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Refactored OPERATOR_MAPPING so that it exists as django.db.connection.operators instead of django.db.backend.OPERATOR_MAPPING. Refs #5106 

git-svn-id: http://code.djangoproject.com/svn/django/trunk@5982 bcc190cf-cafb-0310-a4f2-bffc1f526a37
This commit is contained in:
Adrian Holovaty 2007-08-20 03:26:55 +00:00
parent b3912d3609
commit 14db37319b
9 changed files with 116 additions and 124 deletions
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27
django/db/backends/ado_mssql/base.py
View File

@ -84,20 +84,7 @@ class DatabaseOperations(BaseDatabaseOperations):
class DatabaseWrapper(BaseDatabaseWrapper):
features = DatabaseFeatures()
ops = DatabaseOperations()
def _cursor(self, settings):
if self.connection is None:
if settings.DATABASE_NAME == '' or settings.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 settings.DATABASE_HOST:
settings.DATABASE_HOST = "127.0.0.1"
# TODO: Handle DATABASE_PORT.
conn_string = "PROVIDER=SQLOLEDB;DATA SOURCE=%s;UID=%s;PWD=%s;DATABASE=%s" % (settings.DATABASE_HOST, settings.DATABASE_USER, settings.DATABASE_PASSWORD, settings.DATABASE_NAME)
self.connection = Database.connect(conn_string)
return self.connection.cursor()
OPERATOR_MAPPING = {
operators = {
'exact': '= %s',
'iexact': 'LIKE %s',
'contains': 'LIKE %s',
@ -111,3 +98,15 @@ OPERATOR_MAPPING = {
'istartswith': 'LIKE %s',
'iendswith': 'LIKE %s',
}
def _cursor(self, settings):
if self.connection is None:
if settings.DATABASE_NAME == '' or settings.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 settings.DATABASE_HOST:
settings.DATABASE_HOST = "127.0.0.1"
# TODO: Handle DATABASE_PORT.
conn_string = "PROVIDER=SQLOLEDB;DATA SOURCE=%s;UID=%s;PWD=%s;DATABASE=%s" % (settings.DATABASE_HOST, settings.DATABASE_USER, settings.DATABASE_PASSWORD, settings.DATABASE_NAME)
self.connection = Database.connect(conn_string)
return self.connection.cursor()

5
django/db/backends/dummy/base.py
View File

@ -26,8 +26,9 @@ class ComplainOnGetattr(object):
complain()
class DatabaseWrapper(object):
ops = ComplainOnGetattr()
features = ComplainOnGetattr()
ops = ComplainOnGetattr()
operators = {}
cursor = complain
_commit = complain
_rollback = ignore
@ -37,5 +38,3 @@ class DatabaseWrapper(object):
def close(self):
pass # close()
OPERATOR_MAPPING = {}

33
django/db/backends/mysql/base.py
View File

@ -121,6 +121,22 @@ class DatabaseOperations(BaseDatabaseOperations):
class DatabaseWrapper(BaseDatabaseWrapper):
features = DatabaseFeatures()
ops = DatabaseOperations()
operators = {
'exact': '= %s',
'iexact': 'LIKE %s',
'contains': 'LIKE BINARY %s',
'icontains': 'LIKE %s',
'regex': 'REGEXP BINARY %s',
'iregex': 'REGEXP %s',
'gt': '> %s',
'gte': '>= %s',
'lt': '< %s',
'lte': '<= %s',
'startswith': 'LIKE BINARY %s',
'endswith': 'LIKE BINARY %s',
'istartswith': 'LIKE %s',
'iendswith': 'LIKE %s',
}
def __init__(self, **kwargs):
super(DatabaseWrapper, self).__init__(**kwargs)
@ -178,20 +194,3 @@ class DatabaseWrapper(BaseDatabaseWrapper):
raise Exception('Unable to determine MySQL version from version string %r' % self.connection.get_server_info())
self.server_version = tuple([int(x) for x in m.groups()])
return self.server_version
OPERATOR_MAPPING = {
'exact': '= %s',
'iexact': 'LIKE %s',
'contains': 'LIKE BINARY %s',
'icontains': 'LIKE %s',
'regex': 'REGEXP BINARY %s',
'iregex': 'REGEXP %s',
'gt': '> %s',
'gte': '>= %s',
'lt': '< %s',
'lte': '<= %s',
'startswith': 'LIKE BINARY %s',
'endswith': 'LIKE BINARY %s',
'istartswith': 'LIKE %s',
'iendswith': 'LIKE %s',
}

