mirror of
https://github.com/django/django.git
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Removed the mysql_old backend. It smells bad and has no friends.
git-svn-id: http://code.djangoproject.com/svn/django/trunk@7949 bcc190cf-cafb-0310-a4f2-bffc1f526a37
This commit is contained in:
Malcolm Tredinnick
@@ -1,215 +0,0 @@
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"""
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MySQL database backend for Django.
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Requires MySQLdb: http://sourceforge.net/projects/mysql-python
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"""
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from django.db.backends import BaseDatabaseWrapper, BaseDatabaseFeatures, BaseDatabaseOperations, util
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from django.utils.encoding import force_unicode
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try:
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import MySQLdb as Database
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except ImportError, e:
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from django.core.exceptions import ImproperlyConfigured
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raise ImproperlyConfigured("Error loading MySQLdb module: %s" % e)
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from MySQLdb.converters import conversions
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from MySQLdb.constants import FIELD_TYPE
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import types
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import re
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DatabaseError = Database.DatabaseError
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IntegrityError = Database.IntegrityError
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django_conversions = conversions.copy()
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django_conversions.update({
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types.BooleanType: util.rev_typecast_boolean,
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FIELD_TYPE.DATETIME: util.typecast_timestamp,
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FIELD_TYPE.DATE: util.typecast_date,
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FIELD_TYPE.TIME: util.typecast_time,
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FIELD_TYPE.DECIMAL: util.typecast_decimal,
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FIELD_TYPE.STRING: force_unicode,
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FIELD_TYPE.VAR_STRING: force_unicode,
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# Note: We don't add a convertor for BLOB here. Doesn't seem to be required.
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})
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# This should match the numerical portion of the version numbers (we can treat
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# versions like 5.0.24 and 5.0.24a as the same). Based on the list of version
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# at http://dev.mysql.com/doc/refman/4.1/en/news.html and
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# http://dev.mysql.com/doc/refman/5.0/en/news.html .
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server_version_re = re.compile(r'(\d{1,2})\.(\d{1,2})\.(\d{1,2})')
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# This is an extra debug layer over MySQL queries, to display warnings.
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# It's only used when DEBUG=True.
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class MysqlDebugWrapper:
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def __init__(self, cursor):
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self.cursor = cursor
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def execute(self, sql, params=()):
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try:
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return self.cursor.execute(sql, params)
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except Database.Warning, w:
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self.cursor.execute("SHOW WARNINGS")
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raise Database.Warning("%s: %s" % (w, self.cursor.fetchall()))
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def executemany(self, sql, param_list):
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try:
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return self.cursor.executemany(sql, param_list)
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except Database.Warning, w:
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self.cursor.execute("SHOW WARNINGS")
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raise Database.Warning("%s: %s" % (w, self.cursor.fetchall()))
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def __getattr__(self, attr):
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if attr in self.__dict__:
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return self.__dict__[attr]
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else:
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return getattr(self.cursor, attr)
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class DatabaseFeatures(BaseDatabaseFeatures):
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inline_fk_references = False
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empty_fetchmany_value = ()
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update_can_self_select = False
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supports_usecs = False
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class DatabaseOperations(BaseDatabaseOperations):
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def date_extract_sql(self, lookup_type, field_name):
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# http://dev.mysql.com/doc/mysql/en/date-and-time-functions.html
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return "EXTRACT(%s FROM %s)" % (lookup_type.upper(), field_name)
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def date_trunc_sql(self, lookup_type, field_name):
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fields = ['year', 'month', 'day', 'hour', 'minute', 'second']
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format = ('%%Y-', '%%m', '-%%d', ' %%H:', '%%i', ':%%s') # Use double percents to escape.
