getListContentForData function added to lists helper.
It allows to manually set a list of entities which is to be displayed on the view. Previously, the only function was getListContent, but it retrived data on its own by a single query. The new function can be useful whenever it is impossible or very awkward to obtain entities in such a way (for example more sophisticated SQL statements).
Additionally, the getListContent function is reconstructed so that it collects the data first and then calls getListContentForData.
import sys, time
from django.conf import settings
from django.core import management
from django.db.backends.creation import BaseDatabaseCreation
TEST_DATABASE_PREFIX = 'test_'
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)',
'BooleanField': 'NUMBER(1) CHECK (%(qn_column)s IN (0,1))',
'CharField': 'NVARCHAR2(%(max_length)s)',
'CommaSeparatedIntegerField': 'VARCHAR2(%(max_length)s)',
'DateField': 'DATE',
'DateTimeField': 'TIMESTAMP',
'DecimalField': 'NUMBER(%(max_digits)s, %(decimal_places)s)',
'FileField': 'NVARCHAR2(%(max_length)s)',
'FilePathField': 'NVARCHAR2(%(max_length)s)',
'FloatField': 'DOUBLE PRECISION',
'IntegerField': 'NUMBER(11)',
'IPAddressField': 'VARCHAR2(15)',
'NullBooleanField': 'NUMBER(1) CHECK ((%(qn_column)s IN (0,1)) OR (%(qn_column)s IS NULL))',
'OneToOneField': 'NUMBER(11)',
'PositiveIntegerField': 'NUMBER(11) CHECK (%(qn_column)s >= 0)',
'PositiveSmallIntegerField': 'NUMBER(11) CHECK (%(qn_column)s >= 0)',
'SlugField': 'NVARCHAR2(50)',
'SmallIntegerField': 'NUMBER(11)',
'TextField': 'NCLOB',
'TimeField': 'TIMESTAMP',
'URLField': 'VARCHAR2(%(max_length)s)',
}
remember = {}
def _create_test_db(self, verbosity=1, autoclobber=False):
TEST_DATABASE_NAME = self._test_database_name(settings)
TEST_DATABASE_USER = self._test_database_user(settings)
TEST_DATABASE_PASSWD = self._test_database_passwd(settings)
TEST_DATABASE_TBLSPACE = self._test_database_tblspace(settings)
TEST_DATABASE_TBLSPACE_TMP = self._test_database_tblspace_tmp(settings)
parameters = {
'dbname': TEST_DATABASE_NAME,
'user': TEST_DATABASE_USER,
'password': TEST_DATABASE_PASSWD,
'tblspace': TEST_DATABASE_TBLSPACE,
'tblspace_temp': TEST_DATABASE_TBLSPACE_TMP,
}
self.remember['user'] = settings.DATABASE_USER
self.remember['passwd'] = settings.DATABASE_PASSWORD
cursor = self.connection.cursor()
if self._test_database_create(settings):
if verbosity >= 1:
print 'Creating test database...'
try:
self._execute_test_db_creation(cursor, parameters, verbosity)
except Exception, e:
sys.stderr.write("Got an error creating the test database: %s\n" % e)
if not autoclobber:
confirm = raw_input("It appears the test database, %s, already exists. Type 'yes' to delete it, or 'no' to cancel: " % TEST_DATABASE_NAME)
if autoclobber or confirm == 'yes':
try:
if verbosity >= 1:
print "Destroying old test database..."
self._execute_test_db_destruction(cursor, parameters, verbosity)
if verbosity >= 1:
print "Creating test database..."
self._execute_test_db_creation(cursor, parameters, verbosity)
except Exception, e:
sys.stderr.write("Got an error recreating the test database: %s\n" % e)
sys.exit(2)
else:
print "Tests cancelled."
sys.exit(1)
if self._test_user_create(settings):
if verbosity >= 1:
print "Creating test user..."
try:
self._create_test_user(cursor, parameters, verbosity)
except Exception, e:
sys.stderr.write("Got an error creating the test user: %s\n" % e)
if not autoclobber:
confirm = raw_input("It appears the test user, %s, already exists. Type 'yes' to delete it, or 'no' to cancel: " % TEST_DATABASE_USER)
if autoclobber or confirm == 'yes':
try:
if verbosity >= 1:
print "Destroying old test user..."
self._destroy_test_user(cursor, parameters, verbosity)
if verbosity >= 1:
print "Creating test user..."
self._create_test_user(cursor, parameters, verbosity)
except Exception, e:
sys.stderr.write("Got an error recreating the test user: %s\n" % e)
sys.exit(2)
else:
print "Tests cancelled."
sys.exit(1)
settings.DATABASE_USER = TEST_DATABASE_USER
settings.DATABASE_PASSWORD = TEST_DATABASE_PASSWD
return settings.DATABASE_NAME
def _destroy_test_db(self, test_database_name, verbosity=1):
"""
Destroy a test database, prompting the user for confirmation if the
database already exists. Returns the name of the test database created.
