mirror of
https://github.com/moparisthebest/SickRage
synced 2024-11-19 07:45:06 -05:00
101 lines
3.2 KiB
Python
101 lines
3.2 KiB
Python
|
# sybase/pysybase.py
|
||
|
|
# Copyright (C) 2010-2014 the SQLAlchemy authors and contributors <see AUTHORS file>
|
||
|
|
#
|
||
|
|
# This module is part of SQLAlchemy and is released under
|
||
|
|
# the MIT License: http://www.opensource.org/licenses/mit-license.php
|
||
|
|
|
||
|
|
"""
|
||
|
|
.. dialect:: sybase+pysybase
|
||
|
|
:name: Python-Sybase
|
||
|
|
:dbapi: Sybase
|
||
|
|
:connectstring: sybase+pysybase://<username>:<password>@<dsn>/[database name]
|
||
|
|
:url: http://python-sybase.sourceforge.net/
|
||
|
|
|
||
|
|
Unicode Support
|
||
|
|
---------------
|
||
|
|
|
||
|
|
The python-sybase driver does not appear to support non-ASCII strings of any
|
||
|
|
kind at this time.
|
||
|
|
|
||
|
|
"""
|
||
|
|
|
||
|
|
from sqlalchemy import types as sqltypes, processors
|
||
|
|
from sqlalchemy.dialects.sybase.base import SybaseDialect, \
|
||
|
|
SybaseExecutionContext, SybaseSQLCompiler
|
||
|
|
|
||
|
|
|
||
|
|
class _SybNumeric(sqltypes.Numeric):
|
||
|
|
def result_processor(self, dialect, type_):
|
||
|
|
if not self.asdecimal:
|
||
|
|
return processors.to_float
|
||
|
|
else:
|
||
|
|
return sqltypes.Numeric.result_processor(self, dialect, type_)
|
||
|
|
|
||
|
|
|
||
|
|
class SybaseExecutionContext_pysybase(SybaseExecutionContext):
|
||
|
|
|
||
|
|
def set_ddl_autocommit(self, dbapi_connection, value):
|
||
|
|
if value:
|
||
|
|
# call commit() on the Sybase connection directly,
|
||
|
|
# to avoid any side effects of calling a Connection
|
||
|
|
# transactional method inside of pre_exec()
|
||
|
|
dbapi_connection.commit()
|
||
|
|
|
||
|
|
def pre_exec(self):
|
||
|
|
SybaseExecutionContext.pre_exec(self)
|
||
|
|
|
||
|
|
for param in self.parameters:
|
||
|
|
for key in list(param):
|
||
|
|
param["@" + key] = param[key]
|
||
|
|
del param[key]
|
||
|
|
|
||
|
|
|
||
|
|
class SybaseSQLCompiler_pysybase(SybaseSQLCompiler):
|
||
|
|
def bindparam_string(self, name, **kw):
|
||
|
|
return "@" + name
|
||
|
|
|
||
|
|
|
||
|
|
class SybaseDialect_pysybase(SybaseDialect):
|
||
|
|
driver = 'pysybase'
|
||
|
|
execution_ctx_cls = SybaseExecutionContext_pysybase
|
||
|
|
statement_compiler = SybaseSQLCompiler_pysybase
|
||
|
|
|
||
|
|
colspecs = {
|
||
|
|
sqltypes.Numeric: _SybNumeric,
|
||
|
|
sqltypes.Float: sqltypes.Float
|
||
|
|
}
|
||
|
|
|
||
|
|
@classmethod
|
||
|
|
def dbapi(cls):
|
||
|
|
import Sybase
|
||
|
|
return Sybase
|
||
|
|
|
||
|
|
def create_connect_args(self, url):
|
||
|
|
opts = url.translate_connect_args(username='user', password='passwd')
|
||
|
|
|
||
|
|
return ([opts.pop('host')], opts)
|
||
|
|
|
||
|
|
def do_executemany(self, cursor, statement, parameters, context=None):
|
||
|
|
# calling python-sybase executemany yields:
|
||
|
|
# TypeError: string too long for buffer
|
||
|
|
for param in parameters:
|
||
|
|
cursor.execute(statement, param)
|
||
|
|
|
||
|
|
def _get_server_version_info(self, connection):
|
||
|
|
vers = connection.scalar("select @@version_number")
|
||
|
|
# i.e. 15500, 15000, 12500 == (15, 5, 0, 0), (15, 0, 0, 0),
|
||
|
|
# (12, 5, 0, 0)
|
||
|
|
return (vers / 1000, vers % 1000 / 100, vers % 100 / 10, vers % 10)
|
||
|
|
|
||
|
|
def is_disconnect(self, e, connection, cursor):
|
||
|
|
if isinstance(e, (self.dbapi.OperationalError,
|
||
|
|
self.dbapi.ProgrammingError)):
|
||
|
|
msg = str(e)
|
||
|
|
return ('Unable to complete network request to host' in msg or
|
||
|
|
'Invalid connection state' in msg or
|
||
|
|
'Invalid cursor state' in msg)
|
||
|
|
else:
|
||
|
|
return False
|
||
|
|
|
||
|
|
dialect = SybaseDialect_pysybase
|