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format_def = ('0000-', '01', '-01', ' 00:', '00', ':00')
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try:
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i = fields.index(lookup_type) + 1
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except ValueError:
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sql = field_name
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else:
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format_str = ''.join([f for f in format[:i]] + [f for f in format_def[i:]])
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sql = "CAST(DATE_FORMAT(%s, '%s') AS DATETIME)" % (field_name, format_str)
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return sql
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def drop_foreignkey_sql(self):
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return "DROP FOREIGN KEY"
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def fulltext_search_sql(self, field_name):
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return 'MATCH (%s) AGAINST (%%s IN BOOLEAN MODE)' % field_name
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def no_limit_value(self):
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# 2**64 - 1, as recommended by the MySQL documentation
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return 18446744073709551615L
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def quote_name(self, name):
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if name.startswith("`") and name.endswith("`"):
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return name # Quoting once is enough.
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return "`%s`" % name
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def random_function_sql(self):
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return 'RAND()'
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def sql_flush(self, style, tables, sequences):
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# NB: The generated SQL below is specific to MySQL
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# 'TRUNCATE x;', 'TRUNCATE y;', 'TRUNCATE z;'... style SQL statements
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# to clear all tables of all data
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if tables:
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sql = ['SET FOREIGN_KEY_CHECKS = 0;']
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for table in tables:
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sql.append('%s %s;' % (style.SQL_KEYWORD('TRUNCATE'), style.SQL_FIELD(self.quote_name(table))))
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sql.append('SET FOREIGN_KEY_CHECKS = 1;')
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# 'ALTER TABLE table AUTO_INCREMENT = 1;'... style SQL statements
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# to reset sequence indices
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sql.extend(["%s %s %s %s %s;" % \
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(style.SQL_KEYWORD('ALTER'),
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style.SQL_KEYWORD('TABLE'),
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style.SQL_TABLE(self.quote_name(sequence['table'])),
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style.SQL_KEYWORD('AUTO_INCREMENT'),
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style.SQL_FIELD('= 1'),
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) for sequence in sequences])
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return sql
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else:
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return []
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class DatabaseWrapper(BaseDatabaseWrapper):
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features = DatabaseFeatures()
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ops = DatabaseOperations()
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operators = {
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'exact': '= BINARY %s',
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'iexact': 'LIKE %s',
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'contains': 'LIKE BINARY %s',
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'icontains': 'LIKE %s',
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'regex': 'REGEXP BINARY %s',
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'iregex': 'REGEXP %s',
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'gt': '> %s',
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'gte': '>= %s',
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'lt': '< %s',
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'lte': '<= %s',
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'startswith': 'LIKE BINARY %s',
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'endswith': 'LIKE BINARY %s',
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'istartswith': 'LIKE %s',
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'iendswith': 'LIKE %s',
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}
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def __init__(self, **kwargs):
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super(DatabaseWrapper, self).__init__(**kwargs)
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self.server_version = None
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def _valid_connection(self):
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if self.connection is not None:
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try:
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self.connection.ping()
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return True
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except DatabaseError:
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self.connection.close()
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self.connection = None
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return False
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def _cursor(self, settings):
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if not self._valid_connection():
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kwargs = {
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# Note: use_unicode intentonally not set to work around some
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# backwards-compat issues. We do it manually.
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'user': settings.DATABASE_USER,
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'db': settings.DATABASE_NAME,
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'passwd': settings.DATABASE_PASSWORD,
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'conv': django_conversions,
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}
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if settings.DATABASE_HOST.startswith('/'):
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kwargs['unix_socket'] = settings.DATABASE_HOST
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else:
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kwargs['host'] = settings.DATABASE_HOST
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if settings.DATABASE_PORT:
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kwargs['port'] = int(settings.DATABASE_PORT)
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kwargs.update(self.options)
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self.connection = Database.connect(**kwargs)
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cursor = self.connection.cursor()
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if self.connection.get_server_info() >= '4.1' and not self.connection.character_set_name().startswith('utf8'):
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if hasattr(self.connection, 'charset'):
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# MySQLdb < 1.2.1 backwards-compat hacks.
