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Fixed #225 -- Added first stab at MS SQL Server support (via ADO). Th…

…anks to gmilas@gmail.com for the patch

git-svn-id: http://code.djangoproject.com/svn/django/trunk@879 bcc190cf-cafb-0310-a4f2-bffc1f526a37
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commit 24154b216682dfef7ff647a5c2f698b89ba429a6 1 parent 8254a7a
@adrianholovaty adrianholovaty authored
View
12 django/conf/global_settings.py
@@ -45,12 +45,12 @@
SEND_BROKEN_LINK_EMAILS = False
# Database connection info.
-DATABASE_ENGINE = 'postgresql' # 'postgresql', 'mysql', or 'sqlite3'.
-DATABASE_NAME = ''
-DATABASE_USER = ''
-DATABASE_PASSWORD = ''
-DATABASE_HOST = '' # Set to empty string for localhost.
-DATABASE_PORT = '' # Set to empty string for default.
+DATABASE_ENGINE = 'postgresql' # 'postgresql', 'mysql', 'sqlite3' or 'ado_mssql'.
+DATABASE_NAME = '' # Or path to database file if using sqlite3.
+DATABASE_USER = '' # Not used with sqlite3.
+DATABASE_PASSWORD = '' # Not used with sqlite3.
+DATABASE_HOST = '' # Set to empty string for localhost. Not used with sqlite3.
+DATABASE_PORT = '' # Set to empty string for default. Not used with sqlite3.
# Host for sending e-mail.
EMAIL_HOST = 'localhost'
View
2  django/conf/project_template/settings/main.py
@@ -10,7 +10,7 @@
LANGUAGE_CODE = 'en-us'
-DATABASE_ENGINE = 'postgresql' # 'postgresql', 'mysql', or 'sqlite3'.
+DATABASE_ENGINE = 'postgresql' # 'postgresql', 'mysql', 'sqlite3' or 'ado_mssql'.
DATABASE_NAME = '' # Or path to database file if using sqlite3.
DATABASE_USER = '' # Not used with sqlite3.
DATABASE_PASSWORD = '' # Not used with sqlite3.
View
153 django/core/db/backends/ado_mssql.py
@@ -0,0 +1,153 @@
+"""
+ADO MSSQL database backend for Django.
+
+Requires adodbapi 2.0.1: http://adodbapi.sourceforge.net/
+"""
+
+from django.core.db import base
+from django.core.db.dicthelpers import *
+import adodbapi as Database
+import datetime
+try:
+ import mx
+except ImportError:
+ mx = None
+
+DatabaseError = Database.DatabaseError
+
+# We need to use a special Cursor class because adodbapi expects question-mark
+# param style, but Django expects "%s". This cursor converts question marks to
+# format-string style.
+class Cursor(Database.Cursor):
+ def executeHelper(self, operation, isStoredProcedureCall, parameters=None):
+ if parameters is not None and "%s" in operation:
+ operation = operation.replace("%s", "?")
+ Database.Cursor.executeHelper(self, operation, isStoredProcedureCall, parameters)
+
+class Connection(Database.Connection):
+ def cursor(self):
+ return Cursor(self)
+Database.Connection = Connection
+
+origCVtoP = Database.convertVariantToPython
+def variantToPython(variant, adType):
+ if type(variant) == bool and adType == 11:
+ return variant # bool not 1/0
+ res = origCVtoP(variant, adType)
+ if mx is not None and type(res) == mx.DateTime.mxDateTime.DateTimeType:
+ # Convert ms.DateTime objects to Python datetime.datetime objects.
+ tv = list(res.tuple()[:7])
+ tv[-2] = int(tv[-2])
+ return datetime.datetime(*tuple(tv))
+ if type(res) == float and str(res)[-2:] == ".0":
+ return int(res) # If float but int, then int.
+ return res
+Database.convertVariantToPython = variantToPython
+
+class DatabaseWrapper:
+ def __init__(self):
+ self.connection = None
+ self.queries = []
+
+ def cursor(self):
+ from django.conf.settings import DATABASE_USER, DATABASE_NAME, DATABASE_HOST, DATABASE_PORT, DATABASE_PASSWORD, DEBUG
+ if self.connection is None:
+ if DATABASE_NAME == '' or DATABASE_USER == '':
+ from django.core.exceptions import ImproperlyConfigured
+ raise ImproperlyConfigured, "You need to specify both DATABASE_NAME and DATABASE_USER in your Django settings file."
