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Moved DatabaseCreation.data_types properties to DatabaseWrapper. 

refs #22340.
This commit is contained in:
Tim Graham 2014-12-29 15:14:40 -05:00
parent 32ca159c96
commit 93d73dac91
13 changed files with 169 additions and 159 deletions
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6
django/db/backends/__init__.py
View File

@ -39,6 +39,12 @@ class BaseDatabaseWrapper(object):
"""
Represents a database connection.
"""
# Mapping of Field objects to their column types.
data_types = {}
# Mapping of Field objects to their SQL suffix such as AUTOINCREMENT.
data_types_suffix = {}
# Mapping of Field objects to their SQL for CHECK constraints.
data_type_check_constraints = {}
ops = None
vendor = 'unknown'
SchemaEditorClass = None

4
django/db/backends/creation.py
View File

@ -26,10 +26,6 @@ class BaseDatabaseCreation(object):
Fields, the SQL used to create and destroy tables, and the creation and
destruction of test databases.
"""
data_types = {}
data_types_suffix = {}
data_type_check_constraints = {}
def __init__(self, connection):
self.connection = connection

39
django/db/backends/mysql/base.py
View File

@ -415,6 +415,45 @@ class DatabaseOperations(BaseDatabaseOperations):
class DatabaseWrapper(BaseDatabaseWrapper):
vendor = 'mysql'
# This dictionary maps Field objects to their associated MySQL column
# types, as strings. Column-type strings can contain format strings; they'll
# be interpolated against the values of Field.__dict__ before being output.
# If a column type is set to None, it won't be included in the output.
_data_types = {
'AutoField': 'integer AUTO_INCREMENT',
'BinaryField': 'longblob',
'BooleanField': 'bool',
'CharField': 'varchar(%(max_length)s)',
'CommaSeparatedIntegerField': 'varchar(%(max_length)s)',
'DateField': 'date',
'DateTimeField': 'datetime',
'DecimalField': 'numeric(%(max_digits)s, %(decimal_places)s)',
'DurationField': 'bigint',
'FileField': 'varchar(%(max_length)s)',
'FilePathField': 'varchar(%(max_length)s)',
'FloatField': 'double precision',
'IntegerField': 'integer',
'BigIntegerField': 'bigint',
'IPAddressField': 'char(15)',
'GenericIPAddressField': 'char(39)',
'NullBooleanField': 'bool',
'OneToOneField': 'integer',
'PositiveIntegerField': 'integer UNSIGNED',
'PositiveSmallIntegerField': 'smallint UNSIGNED',
'SlugField': 'varchar(%(max_length)s)',
'SmallIntegerField': 'smallint',
'TextField': 'longtext',
'TimeField': 'time',
'UUIDField': 'char(32)',
}
@cached_property
def data_types(self):
if self.features.supports_microsecond_precision:
return dict(self._data_types, DateTimeField='datetime(6)', TimeField='time(6)')
else:
return self._data_types
operators = {
'exact': '= %s',
'iexact': 'LIKE %s',

39
django/db/backends/mysql/creation.py
View File

@ -1,46 +1,7 @@
from django.db.backends.creation import BaseDatabaseCreation
from django.utils.functional import cached_property
class DatabaseCreation(BaseDatabaseCreation):
# This dictionary maps Field objects to their associated MySQL column
# types, as strings. Column-type strings can contain format strings; they'll
# be interpolated against the values of Field.__dict__ before being output.
# If a column type is set to None, it won't be included in the output.
_data_types = {
'AutoField': 'integer AUTO_INCREMENT',
'BinaryField': 'longblob',
'BooleanField': 'bool',
'CharField': 'varchar(%(max_length)s)',
'CommaSeparatedIntegerField': 'varchar(%(max_length)s)',
'DateField': 'date',
'DateTimeField': 'datetime',
'DecimalField': 'numeric(%(max_digits)s, %(decimal_places)s)',
'DurationField': 'bigint',
'FileField': 'varchar(%(max_length)s)',
'FilePathField': 'varchar(%(max_length)s)',
'FloatField': 'double precision',
'IntegerField': 'integer',
'BigIntegerField': 'bigint',
'IPAddressField': 'char(15)',
'GenericIPAddressField': 'char(39)',
'NullBooleanField': 'bool',
'OneToOneField': 'integer',
'PositiveIntegerField': 'integer UNSIGNED',
'PositiveSmallIntegerField': 'smallint UNSIGNED',
'SlugField': 'varchar(%(max_length)s)',
'SmallIntegerField': 'smallint',
'TextField': 'longtext',
'TimeField': 'time',
'UUIDField': 'char(32)',
}
@cached_property
def data_types(self):
if self.connection.features.supports_microsecond_precision:
return dict(self._data_types, DateTimeField='datetime(6)', TimeField='time(6)')
else:
return self._data_types
def sql_table_creation_suffix(self):
suffix = []

