sqlalchemy_msabramo_tox / lib / sqlalchemy / connectors / zxJDBC.py

# connectors/zxJDBC.py
# Copyright (C) 2005-2012 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

import sys
from . import Connector

class ZxJDBCConnector(Connector):
    driver = 'zxjdbc'

    supports_sane_rowcount = False
    supports_sane_multi_rowcount = False

    supports_unicode_binds = True
    supports_unicode_statements = sys.version > '2.5.0+'
    description_encoding = None
    default_paramstyle = 'qmark'

    jdbc_db_name = None
    jdbc_driver_name = None

    @classmethod
    def dbapi(cls):
        from com.ziclix.python.sql import zxJDBC
        return zxJDBC

    def _driver_kwargs(self):
        """Return kw arg dict to be sent to connect()."""
        return {}

    def _create_jdbc_url(self, url):
        """Create a JDBC url from a :class:`~sqlalchemy.engine.url.URL`"""
        return 'jdbc:%s://%s%s/%s' % (self.jdbc_db_name, url.host,
                                      url.port is not None 
                                        and ':%s' % url.port or '',
                                      url.database)

    def create_connect_args(self, url):
        opts = self._driver_kwargs()
        opts.update(url.query)
        return [
                [self._create_jdbc_url(url), 
                url.username, url.password, 
                self.jdbc_driver_name],
                opts]

    def is_disconnect(self, e, connection, cursor):
        if not isinstance(e, self.dbapi.ProgrammingError):
            return False
        e = str(e)
        return 'connection is closed' in e or 'cursor is closed' in e

    def _get_server_version_info(self, connection):
        # use connection.connection.dbversion, and parse appropriately
        # to get a tuple
        raise NotImplementedError()
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