Bo Shi wrote:
> Hello,
>
> I had a custom dialect based on the PyODBC functionality that was
> working with SQLA SVN-6738. Upgrading to beta 3, my tests no longer
> pass, so I've begun the process updating - on_connect() was easy, now
> I'm stumped on connect(...). I've gotten to the point where, when
> using my dialect, connect() fails because it attempts to run
> self.dbapi.connect(...) but the PyODBC connector seems to implement it
> as a classmethod:
>
>
> Taking the following from the connector in revision control:
>
> 9 class PyODBCConnector(Connector):
>
> 27 @classmethod
> 28 def dbapi(cls):
> 29 return __import__('pyodbc')
>
> 84 def initialize(self, connection):
> 85 # determine FreeTDS first. can't issue SQL easily
> 86 # without getting unicode_statements/binds set up.
> 87
> 88 pyodbc = self.dbapi
> 89
> 90 dbapi_con = connection.connection
> 91
> 92 self.freetds = bool(re.match(r".*libtdsodbc.*\.so",
> dbapi_con.getinfo(pyodbc.SQL_DRIVER_NAME)))
>
>
> If dbapi is implemented as a class method, then wouldn't the call on
> line 92 fail? Indeed, that's what I'm seeing. So is self.dbapi
> getting assigned somewhere else?
yeah there's a slight misfortune in that naming scheme - the @classmethod
should have some different name, probably "import_dbapi". the
reassignment takes place on line 102 of sqlalchemy/engine/default.py.
this naming scheme is also present in 0.5 - it was just the
PyODBCConnector that somehow didn't catch up until recently.
>
>
> Thanks,
> Bo
>
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