[mapguide-internals] OGR Provider and infinite loop

Kenneth, GEOGRAF A/S ks at geograf.dk
Mon Nov 12 04:05:56 EST 2007


I have now created a ticket for the problem, and attached files required 
to produce a minimal setup:
http://trac.osgeo.org/mapguide/ticket/305

Regards, Kenneth, GEOGRAF A/S



Kenneth, GEOGRAF A/S skrev:
> I have not filed a ticket, I was hoping to fix it myself.
>
> The request completes fine in the OGR Provider, but is then re-called 
> infinitely and returns the selected feature each time.
> I can see the calls being made, and for each call to ReadNext it 
> returns the feature, then null, then the feature, ... and so on.
>
> I can see that the request being made is the "GetFeatures" operation, 
> but due to the package passing, I cannot find out where it originates 
> from.
>
> I have traced the "SELECTFEATURES" operation and it also completes, 
> but right before it sends the result, I get the infinite loop.
> Again, I cannot see where it fails.
> If the provider is SDF, there is not even a single "GetFeatures" 
> operation after the SELECTFEATURES (which is how I belive it should be).
>
> I can provide a single MapInfo TAB file, a featuresource and a 
> querystring that produces the error every time on the current SVN head 
> (and older).
>
> Regards, Kenneth, GEOGRAF A/S
>
>
>
> Traian Stanev skrev:
>> It's probably a server issue, if the request to the provider 
>> completes fine. I am mystified as to why exactly this happens, if I 
>> have a spare cycle, I might take a look. Did you file a ticket for that?
>>
>> Traian
>>
>>
>> -----Original Message-----
>> From: mapguide-internals-bounces at lists.osgeo.org 
>> [mailto:mapguide-internals-bounces at lists.osgeo.org] On Behalf Of 
>> Kenneth, GEOGRAF A/S
>> Sent: Thursday, November 08, 2007 2:22 PM
>> To: MapGuide Internals Mail List
>> Subject: Re: [mapguide-internals] OGR Provider and infinite loop
>>
>> Ok, I will, I just thought of it as a server issue.
>>
>> Regards, Kenneth, GEOGRAF A/S
>>
>>
>>
>> Jason Birch skrev:
>>  
>>> You might want to post this to FDO-internals?  I know that Traian
>>> listens in here, but...
>>>
>>> Jason
>>>
>>> -----Original Message-----
>>> From: Kenneth, GEOGRAF A/S
>>> Subject: [mapguide-internals] OGR Provider and infinite loop
>>>
>>> With this new info, can anyone give a guess as to what the problem 
>>> might
>>> be?
>>> _______________________________________________
>>> mapguide-internals mailing list
>>> mapguide-internals at lists.osgeo.org
>>> http://lists.osgeo.org/mailman/listinfo/mapguide-internals
>>>
>>>     
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