[mapserver-users] MapServer v. 4.10.0 featureid problem

Brian Mixon mixon at waterstoneinc.com
Fri Apr 18 12:43:20 EDT 2008 

Tom,

Perhaps I should tell you why I'm after the (or any) unique AND
sequential id field for a service's features. I'm trying to page the
feature data in a UI and started designing my solution after having read
the WFS v 1.0.0 spec. I assumed (yes, I know what happens when one does
that (;>)) that I'd just use feature ids. 

I should have asked what mechanism MapServer employs to allow me to do
something like this (the partial retrieval of features from a large
dataset on some service somewhere). I'm going to bring back a certain
number of features with each call to a WFS and as the user scrolls
through this data I will make subsequent calls to the same service and
ask for the next batch of features.

Does this make sense and can you point me in the right direction for
getting MapServer to do this?

Thanks for your patience,
Brian

-----Original Message-----
From: mapserver-users-bounces at lists.osgeo.org
[mailto:mapserver-users-bounces at lists.osgeo.org] On Behalf Of
Kralidis,Tom [Burlington]
Sent: Friday, April 18, 2008 5:36 AM
To: Delfos, Jacob; mapserver-users at lists.osgeo.org
Cc: Brenton Wonders; Russell Huff
Subject: RE: [mapserver-users] MapServer v. 4.10.0 featureid problem


Jacob is bang on (I'm no expert on ArcGIS :)

If I invoke a tool like ogrinfo on the shapefile, I see no attribute
called "FID".  I do see "ID" and "DISTRICT" attributes.

Try setting "gml_featureid" "ID" in your mapfile, which should pick up
the field and process accordingly.

..Tom


> -----Original Message-----
> From: mapserver-users-bounces at lists.osgeo.org
> [mailto:mapserver-users-bounces at lists.osgeo.org] On Behalf Of Delfos, 
> Jacob
> Sent: 17 April, 2008 11:55 PM
> To: mapserver-users at lists.osgeo.org
> Cc: Brenton Wonders; Russell Huff
> Subject: RE: [mapserver-users] MapServer v. 4.10.0 featureid problem
> 
> 
> Hi Guys,
> 
> I'm no expert on WFS, but I do know ArcGIS.
> The FID field is not really an attribute. It is more like an internal 
> ESRI unique row ID (which gets updated after edits to be sequential). 
> If you open up the attributes in another application (if you use 
> shapefiles, open up the DBF in OpenOffice Calc or Excel), then you 
> will find there is no FID field. Within ArcGIS, however, the FID field

> is presented as if it were a normal attribute.
> 
> Hope this helps,
> 
> Jacob
> 
>  
> 
> > -----Original Message-----
> > From: mapserver-users-bounces at lists.osgeo.org
> > [mailto:mapserver-users-bounces at lists.osgeo.org] On Behalf Of Brian 
> > Mixon
> > Sent: 18 April 2008 01:34
> > To: Kralidis,Tom [Burlington]; mapserver-users at lists.osgeo.org
> > Cc: Brenton Wonders; Russell Huff
> > Subject: RE: [mapserver-users] MapServer v. 4.10.0 featureid problem
> > 
> > Tom,
> > 
> > As soon as the Brenton on this list gets in to work we'll
> try to put
> > something together for you. I'm working remotely and need his GIS 
> > knowledge to get something for you.
> > 
> > Brian
> > 
> > -----Original Message-----
> > From: Kralidis,Tom [Burlington] [mailto:Tom.Kralidis at ec.gc.ca]
> > Sent: Thursday, April 17, 2008 10:51 AM
> > To: Brian Mixon; mapserver-users at lists.osgeo.org
> > Cc: Brenton Wonders; Russell Huff
> > Subject: RE: [mapserver-users] MapServer v. 4.10.0 featureid problem
> > 
> > 
> > Hi Brian,
> > 
> > What's your underlying data?  If there's anyway you can package a 
> > small testcase, I can do a local test.
> > 
> > ..Tom
> >  
> > 
> > > -----Original Message-----
> > > From: Brian Mixon [mailto:mixon at waterstoneinc.com]
> > > Sent: 17 April, 2008 12:24 PM
> > > To: Kralidis,Tom [Burlington]; mapserver-users at lists.osgeo.org
> > > Cc: Brenton Wonders; Russell Huff
> > > Subject: RE: [mapserver-users] MapServer v. 4.10.0
> featureid problem
> > > 
> > > Hi Tom,
> > > 
> > > Yes, it does. It's an Arc field that is present in all our data.
> > > 
> > > Thanks,
> > > Brian
> > > 
> > > -----Original Message-----
> > > From: Kralidis,Tom [Burlington] [mailto:Tom.Kralidis at ec.gc.ca]
> > > Sent: Thursday, April 17, 2008 10:11 AM
> > > To: Brian Mixon; mapserver-users at lists.osgeo.org
> > > Cc: Brenton Wonders; Russell Huff
> > > Subject: RE: [mapserver-users] MapServer v. 4.10.0
> featureid problem
> > > 
> > >  
> > > Does the column/field "fid" exist in your data?
> > > 
> > > ..Tom
> > > 
> > > 
> > > 
> > > ________________________________
> > > 
> > > 	From: mapserver-users-bounces at lists.osgeo.org
> > > [mailto:mapserver-users-bounces at lists.osgeo.org] On
> Behalf Of Brian
> > > Mixon
> > > 	Sent: 17 April, 2008 11:51 AM
> > > 	To: mapserver-users at lists.osgeo.org
> > > 	Cc: Brenton Wonders; Russell Huff
> > > 	Subject: [mapserver-users] MapServer v. 4.10.0 featureid problem
> > > 	
> > > 	
> > > 	Hello,
> > > 	 
> > > 	I'm a MapServer newbie and am having trouble with a WFS v. 1.0.0
> > 
> > > request. I'm trying to have all the features for a
> particular layer
> > > returned (which happens successfully) with the fid (feature id) 
> > > included as well (does not happen). I've included the
> gml_featureid
> > > 'fid' tag in the layer's metadata section of the mapfile but only 
> > > receive the
> > > following warning the the xml/gml response:    <!--  WARNING: 
> > > FeatureId
> > > item 'fid' not found in typename 'senate_districts'.   -->
> > > 	 
> > > 	I've searched and read the various tickets that claim this
> > problem is
> > > fixed so I'm wondering what I'm doing wrong?
> > > 	 
> > > 	Any information to point me in the right direction would be
> > greatly
> > > appreciated.
> > > 	 
> > > 	Regards,
> > > 	Brian Mixon
> > > 
> > > 
> > > 
> > > 
> > 
> > 
> > _______________________________________________
> > mapserver-users mailing list
> > mapserver-users at lists.osgeo.org
> > http://lists.osgeo.org/mailman/listinfo/mapserver-users
> > 
> > 
> 
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