42
django/db/backends/oracle/base.py
View File

@ -575,6 +575,48 @@ class _UninitializedOperatorsDescriptor(object):
class DatabaseWrapper(BaseDatabaseWrapper):
vendor = 'oracle'
# This dictionary maps Field objects to their associated Oracle column
# types, as strings. Column-type strings can contain format strings; they'll
# be interpolated against the values of Field.__dict__ before being output.
# If a column type is set to None, it won't be included in the output.
#
# Any format strings starting with "qn_" are quoted before being used in the
# output (the "qn_" prefix is stripped before the lookup is performed.
data_types = {
'AutoField': 'NUMBER(11)',
'BinaryField': 'BLOB',
'BooleanField': 'NUMBER(1)',
'CharField': 'NVARCHAR2(%(max_length)s)',
'CommaSeparatedIntegerField': 'VARCHAR2(%(max_length)s)',
'DateField': 'DATE',
'DateTimeField': 'TIMESTAMP',
'DecimalField': 'NUMBER(%(max_digits)s, %(decimal_places)s)',
'DurationField': 'INTERVAL DAY(9) TO SECOND(6)',
'FileField': 'NVARCHAR2(%(max_length)s)',
'FilePathField': 'NVARCHAR2(%(max_length)s)',
'FloatField': 'DOUBLE PRECISION',
'IntegerField': 'NUMBER(11)',
'BigIntegerField': 'NUMBER(19)',
'IPAddressField': 'VARCHAR2(15)',
'GenericIPAddressField': 'VARCHAR2(39)',
'NullBooleanField': 'NUMBER(1)',
'OneToOneField': 'NUMBER(11)',
'PositiveIntegerField': 'NUMBER(11)',
'PositiveSmallIntegerField': 'NUMBER(11)',
'SlugField': 'NVARCHAR2(%(max_length)s)',
'SmallIntegerField': 'NUMBER(11)',
'TextField': 'NCLOB',
'TimeField': 'TIMESTAMP',
'URLField': 'VARCHAR2(%(max_length)s)',
'UUIDField': 'VARCHAR2(32)',
}
data_type_check_constraints = {
'BooleanField': '%(qn_column)s IN (0,1)',
'NullBooleanField': '(%(qn_column)s IN (0,1)) OR (%(qn_column)s IS NULL)',
'PositiveIntegerField': '%(qn_column)s >= 0',
'PositiveSmallIntegerField': '%(qn_column)s >= 0',
}
operators = _UninitializedOperatorsDescriptor()
_standard_operators = {

43
django/db/backends/oracle/creation.py
View File

@ -12,49 +12,6 @@ PASSWORD = 'Im_a_lumberjack'
class DatabaseCreation(BaseDatabaseCreation):
# This dictionary maps Field objects to their associated Oracle column
# types, as strings. Column-type strings can contain format strings; they'll
# be interpolated against the values of Field.__dict__ before being output.
# If a column type is set to None, it won't be included in the output.
#
# Any format strings starting with "qn_" are quoted before being used in the
# output (the "qn_" prefix is stripped before the lookup is performed.
data_types = {
'AutoField': 'NUMBER(11)',
'BinaryField': 'BLOB',
'BooleanField': 'NUMBER(1)',
'CharField': 'NVARCHAR2(%(max_length)s)',
'CommaSeparatedIntegerField': 'VARCHAR2(%(max_length)s)',
'DateField': 'DATE',
'DateTimeField': 'TIMESTAMP',
'DecimalField': 'NUMBER(%(max_digits)s, %(decimal_places)s)',
'DurationField': 'INTERVAL DAY(9) TO SECOND(6)',
'FileField': 'NVARCHAR2(%(max_length)s)',
'FilePathField': 'NVARCHAR2(%(max_length)s)',
'FloatField': 'DOUBLE PRECISION',
'IntegerField': 'NUMBER(11)',
'BigIntegerField': 'NUMBER(19)',
'IPAddressField': 'VARCHAR2(15)',
'GenericIPAddressField': 'VARCHAR2(39)',
'NullBooleanField': 'NUMBER(1)',
'OneToOneField': 'NUMBER(11)',
'PositiveIntegerField': 'NUMBER(11)',
'PositiveSmallIntegerField': 'NUMBER(11)',
'SlugField': 'NVARCHAR2(%(max_length)s)',
'SmallIntegerField': 'NUMBER(11)',
'TextField': 'NCLOB',
'TimeField': 'TIMESTAMP',
'URLField': 'VARCHAR2(%(max_length)s)',
'UUIDField': 'VARCHAR2(32)',
}
data_type_check_constraints = {
'BooleanField': '%(qn_column)s IN (0,1)',
'NullBooleanField': '(%(qn_column)s IN (0,1)) OR (%(qn_column)s IS NULL)',
'PositiveIntegerField': '%(qn_column)s >= 0',
'PositiveSmallIntegerField': '%(qn_column)s >= 0',
}
def _create_test_db(self, verbosity=1, autoclobber=False, keepdb=False):
parameters = self._get_test_db_params()