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conn = self.connection
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cursor.execute("SET NAMES 'utf8'")
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cursor.execute("SET CHARACTER SET 'utf8'")
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to_str = lambda u, dummy=None, c=conn: c.literal(u.encode('utf-8'))
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conn.converter[unicode] = to_str
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else:
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self.connection.set_character_set('utf8')
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else:
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cursor = self.connection.cursor()
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return cursor
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def make_debug_cursor(self, cursor):
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return BaseDatabaseWrapper.make_debug_cursor(self, MysqlDebugWrapper(cursor))
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def _rollback(self):
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try:
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BaseDatabaseWrapper._rollback(self)
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except Database.NotSupportedError:
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pass
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def get_server_version(self):
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if not self.server_version:
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if not self._valid_connection():
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self.cursor()
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m = server_version_re.match(self.connection.get_server_info())
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if not m:
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raise Exception('Unable to determine MySQL version from version string %r' % self.connection.get_server_info())
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self.server_version = tuple([int(x) for x in m.groups()])
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return self.server_version
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@@ -1,14 +0,0 @@
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from django.conf import settings
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import os
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def runshell():
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args = ['']
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args += ["--user=%s" % settings.DATABASE_USER]
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if settings.DATABASE_PASSWORD:
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args += ["--password=%s" % settings.DATABASE_PASSWORD]
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if settings.DATABASE_HOST:
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args += ["--host=%s" % settings.DATABASE_HOST]
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if settings.DATABASE_PORT:
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args += ["--port=%s" % settings.DATABASE_PORT]
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args += [settings.DATABASE_NAME]
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os.execvp('mysql', args)
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@@ -1,28 +0,0 @@
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# This dictionary maps Field objects to their associated MySQL column
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# types, as strings. Column-type strings can contain format strings; they'll
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# be interpolated against the values of Field.__dict__ before being output.
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# If a column type is set to None, it won't be included in the output.
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DATA_TYPES = {
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'AutoField': 'integer AUTO_INCREMENT',
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'BooleanField': 'bool',
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'CharField': 'varchar(%(max_length)s)',
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'CommaSeparatedIntegerField': 'varchar(%(max_length)s)',
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'DateField': 'date',
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'DateTimeField': 'datetime',
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'DecimalField': 'numeric(%(max_digits)s, %(decimal_places)s)',
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'FileField': 'varchar(%(max_length)s)',
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'FilePathField': 'varchar(%(max_length)s)',
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'FloatField': 'double precision',
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'IntegerField': 'integer',
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'IPAddressField': 'char(15)',
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'NullBooleanField': 'bool',
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'OneToOneField': 'integer',
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'PhoneNumberField': 'varchar(20)',
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'PositiveIntegerField': 'integer UNSIGNED',
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'PositiveSmallIntegerField': 'smallint UNSIGNED',
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'SlugField': 'varchar(%(max_length)s)',
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'SmallIntegerField': 'smallint',
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'TextField': 'longtext',
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'TimeField': 'time',
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'USStateField': 'varchar(2)',
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}
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@@ -1,96 +0,0 @@
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from django.db.backends.mysql_old.base import DatabaseOperations
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from MySQLdb import ProgrammingError, OperationalError
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from MySQLdb.constants import FIELD_TYPE
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import re
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quote_name = DatabaseOperations().quote_name
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foreign_key_re = re.compile(r"\sCONSTRAINT `[^`]*` FOREIGN KEY \(`([^`]*)`\) REFERENCES `([^`]*)` \(`([^`]*)`\)")
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def get_table_list(cursor):
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"Returns a list of table names in the current database."
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cursor.execute("SHOW TABLES")
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return [row[0] for row in cursor.fetchall()]
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def get_table_description(cursor, table_name):
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"Returns a description of the table, with the DB-API cursor.description interface."
