[Gambas-user] Tobis "Blob" datatype (was "Hot to load and savbe ...")

[Bruce]

On Tue, 2013-07-16 at 18:34 +0930, Bruce wrote:
> On Tue, 2013-07-16 at 10:20 +0200, Tobias Boege wrote:
> > On Tue, 16 Jul 2013, Bruce wrote:
> > > On Mon, 2013-07-15 at 23:15 -0700, Randall Morgan wrote:
> > > Bruce,
> > > > 
> > > > The blob data type is a binary object and is a MySQL data type. Not a
> > > > Gambas data type. It is used in a few other databases as well.
> > > > 
> > > > 
> > > > On Mon, Jul 15, 2013 at 10:05 PM, Bruce <bbruen at ...2308...> wrote:
> > > > 
> > > > > On Mon, 2013-07-15 at 22:11 +0200, Tobias Boege wrote:
> > > > > 8<
> > > > > > Picture files _are_ binary files. But anyways, to get this thread done, I
> > > > > > have attached a sample project which lets you import and export binary
> > > > > > files of any kind to a local SQLite3 database.
> > > > > >
> > > > > > You should look carefully at the export functionality in
> > > > > btnExport_Click()
> > > > > > which selects a record in the database table and saves the corresponding
> > > > > > blob field to a file.
> > > > > >
> > > > > > Everything else in the project is just there for you to play around with
> > > > > it.
> > > > > >
> > > > > > Regards,
> > > > > > Tobi
> > > > >
> > > > > Hi Tobi,
> > > > >
> > > > > At lines 72 and 106 in your example project you declare hBlob as Blob. I
> > > > > have never heard of this datatype and can find no help on it?  If it
> > > > > exists I sure would like to know it.
> > > > >
> > > > > regards
> > > > > Bruce
> > > 
> > > Hi Randall,
> > > 
> > > Yep, I know what a rdbms blob is, I was just hoping there was a "Blob" class somewhere 
> > > in a gambas component that I didn't know about that would allow access to the raw data 
> > > from the gb.db translation of the blob into a string or whatever.
> > > 
> > > IIRC, recently there was a thread on a problem with postgresql v 9.2?? blobs that were being 
> > > returned from the database as escaped strings.  One of my colleagues fixed that on our 
> > > production database but woefully failed to document what the fix was.  I was just hoping to
> > > be able to reproduce the problem on a test db and see if I could figure out from the raw data
> > > exactly what the problem was and how to fix it forever, in case we need to do a db rebuild or 
> > > whatever.
> > > 
> > > regards
> > > Bruce
> > > 
> > 
> > Randall, Blob is a Gambas class that represents a DB's blob field.
> > 
> > Bruce, there's no special concealment about the Blob class :-) See the class
> > listing of gb.db[0].
> > 
> > Regards,
> > Tobi
> > 
> > [0] http://gambasdoc.org/help/comp/gb.db/?v3
> 
> Well I'll be hornswaggled!
> 
> tx Tobi
> 
and 30min later my problem is solved!
tx again

Bruce