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

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This commit is contained in:
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"

2
mysql/_mysql_const/CLIENT.py
View File

@ -11,4 +11,4 @@ CHANGE_USER = 512
INTERACTIVE = 1024
SSL = 2048
IGNORE_SIGPIPE = 4096
TRANSACTIONS = 8196
TRANSACTIONS = 8192 # mysql_com.h is WRONG

2
mysql/_mysqlmodule.c
View File

@ -1245,6 +1245,8 @@ _mysql_ConnectionObject_getattr(
return PyInt_FromLong((long)(self->open));
if (strcmp(name, "closed") == 0)
return PyInt_FromLong((long)!(self->open));
if (strcmp(name, "server_capabilities") == 0)
return PyInt_FromLong((long)(self->connection.server_capabilities));
return PyMember_Get((char *)self, _mysql_ConnectionObject_memberlist, name);
}