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cursor.execute("SELECT * FROM %s LIMIT 1" % quote_name(table_name))
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return cursor.description
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def _name_to_index(cursor, table_name):
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"""
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Returns a dictionary of {field_name: field_index} for the given table.
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Indexes are 0-based.
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"""
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return dict([(d[0], i) for i, d in enumerate(get_table_description(cursor, table_name))])
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def get_relations(cursor, table_name):
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"""
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Returns a dictionary of {field_index: (field_index_other_table, other_table)}
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representing all relationships to the given table. Indexes are 0-based.
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"""
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my_field_dict = _name_to_index(cursor, table_name)
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constraints = []
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relations = {}
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try:
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# This should work for MySQL 5.0.
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cursor.execute("""
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SELECT column_name, referenced_table_name, referenced_column_name
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FROM information_schema.key_column_usage
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WHERE table_name = %s
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AND table_schema = DATABASE()
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AND referenced_table_name IS NOT NULL
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AND referenced_column_name IS NOT NULL""", [table_name])
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constraints.extend(cursor.fetchall())
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except (ProgrammingError, OperationalError):
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# Fall back to "SHOW CREATE TABLE", for previous MySQL versions.
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# Go through all constraints and save the equal matches.
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cursor.execute("SHOW CREATE TABLE %s" % quote_name(table_name))
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for row in cursor.fetchall():
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pos = 0
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while True:
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match = foreign_key_re.search(row[1], pos)
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if match == None:
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break
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pos = match.end()
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constraints.append(match.groups())
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for my_fieldname, other_table, other_field in constraints:
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other_field_index = _name_to_index(cursor, other_table)[other_field]
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my_field_index = my_field_dict[my_fieldname]
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relations[my_field_index] = (other_field_index, other_table)
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return relations
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def get_indexes(cursor, table_name):
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"""
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Returns a dictionary of fieldname -> infodict for the given table,
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where each infodict is in the format:
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{'primary_key': boolean representing whether it's the primary key,
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'unique': boolean representing whether it's a unique index}
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"""
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cursor.execute("SHOW INDEX FROM %s" % quote_name(table_name))
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indexes = {}
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for row in cursor.fetchall():
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indexes[row[4]] = {'primary_key': (row[2] == 'PRIMARY'), 'unique': not bool(row[1])}
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return indexes
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DATA_TYPES_REVERSE = {
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FIELD_TYPE.BLOB: 'TextField',
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FIELD_TYPE.CHAR: 'CharField',
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FIELD_TYPE.DECIMAL: 'DecimalField',
|
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FIELD_TYPE.DATE: 'DateField',
|
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FIELD_TYPE.DATETIME: 'DateTimeField',
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FIELD_TYPE.DOUBLE: 'FloatField',
|
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FIELD_TYPE.FLOAT: 'FloatField',
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FIELD_TYPE.INT24: 'IntegerField',
|
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FIELD_TYPE.LONG: 'IntegerField',
|
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FIELD_TYPE.LONGLONG: 'IntegerField',
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FIELD_TYPE.SHORT: 'IntegerField',
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FIELD_TYPE.STRING: 'TextField',
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FIELD_TYPE.TIMESTAMP: 'DateTimeField',
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FIELD_TYPE.TINY: 'IntegerField',
|
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FIELD_TYPE.TINY_BLOB: 'TextField',
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FIELD_TYPE.MEDIUM_BLOB: 'TextField',
|
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FIELD_TYPE.LONG_BLOB: 'TextField',
|
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FIELD_TYPE.VAR_STRING: 'CharField',
|
||||
}
|
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@@ -140,7 +140,6 @@ def create_test_db(verbosity=1, autoclobber=False):
|
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'postgresql': get_postgresql_create_suffix,
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'postgresql_psycopg2': get_postgresql_create_suffix,
|
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'mysql': get_mysql_create_suffix,
|
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'mysql_old': get_mysql_create_suffix,
|
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}.get(settings.DATABASE_ENGINE, lambda: '')()
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if settings.TEST_DATABASE_NAME:
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TEST_DATABASE_NAME = settings.TEST_DATABASE_NAME
|
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|
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@@ -278,8 +278,8 @@ DATABASE_ENGINE
|
||||
Default: ``''`` (Empty string)
|
||||
|
||||
The database backend to use. The build-in database backends are
|
||||
``'postgresql_psycopg2'``, ``'postgresql'``, ``'mysql'``, ``'mysql_old'``,
|
||||
``'sqlite3'``, and ``'oracle'``.
