[storm] future database support

[Noah Gift]

Wow.  Great work.  That didn't take long...

On 7/18/07, Willi Langenberger <wlang at wu-wien.ac.at> wrote:
> According to Gustavo Niemeyer:
> > > I think this can also be used with the Oracle Call Interface, ie
> > > something like:
> > >
> > >   rowid = cursor.execute("""INSERT INTO some_table
> > >                               (col1, col2) VALUES (:1, :2)
> > >                             RETURNING ROWID INTO :3""", col1, col2)
> >
> > Can you check if that really works?
>
> Tested with DCOracle2::
>
>   import random
>   import DCOracle2
>
>   dbc = DCOracle2.connect('...')
>   cursor = dbc.cursor()
>
>   foo = random.randint(0, 10000)
>   print 'inserting:', foo
>   sql = """insert into test_table (foo) values (:1)
>            returning rowid into :out_rowid"""
>   rowid = cursor._connection.rowid()         # empty rowid object
>   cursor.execute(sql, foo, out_rowid=rowid)  # put rowid value into it
>
>   # now reading the record with the rowid from the last statement
>   sql = """select foo from test_table
>             where rowid = :1"""
>   cursor.execute(sql, rowid)
>
>   foo2, = cursor.fetchone()
>   print 'reading:', foo2
>
> This seems to work.
>
> Whats left is finding a way to catch the INSERT statements in the
> oracle backend and wrap the rowid magic around it.
>
>
> \wlang{}
>
> --
> Willi.Langenberger at wu-wien.ac.at                Fax: +43/1/31336/9207
> Zentrum fuer Informatikdienste, Wirtschaftsuniversitaet Wien, Austria
>
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