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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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# ingres/DBdriver.py |
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# |
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# DESCRIPTION: |
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# Driver to provide access to data via Holger Meyer's Ingres/Python Driver |
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# (including OpenIngres 1.2, CA Ingres 6.4, CA Ingres II) |
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# Requires ingmod (http://www.informatik.uni-rostock.de/~hme/software/) |
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# |
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# NOTES: |
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# Supported attributes (via connections.conf or <database> tag) |
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# dbame= This is the Ingres database to use (required) |
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# |
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#### THIS IS AN UNTESTED DRIVER #### |
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#### Any volunteers? #### |
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from string import lower |
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import sys |
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from gnue.common.datasources import GDataObjects, GConditions |
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from gnue.common.apps import GDebug |
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from gnue.common.datasources.drivers.DBSIG2.Driver \ |
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import DBSIG2.RecordSet, DBSIG2.ResultSet, DBSIG2.DataObject, \ |
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DBSIG2.DataObject_SQL, DBSIG2.DataObject_Object |
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try: |
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import ingmod as SIG2api |
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except ImportError, message: |
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tmsg = _("Driver not installed: ingmod for Ingres/Ingres II/OpenIngres [%s]") % message |
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raise GConnections.AdapterNotInstalled, tmsg |
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class Ingres_RecordSet(DBSIG2.RecordSet): |
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pass |
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class Ingres_ResultSet(DBSIG2.ResultSet): |
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def __init__(self, dataObject, cursor=None, defaultValues={}, masterRecordSet=None): |
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DBSIG2.ResultSet.__init__(self, dataObject, \ |
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cursor, defaultValues, masterRecordSet) |
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self._recordSetClass = Ingres_RecordSet |
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class Ingres_DataObject(DBSIG2.DataObject): |
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def __init__(self): |
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DBSIG2.DataObject.__init__(self) |
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self._DatabaseError = SIG2api.DatabaseError |
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self._resultSetClass = Ingres_ResultSet |
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def connect(self, connectData={}): |
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GDebug.printMesg(1,"Ingres database driver initializing") |
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try: |
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# TODO: I have no clue how to pass a Password!!!!! |
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self._dataConnection = SIG2api.connect(connectData['dbname'], \ |
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user=connectData['_username']) |
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except self._DatabaseError, value: |
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raise GDataObjects.LoginError, value |
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self._postConnect() |
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# |
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# Schema (metadata) functions |
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# |
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# TODO: See postgresql for an example of what these functions do. |
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# Return a list of the types of Schema objects this driver provides |
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def getSchemaTypes(self): |
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return [('view',_('Views'),1), |
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('table',_('Tables'),1)] |
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# Return a list of Schema objects |
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def getSchemaList(self, type=None): |
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return [] |
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# Find a schema object with specified name |
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def getSchemaByName(self, name, type=None): |
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return None |
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def _postConnect(self): |
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self.triggerExtensions = TriggerExtensions(self._dataConnection) |
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class Ingres_DataObject_Object(Ingres_DataObject, \ |
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DBSIG2.DataObject_Object): |
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def __init__(self): |
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Ingres_DataObject.__init__(self) |
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def _buildQuery(self, conditions={},forDetail=None,additionalSQL=""): |
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return DBSIG2.DataObject_Object._buildQuery(self, conditions,forDetail, additionalSQL) |
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class Ingres_DataObject_SQL(Ingres_DataObject, \ |
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DBSIG2.DataObject_SQL): |
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def __init__(self): |
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# Call DBSIG init first because Ingres_DataObject needs to overwrite |
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# some of its values |
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DBSIG2.DataObject_SQL.__init__(self) |
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Ingres_DataObject.__init__(self) |
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def _buildQuery(self, conditions={}): |
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return DBSIG2.DataObject_SQL._buildQuery(self, conditions) |
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# |
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# Extensions to Trigger Namespaces |
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# |
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class TriggerExtensions: |
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def __init__(self, connection): |
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self.__connection = connection |
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###################################### |
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# |
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# The following hashes describe |
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# this driver's characteristings. |
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# |
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###################################### |
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# |
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# All datasouce "types" and corresponding DataObject class |
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# |
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supportedDataObjects = { |
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'object': Ingres_DataObject_Object, |
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'sql': Ingres_DataObject_SQL |
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} |
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