|
||||
``'postgresql_psycopg2'``, ``'postgresql'``, ``'mysql'``, ``'sqlite3'``, and
|
||||
``'oracle'``.
|
||||
|
||||
In the Django development version, you can use a database backend that doesn't
|
||||
ship with Django by setting ``DATABASE_ENGINE`` to a fully-qualified path (i.e.
|
||||
@@ -1029,7 +1029,7 @@ The character set encoding used to create the test database. The value of this
|
||||
string is passed directly through to the database, so its format is
|
||||
backend-specific.
|
||||
|
||||
Supported for the PostgreSQL_ (``postgresql``, ``postgresql_psycopg2``) and MySQL_ (``mysql``, ``mysql_old``) backends.
|
||||
Supported for the PostgreSQL_ (``postgresql``, ``postgresql_psycopg2``) and MySQL_ (``mysql``) backends.
|
||||
|
||||
.. _PostgreSQL: http://www.postgresql.org/docs/8.2/static/multibyte.html
|
||||
.. _MySQL: http://www.mysql.org/doc/refman/5.0/en/charset-database.html
|
||||
@@ -1044,8 +1044,8 @@ Default: ``None``
|
||||
The collation order to use when creating the test database. This value is
|
||||
passed directly to the backend, so its format is backend-specific.
|
||||
|
||||
Only supported for ``mysql`` and ``mysql_old`` backends (see `section 10.3.2`_
|
||||
of the MySQL manual for details).
|
||||
Only supported for the ``mysql`` backend (see `section 10.3.2`_ of the MySQL
|
||||
manual for details).
|
||||
|
||||
.. _section 10.3.2: http://www.mysql.org/doc/refman/5.0/en/charset-database.html
|
||||
|
||||
|
||||
@@ -58,7 +58,7 @@ __test__ = {'API_TESTS': """
|
||||
|
||||
# Database flushing does not work on MySQL with the default storage engine
|
||||
# because it requires transaction support.
|
||||
if settings.DATABASE_ENGINE not in ('mysql', 'mysql_old'):
|
||||
if settings.DATABASE_ENGINE != 'mysql':
|
||||
__test__['API_TESTS'] += \
|
||||
"""
|
||||
# Reset the database representation of this app. This will delete all data.
|
||||
|
||||
@@ -380,7 +380,7 @@ FieldError: Join on field 'headline' not permitted.
|
||||
"""}
|
||||
|
||||
|
||||
if settings.DATABASE_ENGINE not in ('mysql', 'mysql_old'):
|
||||
if settings.DATABASE_ENGINE != 'mysql':
|
||||
__test__['API_TESTS'] += r"""
|
||||
# grouping and backreferences
|
||||
>>> Article.objects.filter(headline__regex=r'b(.).*b\1')
|
||||
|
||||
@@ -25,7 +25,7 @@ from django.conf import settings
|
||||
|
||||
building_docs = getattr(settings, 'BUILDING_DOCS', False)
|
||||
|
||||
if building_docs or settings.DATABASE_ENGINE not in ('mysql', 'mysql_old'):
|
||||
if building_docs or settings.DATABASE_ENGINE != 'mysql':
|
||||
__test__['API_TESTS'] += """
|
||||
# the default behavior is to autocommit after each save() action
|
||||
>>> def create_a_reporter_then_fail(first, last):
|
||||
|
||||
Reference in New Issue
Block a user