33
django/db/backends/mysql_old/base.py
View File

@ -131,6 +131,22 @@ class DatabaseOperations(BaseDatabaseOperations):
class DatabaseWrapper(BaseDatabaseWrapper):
features = DatabaseFeatures()
ops = DatabaseOperations()
operators = {
'exact': '= %s',
'iexact': 'LIKE %s',
'contains': 'LIKE BINARY %s',
'icontains': 'LIKE %s',
'regex': 'REGEXP BINARY %s',
'iregex': 'REGEXP %s',
'gt': '> %s',
'gte': '>= %s',
'lt': '< %s',
'lte': '<= %s',
'startswith': 'LIKE BINARY %s',
'endswith': 'LIKE BINARY %s',
'istartswith': 'LIKE %s',
'iendswith': 'LIKE %s',
}
def __init__(self, **kwargs):
super(DatabaseWrapper, self).__init__(**kwargs)
@ -197,20 +213,3 @@ class DatabaseWrapper(BaseDatabaseWrapper):
raise Exception('Unable to determine MySQL version from version string %r' % self.connection.get_server_info())
self.server_version = tuple([int(x) for x in m.groups()])
return self.server_version
OPERATOR_MAPPING = {
'exact': '= %s',
'iexact': 'LIKE %s',
'contains': 'LIKE BINARY %s',
'icontains': 'LIKE %s',
'regex': 'REGEXP BINARY %s',
'iregex': 'REGEXP %s',
'gt': '> %s',
'gte': '>= %s',
'lt': '< %s',
'lte': '<= %s',
'startswith': 'LIKE BINARY %s',
'endswith': 'LIKE BINARY %s',
'istartswith': 'LIKE %s',
'iendswith': 'LIKE %s',
}

29
django/db/backends/oracle/base.py
View File

@ -385,6 +385,20 @@ class DatabaseOperations(BaseDatabaseOperations):
class DatabaseWrapper(BaseDatabaseWrapper):
features = DatabaseFeatures()
ops = DatabaseOperations()
operators = {
'exact': '= %s',
'iexact': '= UPPER(%s)',
'contains': "LIKE %s ESCAPE '\\'",
'icontains': "LIKE UPPER(%s) ESCAPE '\\'",
'gt': '> %s',
'gte': '>= %s',
'lt': '< %s',
'lte': '<= %s',
'startswith': "LIKE %s ESCAPE '\\'",
'endswith': "LIKE %s ESCAPE '\\'",
'istartswith': "LIKE UPPER(%s) ESCAPE '\\'",
'iendswith': "LIKE UPPER(%s) ESCAPE '\\'",
}
def _valid_connection(self):
return self.connection is not None
@ -498,18 +512,3 @@ def get_sequence_name(table):
def get_trigger_name(table):
name_length = DatabaseOperations().max_name_length() - 3
return '%s_TR' % util.truncate_name(table, name_length).upper()
OPERATOR_MAPPING = {
'exact': '= %s',
'iexact': '= UPPER(%s)',
'contains': "LIKE %s ESCAPE '\\'",
'icontains': "LIKE UPPER(%s) ESCAPE '\\'",
'gt': '> %s',
'gte': '>= %s',
'lt': '< %s',
'lte': '<= %s',
'startswith': "LIKE %s ESCAPE '\\'",
'endswith': "LIKE %s ESCAPE '\\'",
'istartswith': "LIKE UPPER(%s) ESCAPE '\\'",
'iendswith': "LIKE UPPER(%s) ESCAPE '\\'",
}

33
django/db/backends/postgresql/base.py
View File

@ -62,6 +62,22 @@ class DatabaseFeatures(BaseDatabaseFeatures):
class DatabaseWrapper(BaseDatabaseWrapper):
features = DatabaseFeatures()
ops = DatabaseOperations()
operators = {
'exact': '= %s',
'iexact': 'ILIKE %s',
'contains': 'LIKE %s',
'icontains': 'ILIKE %s',
'regex': '~ %s',
'iregex': '~* %s',
'gt': '> %s',
'gte': '>= %s',
'lt': '< %s',
'lte': '<= %s',
'startswith': 'LIKE %s',
'endswith': 'LIKE %s',
'istartswith': 'ILIKE %s',
'iendswith': 'ILIKE %s',
}
def _cursor(self, settings):
set_tz = False
@ -111,20 +127,3 @@ Database.register_type(Database.new_type((1114,1184), "TIMESTAMP", util.typecast
Database.register_type(Database.new_type((16,), "BOOLEAN", util.typecast_boolean))
Database.register_type(Database.new_type((1700,), "NUMERIC", util.typecast_decimal))
Database.register_type(Database.new_type(Database.types[1043].values, 'STRING', typecast_string))
OPERATOR_MAPPING = {
'exact': '= %s',
'iexact': 'ILIKE %s',
'contains': 'LIKE %s',
'icontains': 'ILIKE %s',
'regex': '~ %s',
'iregex': '~* %s',
'gt': '> %s',
'gte': '>= %s',
'lt': '< %s',
'lte': '<= %s',
'startswith': 'LIKE %s',
'endswith': 'LIKE %s',
'istartswith': 'ILIKE %s',
'iendswith': 'ILIKE %s',
}