35
django/db/backends/postgresql_psycopg2/base.py
View File

@ -71,6 +71,41 @@ class DatabaseFeatures(BaseDatabaseFeatures):
class DatabaseWrapper(BaseDatabaseWrapper):
vendor = 'postgresql'
# This dictionary maps Field objects to their associated PostgreSQL column
# types, as strings. Column-type strings can contain format strings; they'll
# be interpolated against the values of Field.__dict__ before being output.
# If a column type is set to None, it won't be included in the output.
data_types = {
'AutoField': 'serial',
'BinaryField': 'bytea',
'BooleanField': 'boolean',
'CharField': 'varchar(%(max_length)s)',
'CommaSeparatedIntegerField': 'varchar(%(max_length)s)',
'DateField': 'date',
'DateTimeField': 'timestamp with time zone',
'DecimalField': 'numeric(%(max_digits)s, %(decimal_places)s)',
'DurationField': 'interval',
'FileField': 'varchar(%(max_length)s)',
'FilePathField': 'varchar(%(max_length)s)',
'FloatField': 'double precision',
'IntegerField': 'integer',
'BigIntegerField': 'bigint',
'IPAddressField': 'inet',
'GenericIPAddressField': 'inet',
'NullBooleanField': 'boolean',
'OneToOneField': 'integer',
'PositiveIntegerField': 'integer',
'PositiveSmallIntegerField': 'smallint',
'SlugField': 'varchar(%(max_length)s)',
'SmallIntegerField': 'smallint',
'TextField': 'text',
'TimeField': 'time',
'UUIDField': 'uuid',
}
data_type_check_constraints = {
'PositiveIntegerField': '"%(column)s" >= 0',
'PositiveSmallIntegerField': '"%(column)s" >= 0',
}
operators = {
'exact': '= %s',
'iexact': '= UPPER(%s)',

36
django/db/backends/postgresql_psycopg2/creation.py
View File

@ -3,42 +3,6 @@ from django.db.backends.utils import truncate_name
class DatabaseCreation(BaseDatabaseCreation):
# This dictionary maps Field objects to their associated PostgreSQL column
# types, as strings. Column-type strings can contain format strings; they'll
# be interpolated against the values of Field.__dict__ before being output.
# If a column type is set to None, it won't be included in the output.
data_types = {
'AutoField': 'serial',
'BinaryField': 'bytea',
'BooleanField': 'boolean',
'CharField': 'varchar(%(max_length)s)',
'CommaSeparatedIntegerField': 'varchar(%(max_length)s)',
'DateField': 'date',
'DateTimeField': 'timestamp with time zone',
'DecimalField': 'numeric(%(max_digits)s, %(decimal_places)s)',
'DurationField': 'interval',
'FileField': 'varchar(%(max_length)s)',
'FilePathField': 'varchar(%(max_length)s)',
'FloatField': 'double precision',
'IntegerField': 'integer',
'BigIntegerField': 'bigint',
'IPAddressField': 'inet',
'GenericIPAddressField': 'inet',
'NullBooleanField': 'boolean',
'OneToOneField': 'integer',
'PositiveIntegerField': 'integer',
'PositiveSmallIntegerField': 'smallint',
'SlugField': 'varchar(%(max_length)s)',
'SmallIntegerField': 'smallint',
'TextField': 'text',
'TimeField': 'time',
'UUIDField': 'uuid',
}
data_type_check_constraints = {
'PositiveIntegerField': '"%(column)s" >= 0',
'PositiveSmallIntegerField': '"%(column)s" >= 0',
}
def sql_table_creation_suffix(self):
test_settings = self.connection.settings_dict['TEST']

