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Finally, a definitive way to determine if transactions are available.

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adustman
2001-03-12 18:08:02 +00:00
parent 84bedad4a4
commit e00de5823c
3 changed files with 6 additions and 8 deletions
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10
mysql/MySQLdb.py
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@ -451,11 +451,7 @@ class Connection:
self.cursorclass = Cursor
self.db = apply(connect, (), kwargs)
self.quote_conv[types.StringType] = self.Thing2Literal
self.db.query('show variables')
r = self.db.store_result()
vars = r.fetch_row(0)
self._server_vars = {}
for k,v in vars: self._server_vars[k] = v
self._transactional = self.db.server_capabilities & CLIENT.TRANSACTIONS
if _threading: self.__lock = _threading.Lock()
if _threading:
@ -473,12 +469,12 @@ class Connection:
def commit(self):
"""Commit the current transaction."""
if self._server_vars.get('have_bdb','NO') == 'YES':
if self._transactional:
self.db.query("COMMIT")
def rollback(self):
"""Rollback the current transaction."""
if self._server_vars.get('have_bdb','NO') == 'YES':
if self._transactional:
self.db.query("ROLLBACK")
else: raise NotSupportedError, "Not supported by server"