33
django/db/backends/postgresql_psycopg2/base.py
View File

@ -24,6 +24,22 @@ class DatabaseFeatures(BaseDatabaseFeatures):
class DatabaseWrapper(BaseDatabaseWrapper):
features = DatabaseFeatures()
ops = DatabaseOperations()
operators = {
'exact': '= %s',
'iexact': 'ILIKE %s',
'contains': 'LIKE %s',
'icontains': 'ILIKE %s',
'regex': '~ %s',
'iregex': '~* %s',
'gt': '> %s',
'gte': '>= %s',
'lt': '< %s',
'lte': '<= %s',
'startswith': 'LIKE %s',
'endswith': 'LIKE %s',
'istartswith': 'ILIKE %s',
'iendswith': 'ILIKE %s',
}
def _cursor(self, settings):
set_tz = False
@ -52,20 +68,3 @@ class DatabaseWrapper(BaseDatabaseWrapper):
cursor.execute("SELECT version()")
self.ops.postgres_version = [int(val) for val in cursor.fetchone()[0].split()[1].split('.')]
return cursor
OPERATOR_MAPPING = {
'exact': '= %s',
'iexact': 'ILIKE %s',
'contains': 'LIKE %s',
'icontains': 'ILIKE %s',
'regex': '~ %s',
'iregex': '~* %s',
'gt': '> %s',
'gte': '>= %s',
'lt': '< %s',
'lte': '<= %s',
'startswith': 'LIKE %s',
'endswith': 'LIKE %s',
'istartswith': 'ILIKE %s',
'iendswith': 'ILIKE %s',
}

41
django/db/backends/sqlite3/base.py
View File

@ -76,6 +76,26 @@ class DatabaseWrapper(BaseDatabaseWrapper):
features = DatabaseFeatures()
ops = DatabaseOperations()
# SQLite requires LIKE statements to include an ESCAPE clause if the value
# being escaped has a percent or underscore in it.
# See http://www.sqlite.org/lang_expr.html for an explanation.
operators = {
'exact': '= %s',
'iexact': "LIKE %s ESCAPE '\\'",
'contains': "LIKE %s ESCAPE '\\'",
'icontains': "LIKE %s ESCAPE '\\'",
'regex': 'REGEXP %s',
'iregex': "REGEXP '(?i)' || %s",
'gt': '> %s',
'gte': '>= %s',
'lt': '< %s',
'lte': '<= %s',
'startswith': "LIKE %s ESCAPE '\\'",
'endswith': "LIKE %s ESCAPE '\\'",
'istartswith': "LIKE %s ESCAPE '\\'",
'iendswith': "LIKE %s ESCAPE '\\'",
}
def _cursor(self, settings):
if self.connection is None:
kwargs = {
@ -140,24 +160,3 @@ def _sqlite_regexp(re_pattern, re_string):
return bool(re.search(re_pattern, re_string))
except:
return False
# SQLite requires LIKE statements to include an ESCAPE clause if the value
# being escaped has a percent or underscore in it.
# See http://www.sqlite.org/lang_expr.html for an explanation.
OPERATOR_MAPPING = {
'exact': '= %s',
'iexact': "LIKE %s ESCAPE '\\'",
'contains': "LIKE %s ESCAPE '\\'",
'icontains': "LIKE %s ESCAPE '\\'",
'regex': 'REGEXP %s',
'iregex': "REGEXP '(?i)' || %s",
'gt': '> %s',
'gte': '>= %s',
'lt': '< %s',
'lte': '<= %s',
'startswith': "LIKE %s ESCAPE '\\'",
'endswith': "LIKE %s ESCAPE '\\'",
'istartswith': "LIKE %s ESCAPE '\\'",
'iendswith': "LIKE %s ESCAPE '\\'",
}

4
django/db/models/query.py
View File

@ -1,5 +1,5 @@
from django.conf import settings
from django.db import backend, connection, transaction
from django.db import connection, transaction
from django.db.models.fields import DateField, FieldDoesNotExist
from django.db.models import signals, loading
from django.dispatch import dispatcher
@ -797,7 +797,7 @@ def get_where_clause(lookup_type, table_prefix, field_name, value, db_type):
else:
format = '%s %s'
try:
return format % (field_sql, backend.OPERATOR_MAPPING[lookup_type] % cast_sql)
return format % (field_sql, connection.operators[lookup_type] % cast_sql)
except KeyError:
pass
if lookup_type == 'in':