33
django/db/backends/sqlite3/base.py
View File

@ -336,6 +336,39 @@ class DatabaseOperations(BaseDatabaseOperations):
class DatabaseWrapper(BaseDatabaseWrapper):
vendor = 'sqlite'
# SQLite doesn't actually support most of these types, but it "does the right
# thing" given more verbose field definitions, so leave them as is so that
# schema inspection is more useful.
data_types = {
'AutoField': 'integer',
'BinaryField': 'BLOB',
'BooleanField': 'bool',
'CharField': 'varchar(%(max_length)s)',
'CommaSeparatedIntegerField': 'varchar(%(max_length)s)',
'DateField': 'date',
'DateTimeField': 'datetime',
'DecimalField': 'decimal',
'DurationField': 'bigint',
'FileField': 'varchar(%(max_length)s)',
'FilePathField': 'varchar(%(max_length)s)',
'FloatField': 'real',
'IntegerField': 'integer',
'BigIntegerField': 'bigint',
'IPAddressField': 'char(15)',
'GenericIPAddressField': 'char(39)',
'NullBooleanField': 'bool',
'OneToOneField': 'integer',
'PositiveIntegerField': 'integer unsigned',
'PositiveSmallIntegerField': 'smallint unsigned',
'SlugField': 'varchar(%(max_length)s)',
'SmallIntegerField': 'smallint',
'TextField': 'text',
'TimeField': 'time',
'UUIDField': 'char(32)',
}
data_types_suffix = {
'AutoField': 'AUTOINCREMENT',
}
# 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.

33
django/db/backends/sqlite3/creation.py
View File

@ -7,39 +7,6 @@ from django.utils.six.moves import input
class DatabaseCreation(BaseDatabaseCreation):
# SQLite doesn't actually support most of these types, but it "does the right
# thing" given more verbose field definitions, so leave them as is so that
# schema inspection is more useful.
data_types = {
'AutoField': 'integer',
'BinaryField': 'BLOB',
'BooleanField': 'bool',
'CharField': 'varchar(%(max_length)s)',
'CommaSeparatedIntegerField': 'varchar(%(max_length)s)',
'DateField': 'date',
'DateTimeField': 'datetime',
'DecimalField': 'decimal',
'DurationField': 'bigint',
'FileField': 'varchar(%(max_length)s)',
'FilePathField': 'varchar(%(max_length)s)',
'FloatField': 'real',
'IntegerField': 'integer',
'BigIntegerField': 'bigint',
'IPAddressField': 'char(15)',
'GenericIPAddressField': 'char(39)',
'NullBooleanField': 'bool',
'OneToOneField': 'integer',
'PositiveIntegerField': 'integer unsigned',
'PositiveSmallIntegerField': 'smallint unsigned',
'SlugField': 'varchar(%(max_length)s)',
'SmallIntegerField': 'smallint',
'TextField': 'text',
'TimeField': 'time',
'UUIDField': 'char(32)',
}
data_types_suffix = {
'AutoField': 'AUTOINCREMENT',
}
def sql_for_pending_references(self, model, style, pending_references):
"SQLite3 doesn't support constraints"

6
django/db/models/fields/__init__.py
View File

@ -537,7 +537,7 @@ class Field(RegisterLookupMixin):
# exactly which wacky database column type you want to use.
data = DictWrapper(self.__dict__, connection.ops.quote_name, "qn_")
try:
return connection.creation.data_types[self.get_internal_type()] % data
return connection.data_types[self.get_internal_type()] % data
except KeyError:
return None
@ -550,7 +550,7 @@ class Field(RegisterLookupMixin):
data = DictWrapper(self.__dict__, connection.ops.quote_name, "qn_")
type_string = self.db_type(connection)
try:
check_string = connection.creation.data_type_check_constraints[self.get_internal_type()] % data
check_string = connection.data_type_check_constraints[self.get_internal_type()] % data
except KeyError:
check_string = None
return {
@ -559,7 +559,7 @@ class Field(RegisterLookupMixin):
}
def db_type_suffix(self, connection):
return connection.creation.data_types_suffix.get(self.get_internal_type())
return connection.data_types_suffix.get(self.get_internal_type())
def get_db_converters(self, connection):
if hasattr(self, 'from_db_value'):

10
docs/releases/1.8.txt
View File

@ -849,6 +849,16 @@ Also private APIs ``django.template.base.compile_string()``,
``django.template.loader.find_template()``, and
``django.template.loader.get_template_from_string()`` were removed.
Database backend API
~~~~~~~~~~~~~~~~~~~~
The following changes to the database backend API are documented to assist
those writing third-party backends in updating their code:
* The ``data_types``, ``data_types_suffix``, and
``data_type_check_constraints`` attributes have moved from the
``DatabaseCreation`` class to ``DatabaseWrapper``.
Miscellaneous
~~~~~~~~~~~~~

2
tests/commands_sql/tests.py
View File

@ -45,7 +45,7 @@ class SQLCommandsTestCase(TestCase):
'commands_sql_comment', 'commands_sql_book', 'commands_sql_book_comments'
})
@unittest.skipUnless('PositiveIntegerField' in connections[DEFAULT_DB_ALIAS].creation.data_type_check_constraints, 'Backend does not have checks.')
@unittest.skipUnless('PositiveIntegerField' in connections[DEFAULT_DB_ALIAS].data_type_check_constraints, 'Backend does not have checks.')
def test_sql_create_check(self):
"""Regression test for #23416 -- Check that db_params['check'] is respected."""
app_config = apps.get_app_config('commands_sql')