/bangkokhotel/lib/python2.5/site-packages/django/db/backends/sqlite3/creation.py
Python | 89 lines | 73 code | 8 blank | 8 comment | 13 complexity | 851f03302d118f1f846358acfcc68c25 MD5 | raw file
1import os
2import sys
3from django.db.backends.creation import BaseDatabaseCreation
4
5class DatabaseCreation(BaseDatabaseCreation):
6 # SQLite doesn't actually support most of these types, but it "does the right
7 # thing" given more verbose field definitions, so leave them as is so that
8 # schema inspection is more useful.
9 data_types = {
10 'AutoField': 'integer',
11 'BooleanField': 'bool',
12 'CharField': 'varchar(%(max_length)s)',
13 'CommaSeparatedIntegerField': 'varchar(%(max_length)s)',
14 'DateField': 'date',
15 'DateTimeField': 'datetime',
16 'DecimalField': 'decimal',
17 'FileField': 'varchar(%(max_length)s)',
18 'FilePathField': 'varchar(%(max_length)s)',
19 'FloatField': 'real',
20 'IntegerField': 'integer',
21 'BigIntegerField': 'bigint',
22 'IPAddressField': 'char(15)',
23 'GenericIPAddressField': 'char(39)',
24 'NullBooleanField': 'bool',
25 'OneToOneField': 'integer',
26 'PositiveIntegerField': 'integer unsigned',
27 'PositiveSmallIntegerField': 'smallint unsigned',
28 'SlugField': 'varchar(%(max_length)s)',
29 'SmallIntegerField': 'smallint',
30 'TextField': 'text',
31 'TimeField': 'time',
32 }
33
34 def sql_for_pending_references(self, model, style, pending_references):
35 "SQLite3 doesn't support constraints"
36 return []
37
38 def sql_remove_table_constraints(self, model, references_to_delete, style):
39 "SQLite3 doesn't support constraints"
40 return []
41
42 def _get_test_db_name(self):
43 test_database_name = self.connection.settings_dict['TEST_NAME']
44 if test_database_name and test_database_name != ':memory:':
45 return test_database_name
46 return ':memory:'
47
48 def _create_test_db(self, verbosity, autoclobber):
49 test_database_name = self._get_test_db_name()
50 if test_database_name != ':memory:':
51 # Erase the old test database
52 if verbosity >= 1:
53 print "Destroying old test database '%s'..." % self.connection.alias
54 if os.access(test_database_name, os.F_OK):
55 if not autoclobber:
56 confirm = raw_input("Type 'yes' if you would like to try deleting the test database '%s', or 'no' to cancel: " % test_database_name)
57 if autoclobber or confirm == 'yes':
58 try:
59 os.remove(test_database_name)
60 except Exception, e:
61 sys.stderr.write("Got an error deleting the old test database: %s\n" % e)
62 sys.exit(2)
63 else:
64 print "Tests cancelled."
65 sys.exit(1)
66 return test_database_name
67
68 def _destroy_test_db(self, test_database_name, verbosity):
69 if test_database_name and test_database_name != ":memory:":
70 # Remove the SQLite database file
71 os.remove(test_database_name)
72
73 def set_autocommit(self):
74 self.connection.connection.isolation_level = None
75
76 def test_db_signature(self):
77 """
78 Returns a tuple that uniquely identifies a test database.
79
80 This takes into account the special cases of ":memory:" and "" for
81 SQLite since the databases will be distinct despite having the same
82 TEST_NAME. See http://www.sqlite.org/inmemorydb.html
83 """
84 settings_dict = self.connection.settings_dict
85 test_dbname = self._get_test_db_name()
86 sig = [self.connection.settings_dict['NAME']]
87 if test_dbname == ':memory:':
88 sig.append(self.connection.alias)
89 return tuple(sig)