WFS GetFeature and GML data issue

[Yewondwossen Assefa]

Tom,

  Sorry for the late answer. My gut feeling is that the warning in the
doc should be enough for the majority of cases. I think though that a
specific bug should entered decribing this so It might be addresses
somehow in the future.

Later,



Kralidis,Tom [Burlington] wrote:
> Any other comments here?  Should we things be as they are and put a
> warning in the docs?  Or do we want to think about a more elaborate way
> to handle this?
>
> ..Tom
>
>
>
>>-----Original Message-----
>>From: Paul Ramsey [mailto:pramsey at refractions.net]
>>Sent: Wednesday, 16 March, 2005 16:46
>>To: Kralidis,Tom [Burlington]
>>Cc: MAPSERVER-DEV at LISTS.UMN.EDU
>>Subject: Re: [UMN_MAPSERVER-DEV] WFS GetFeature and GML data issue
>>
>>
>>Hooray for the bounding box, our cruel task master! Let no query go
>>unbounded, and let the masses gnash their teeth, and quake in fear!
>>
>>:)
>>P
>>
>>Kralidis,Tom [Burlington] wrote:
>>
>>
>>>Hi,
>>>
>>>After offline email with Frank (thanks Frank!), it seems
>>
>>that this has
>>
>>>to do with  the fact that my GML document bounding box of
>>
>>the data is
>>
>>>outside of MAP/EXTENT in the mapfile.  If I change my MAP/EXTENT to
>>>-180 -90 180 90, I indeed get all the data back.
>>>
>>>I guess the question is the behaviour of MAP/EXTENT for a
>>
>>WFS, and if
>>
>>>a LAYER has extents outside the bounds of MAP/EXTENT, what happens
>>>when a client makes a blanket request and expects all the
>>
>>data?  Mind
>>
>>>you if LAYER extents are larger than MAP/EXTENT, this
>>
>>should trigger
>>
>>>the mapfile creator to think about whether they've applied
>>
>>the right
>>
>>>MAP/EXTENT.  On the other hand, how does MAP/EXTENT, something that
>>>historically applies to the default extent of a mapping app for
>>>MapServer CGI, apply to OWS approaches?
>>>
>>>At the very least (as Frank suggests) the WFS server howto
>>
>>should warn
>>
>>>about this.  I would post a doc bug for this but not until there is
>>>consensus that the way things behave now are the way they should.
>>>
>>>Comments?
>>>
>>>..Tom
>>>
>>>
>>>
>>>
>>>>-----Original Message-----
>>>>From: Frank Warmerdam [mailto:fwarmerdam at gmail.com]
>>>>Sent: Wednesday, 16 March, 2005 15:20
>>>>To: Kralidis,Tom [Burlington]
>>>>Cc: MAPSERVER-DEV at lists.umn.edu
>>>>Subject: Re: [UMN_MAPSERVER-DEV] WFS GetFeature and GML data issue
>>>>
>>>>
>>>>On Wed, 16 Mar 2005 15:15:02 -0500, Kralidis,Tom [Burlington]
>>>><Tom.Kralidis at ec.gc.ca> wrote:
>>>>
>>>>
>>>>>Hi,
>>>>>
>>>>>I have a LAYER defined with a GML document as the native
>>>>
>>>>data type.
>>>>
>>>>
>>>>>The GML document has 21 features.
>>>>>
>>>>>When I run a WFS GetFeature against the entire dataset:
>>>>>
>>>>>
>>>>
>>>>http://devgeo.cciw.ca/cgi-bin/mapserv/ecows?version=1.0.0&se
>
> rvice=WFS&
>
>>>>re
>>>>quest=GetFeature&typename=neis&
>>>>
>>>>...I expect to have returned 21 features.  However the
>>>
>>>response only
>>>
>>>
>>>>returns 4.
>>>
>>>Tom,
>>>
>>>How does this file look to ogrinfo?  Can you post this GML
>>>file for me to inspect?
>>>
>>>Best regards,
>>>--
>>>---------------------------------------+----------------------
>>>----------
>>>---------------------------------------+------
>>>I set the clouds in motion - turn up   | Frank Warmerdam,
>>>warmerdam at pobox.com
>>>light and sound - activate the windows | http://pobox.com/~warmerdam
>>>and watch the world go round - Rush    | Geospatial
>>>Programmer for Rent
>>
>>
>
>

--
----------------------------------------------------------------
Assefa Yewondwossen
Software Analyst

Email: assefa at dmsolutions.ca
http://www.dmsolutions.ca/

Phone: (613) 565-5056 (ext 14)
Fax:   (613) 565-0925
----------------------------------------------------------------