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https://github.com/janeczku/calibre-web
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70 lines
1.9 KiB
Python
70 lines
1.9 KiB
Python
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# informix/informixdb.py
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# Copyright (C) 2005-2013 the SQLAlchemy authors and contributors <see AUTHORS file>
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#
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# This module is part of SQLAlchemy and is released under
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# the MIT License: http://www.opensource.org/licenses/mit-license.php
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"""
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.. dialect:: informix+informixdb
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:name: informixdb
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:dbapi: informixdb
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:connectstring: informix+informixdb://user:password@host/dbname
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:url: http://informixdb.sourceforge.net/
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"""
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import re
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from sqlalchemy.dialects.informix.base import InformixDialect
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from sqlalchemy.engine import default
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VERSION_RE = re.compile(r'(\d+)\.(\d+)(.+\d+)')
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class InformixExecutionContext_informixdb(default.DefaultExecutionContext):
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def post_exec(self):
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if self.isinsert:
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self._lastrowid = self.cursor.sqlerrd[1]
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def get_lastrowid(self):
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return self._lastrowid
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class InformixDialect_informixdb(InformixDialect):
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driver = 'informixdb'
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execution_ctx_cls = InformixExecutionContext_informixdb
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@classmethod
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def dbapi(cls):
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return __import__('informixdb')
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def create_connect_args(self, url):
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if url.host:
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dsn = '%s@%s' % (url.database, url.host)
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else:
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dsn = url.database
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if url.username:
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opt = {'user': url.username, 'password': url.password}
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else:
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opt = {}
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return ([dsn], opt)
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def _get_server_version_info(self, connection):
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# http://informixdb.sourceforge.net/manual.html#inspecting-version-numbers
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v = VERSION_RE.split(connection.connection.dbms_version)
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return (int(v[1]), int(v[2]), v[3])
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def is_disconnect(self, e, connection, cursor):
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if isinstance(e, self.dbapi.OperationalError):
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return 'closed the connection' in str(e) \
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or 'connection not open' in str(e)
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else:
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return False
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dialect = InformixDialect_informixdb
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