[mapguide-users] Urgent !!!! - Cannot Create any more connections to FDO provider

[Pascal Coulon]

Hi there,

I have the same problem. I have implemented a real time application which
update feature attributes every 30 seconds. After 20 iterations, the systen
hangs and then I get the same error Cannot Create any more connections to
FDO provider. Any help would much appreciated. I have very similar code to
Mark's one. 

regards,


Mark Pendergraft wrote:
> 
> Okay, 
> 
>  
> 
> I have a feature source, which contains quarters of sections.. I have
> written a program to create multipolygons of the quarter polygons and
> add the data from the individual polygons.
> 
>  
> 
> It works fine, except when I set it to iterate through the entire set.
> Inside a loop I set the feature reader to the selection
> 
> Get the features, run a function to convert them to a multipolygon
> 
> Then dispose of the featureReader, then change my filter, then repeat
> the loop
> 
>  
> 
> I get through about 40 iterations before I crash and get the message
> "Cannot Create any more Connections to OSGeo.SDF  FDO provider"
> 
>  
> 
>  
> 
> My question is.... What is creating the FDO connection?  I thought it
> was when I create the FeatureReader... but since I'm closing and
> disposing each time, I'm no longer sure.  What can I do in order to make
> my site loop through several thousand iterations (many of which will be
> empty) read the resulting features and write them to new features?
> 
>  
> 
> My loop looks like this:
> 
>  
> 
> Do While rngI < 3
> 
>         
> 
>            
> 
>             filter = IncrementSecTwnRng(secI, twnI, rngI)
> 
>            
> 
>             queryOpt.SetFilter(filter)
> 
>             fr = featureService.SelectFeatures(New
> MgResourceIdentifier(lay.GetFeatureSourceId), lay.GetFeatureClassName,
> queryOpt)
> 
>  
> 
>             propertyCollection = CreateMultiPolygon(fr,
> lay.GetFeatureGeometryName)
> 
>             
> 
>             If Not propertyCollection Is Nothing Then
> 
>                 batchPropertyCollection.Add(propertyCollection)
> 
>                 
> 
>             End If
> 
>             
> 
>             fr.Close()
> 
>             fr.Dispose()
> 
>             
> 
>             
> 
>         Loop
> 
>  
> 
> Thanks for the help!
> 
>  
> 
> -Mark Pendergraft
> 
>  
> 
>  
> 
> Ph: (425) 486-1252  Fx: (425) 486-6108  www.meadgilman.com
> <http://www.meadgilman.com/> 
> 
>  
> 
> 
>  
> _______________________________________________
> mapguide-users mailing list
> mapguide-users at lists.osgeo.org
> http://lists.osgeo.org/mailman/listinfo/mapguide-users
> 
> 

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