[Qgis-developer] question about ogr provider

[godofredo contreras]

Hi :

I sent a mail to gdal-dev list to ask about the testcapabilities of mysql ogr driver
and in effect it is a bug  in the driver, something similar happens to postgresql driver.

Could it be safe to test in ogrprovider if driver is mysql and set the capabilities manually
temporarily until this bug has been fixed?

Best regards
Godofredo Contreras





From: frdcn at hotmail.com
To: wonder.sk at gmail.com
Date: Tue, 25 Sep 2007 20:25:09 +0000
CC: qgis-developer at lists.qgis.org
Subject: Re: [Qgis-developer] question about ogr provider








Thank you Martin for your answer. I made a program
to test what capabilities is the mysql ogr driver reporting
and it only reports: 

Random Read.
Fast Spatial Filter.
Fast Feature Count.

But there have to be something wrong with the driver capabilities report
because in the same test program I use CreateFeature and it works
but it is not reporting Sequential Write.


Regards
Godofredo Contreras

> Date: Tue, 25 Sep 2007 21:49:09 +0200
> From: wonder.sk at gmail.com
> To: frdcn at hotmail.com
> Subject: Re: [Qgis-developer] question about ogr provider
> CC: qgis-developer at lists.qgis.org
> 
> Hi,
> 
> QGIS uses TestCapability() method of ogr layer to detect its
> capabilities and enables editing only when some of the write
> operations are available - so that would mean that mysql driver in OGR
> doesn´t support writing - also when looking at its sources it doesn´t
> look like it would support it.
> 
> Martin
> 
> On 9/25/07, godofredo contreras <frdcn at hotmail.com> wrote:
> >
> > Hi:
> >     I have been working in a mysql plugin using ogr provider, reading is now
> > working
> >    but I can´t get writing working.  ogrinfo --formats reports mysql (read /
> > write), I registered
> >    the datasource  with update support with no errors.
> >
> >    ogrDataSource =
> > OGRSFDriverRegistrar::Open(QFile::encodeName(uri).constData(),
> > TRUE, &ogrDriver);
> >
> >    But the option toggle editing is always deactivated with this kind of
> > datasource
> >
> >    How is this option activated?
> >
> >
> > Regards
> >
> > Godofredo Contreras
> >
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