+ if not DATABASE_HOST:
+ DATABASE_HOST = "127.0.0.1"
+ # TODO: Handle DATABASE_PORT.
+ conn_string = "PROVIDER=SQLOLEDB;DATA SOURCE=%s;UID=%s;PWD=%s;DATABASE=%s" % (DATABASE_HOST, DATABASE_USER, DATABASE_PASSWORD, DATABASE_NAME)
+ self.connection = Database.connect(conn_string)
+ cursor = self.connection.cursor()
+ if DEBUG:
+ return base.CursorDebugWrapper(cursor, self)
+ return cursor
+
+ def commit(self):
+ return self.connection.commit()
+
+ def rollback(self):
+ if self.connection:
+ return self.connection.rollback()
+
+ def close(self):
+ if self.connection is not None:
+ self.connection.close()
+ self.connection = None
+
+def get_last_insert_id(cursor, table_name, pk_name):
+ cursor.execute("SELECT %s FROM %s WHERE %s = @@IDENTITY" % (pk_name, table_name, pk_name))
+ return cursor.fetchone()[0]
+
+def get_date_extract_sql(lookup_type, table_name):
+ # lookup_type is 'year', 'month', 'day'
+ return "DATEPART(%s, %s)" % (lookup_type, table_name)
+
+def get_date_trunc_sql(lookup_type, field_name):
+ # lookup_type is 'year', 'month', 'day'
+ if lookup_type=='year':
+ return "Convert(datetime, Convert(varchar, DATEPART(year, %s)) + '/01/01')" % field_name
+ if lookup_type=='month':
+ return "Convert(datetime, Convert(varchar, DATEPART(year, %s)) + '/' + Convert(varchar, DATEPART(month, %s)) + '/01')" % (field_name, field_name)
+ if lookup_type=='day':
+ return "Convert(datetime, Convert(varchar(12), %s))" % field_name
+
+def get_limit_offset_sql(limit, offset=None):
+ # TODO: This is a guess. Make sure this is correct.
+ sql = "LIMIT %s" % limit
+ if offset and offset != 0:
+ sql += " OFFSET %s" % offset
+ return sql
+
+def get_random_function_sql():
+ # TODO: This is a guess. Make sure this is correct.
+ return "RANDOM()"
+
+def get_relations(cursor, table_name):
+ raise NotImplementedError
+
+OPERATOR_MAPPING = {
+ 'exact': '=',
+ 'iexact': 'LIKE',
+ 'contains': 'LIKE',
+ 'icontains': 'LIKE',
+ 'ne': '!=',
+ 'gt': '>',
+ 'gte': '>=',
+ 'lt': '<',
+ 'lte': '<=',
+ 'startswith': 'LIKE',
+ 'endswith': 'LIKE',
+ 'istartswith': 'LIKE',
+ 'iendswith': 'LIKE',
+}
+
+DATA_TYPES = {
+ 'AutoField': 'int IDENTITY (1, 1)',
+ 'BooleanField': 'bit',
+ 'CharField': 'varchar(%(maxlength)s)',
+ 'CommaSeparatedIntegerField': 'varchar(%(maxlength)s)',
+ 'DateField': 'smalldatetime',
+ 'DateTimeField': 'smalldatetime',
+ 'EmailField': 'varchar(75)',
+ 'FileField': 'varchar(100)',
+ 'FilePathField': 'varchar(100)',
+ 'FloatField': 'numeric(%(max_digits)s, %(decimal_places)s)',
+ 'ImageField': 'varchar(100)',
+ 'IntegerField': 'int',
+ 'IPAddressField': 'char(15)',
+ 'ManyToManyField': None,
+ 'NullBooleanField': 'bit',
+ 'OneToOneField': 'int',
+ 'PhoneNumberField': 'varchar(20)',
+ 'PositiveIntegerField': 'int CONSTRAINT [CK_int_pos_%(name)s] CHECK ([%(name)s] > 0)',
+ 'PositiveSmallIntegerField': 'smallint CONSTRAINT [CK_smallint_pos_%(name)s] CHECK ([%(name)s] > 0)',
+ 'SlugField': 'varchar(50)',
+ 'SmallIntegerField': 'smallint',
+ 'TextField': 'text',
+ 'TimeField': 'time',
+ 'URLField': 'varchar(200)',
+ 'USStateField': 'varchar(2)',
+}
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