MySQLAdaptor.py :  » Database » Modeling-Framework » Modeling-0.9 » Modeling » DatabaseAdaptors » MySQLAdaptorLayer » Python Open Source

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Python Open Source » Database » Modeling Framework 
Modeling Framework » Modeling 0.9 » Modeling » DatabaseAdaptors » MySQLAdaptorLayer » MySQLAdaptor.py
# -*- coding: iso-8859-1 -*-
#-----------------------------------------------------------------------------
# Modeling Framework: an Object-Relational Bridge for python
#
# Copyright (c) 2001-2004 Sbastien Bigaret <sbigaret@users.sourceforge.net>
# All rights reserved.
#
# This file is part of the Modeling Framework.
#
# This code is distributed under a "3-clause BSD"-style license;
# see the LICENSE file for details.
#-----------------------------------------------------------------------------


"""
MySQLAdaptor

  CVS information

    $Id: MySQLAdaptor.py 933 2004-08-02 19:58:54Z sbigaret $
  
"""

__version__='$Revision: 933 $'[11:-2]

#
from Modeling.logging import db_info
from Modeling.utils import staticmethod
from Modeling.DatabaseAdaptors.AbstractDBAPI2AdaptorLayer import AbstractDBAPI2Adaptor

import MySQLdb


class MySQLAdaptor(AbstractDBAPI2Adaptor.AbstractDBAPI2Adaptor):
  """
  """
  
  def underlying_py_adaptor_module():
    return MySQLdb
  underlying_py_adaptor_module=staticmethod(underlying_py_adaptor_module)

  def createAdaptorContext(self):
    "See Modeling.interfaces.Adaptor for details"
    from MySQLAdaptorContext import MySQLAdaptorContext
    concreteAdaptorContext=MySQLAdaptorContext(self)
    self._contexts.append(concreteAdaptorContext)
    return concreteAdaptorContext
  
  def defaultExpressionClass(self):
    "Returns PostgresqlSQLExpression"
    from MySQLSQLExpression import MySQLSQLExpression
    return MySQLSQLExpression

  def expressionFactory(self):
    "See Modeling.interfaces.Adaptor for details"
    return SQLExpressionFactory
  
  def schemaGenerationFactory(self):
    "See Modeling.interfaces.Adaptor for details"
    from MySQLSchemaGeneration import MySQLSchemaGeneration
    return MySQLSchemaGeneration(self)
  
  def dbAPI_connectionDictionaryForConnect(self, aModelConnectionDictionary):
    """
    Returns a dictionary usable as keyword parameters by
    MySQLSchemaGeneration.connect. Between the original dict. and the
    returned one, the matching of keys goes like this:

      - 'database' -> 'db'

      - 'user' -> user' (unchanged)

      - 'password' -> 'passwd'

      - 'host' -> 'host' (unchanged)
      
      - 'port' -> 'port' (unchanged) if and only if the key exists
      
    """
    dbAPI_d={ 'db':     '%(database)s'%aModelConnectionDictionary,
              'user':   '%(user)s'%aModelConnectionDictionary,
              'passwd': '%(password)s'%aModelConnectionDictionary,
              'host': '%(host)s'%aModelConnectionDictionary }
    if aModelConnectionDictionary.get('port'):
      dbAPI_d['port']=int(aModelConnectionDictionary['port'])
    return dbAPI_d
      
  def dbAPI_gimmeCnxAndCursorForDBAdmin(self, administrativeConnectionDictionary):
    cnxDict=self.dbAPI_connectionDictionaryForConnect(administrativeConnectionDictionary)
    cnx=apply(self.underlying_py_adaptor_module().connect, (), cnxDict)
    #cnx.autocommit()
    return cnx, cnx.cursor()
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