/_giohappy_
> >
> > blog: http://blog.spaziogis.it
> > GEO+ geomatica in Italia http://bit.ly/GEOplus
> >
> >
> > _______________________________________________
> > mapserver-users mailing list
> > mapserver-users at lists.osgeo.org
> > http://lists.osgeo.org/mailman/listinfo/mapserver-users
>
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