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# |
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# This file is part of GNU Enterprise. |
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# |
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# GNU Enterprise is free software; you can redistribute it |
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# and/or modify it under the terms of the GNU General Public |
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# License as published by the Free Software Foundation; either |
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# version 2, or (at your option) any later version. |
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# |
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# GNU Enterprise is distributed in the hope that it will be |
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# useful, but WITHOUT ANY WARRANTY; without even the implied |
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# warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR |
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# PURPOSE. See the GNU General Public License for more details. |
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# |
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# You should have received a copy of the GNU General Public |
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# License along with program; see the file COPYING. If not, |
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# write to the Free Software Foundation, Inc., 59 Temple Place |
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# - Suite 330, Boston, MA 02111-1307, USA. |
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# |
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# Copyright 2000-2003 Free Software Foundation |
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# |
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# FILE: |
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# gadfly/DBdriver.py |
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# |
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# DESCRIPTION: |
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# Driver to provide access to data via Gadfly |
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# |
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# NOTES: |
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# The Gadfly notes state that it is not safe to use in a multi-user environment |
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# where there may be concurrent read/writes. Use at own risk :) |
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__all__ = ['Connection'] |
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import string |
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import sys |
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from gnue.common.apps import GDebug |
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from gnue.common.datasources import GDataObjects |
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from gnue.common.datasources.drivers import DBSIG2 |
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try: |
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import gadfly |
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except ImportError, message: |
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tmsg = _("Driver not installed: gadfly driver\n\n[%s") % message |
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raise GConnections.AdapterNotInstalled, tmsg |
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##### EVIL HACK |
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class Error(StandardError): |
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"""Generic Error""" |
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class InterfaceError(Error): |
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"""Interface Error""" |
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class DatabaseError(InterfaceError): |
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"""DB Error""" |
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class DataError(DatabaseError): |
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"""Data Error""" |
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class OperationalError(DatabaseError): |
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"""Operational Error""" |
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class IntegrityError(DatabaseError): |
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"""Integrity Error""" |
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##### END EVIL HACK |
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class Connection(DBSIG2.Connection): |
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_DatabaseError = Error |
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supportedDataObjects = { |
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'object': DataObject_Object, |
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'sql': DataObject_SQL |
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} |
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def connect(self, connectData={}): |
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GDebug.printMesg(1,"Gadfly database driver initializing") |
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#GDebug.printMesg(1,"Connecting with %s, %s" %( connectData['_dbname'], connectData['directory'])) |
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try: |
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self.native = gadfly.gadfly(connectData['dbname'], |
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connectData['directory']) |
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except self._DatabaseError, value: |
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#GDebug.printMesg(1,"Boom") |
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raise GDataObjects.LoginError, value |
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self._beginTransaction() |
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def _beginTransaction(self): |
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try: |
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self.native.begin() |
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except: |
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pass |
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# This should be over-ridden only if driver needs more than user/pass |
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def getLoginFields(self): |
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return [] |
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# |
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# Extensions |
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# |
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# Return the current date, according to database |
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# def getDate(self): |
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# pass |
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# Return a sequence number from sequence 'name' |
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# def getSequence(self, name): |
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# pass |
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# Run the SQL statement 'statement' |
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# def sql(self, statement): |
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# pass |
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