"""
TEST_DATABASE_NAME = self._test_database_name(settings)
TEST_DATABASE_USER = self._test_database_user(settings)
TEST_DATABASE_PASSWD = self._test_database_passwd(settings)
TEST_DATABASE_TBLSPACE = self._test_database_tblspace(settings)
TEST_DATABASE_TBLSPACE_TMP = self._test_database_tblspace_tmp(settings)
settings.DATABASE_USER = self.remember['user']
settings.DATABASE_PASSWORD = self.remember['passwd']
parameters = {
'dbname': TEST_DATABASE_NAME,
'user': TEST_DATABASE_USER,
'password': TEST_DATABASE_PASSWD,
'tblspace': TEST_DATABASE_TBLSPACE,
'tblspace_temp': TEST_DATABASE_TBLSPACE_TMP,
}
self.remember['user'] = settings.DATABASE_USER
self.remember['passwd'] = settings.DATABASE_PASSWORD
cursor = self.connection.cursor()
time.sleep(1) # To avoid "database is being accessed by other users" errors.
if self._test_user_create(settings):
if verbosity >= 1:
print 'Destroying test user...'
self._destroy_test_user(cursor, parameters, verbosity)
if self._test_database_create(settings):
if verbosity >= 1:
print 'Destroying test database tables...'
self._execute_test_db_destruction(cursor, parameters, verbosity)
self.connection.close()
def _execute_test_db_creation(self, cursor, parameters, verbosity):
if verbosity >= 2:
print "_create_test_db(): dbname = %s" % parameters['dbname']
statements = [
"""CREATE TABLESPACE %(tblspace)s
DATAFILE '%(tblspace)s.dbf' SIZE 20M
REUSE AUTOEXTEND ON NEXT 10M MAXSIZE 100M
""",
"""CREATE TEMPORARY TABLESPACE %(tblspace_temp)s
TEMPFILE '%(tblspace_temp)s.dbf' SIZE 20M
REUSE AUTOEXTEND ON NEXT 10M MAXSIZE 100M
""",
]
self._execute_statements(cursor, statements, parameters, verbosity)
def _create_test_user(self, cursor, parameters, verbosity):
if verbosity >= 2:
print "_create_test_user(): username = %s" % parameters['user']
statements = [
"""CREATE USER %(user)s
IDENTIFIED BY %(password)s
DEFAULT TABLESPACE %(tblspace)s
TEMPORARY TABLESPACE %(tblspace_temp)s
""",
"""GRANT CONNECT, RESOURCE TO %(user)s""",
]
self._execute_statements(cursor, statements, parameters, verbosity)
def _execute_test_db_destruction(self, cursor, parameters, verbosity):
if verbosity >= 2:
print "_execute_test_db_destruction(): dbname=%s" % parameters['dbname']
statements = [
'DROP TABLESPACE %(tblspace)s INCLUDING CONTENTS AND DATAFILES CASCADE CONSTRAINTS',
'DROP TABLESPACE %(tblspace_temp)s INCLUDING CONTENTS AND DATAFILES CASCADE CONSTRAINTS',
]
self._execute_statements(cursor, statements, parameters, verbosity)
def _destroy_test_user(self, cursor, parameters, verbosity):
if verbosity >= 2:
print "_destroy_test_user(): user=%s" % parameters['user']
print "Be patient. This can take some time..."
statements = [
'DROP USER %(user)s CASCADE',
]
self._execute_statements(cursor, statements, parameters, verbosity)
def _execute_statements(self, cursor, statements, parameters, verbosity):
for template in statements:
stmt = template % parameters
if verbosity >= 2:
print stmt
try:
cursor.execute(stmt)
except Exception, err:
sys.stderr.write("Failed (%s)\n" % (err))
raise
def _test_database_name(self, settings):
name = TEST_DATABASE_PREFIX + settings.DATABASE_NAME
try:
if settings.TEST_DATABASE_NAME:
name = settings.TEST_DATABASE_NAME
except AttributeError:
pass
except:
raise
return name
def _test_database_create(self, settings):
name = True
try:
if settings.TEST_DATABASE_CREATE:
name = True
else:
name = False
except AttributeError:
pass
except:
raise
return name
def _test_user_create(self, settings):
name = True
try:
if settings.TEST_USER_CREATE:
name = True
else:
name = False
except AttributeError:
pass
except:
raise
return name
def _test_database_user(self, ettings):
name = TEST_DATABASE_PREFIX + settings.DATABASE_NAME
try:
if settings.TEST_DATABASE_USER:
name = settings.TEST_DATABASE_USER
except AttributeError:
pass
except:
raise
return name
def _test_database_passwd(self, settings):
name = PASSWORD
try:
if settings.TEST_DATABASE_PASSWD:
name = settings.TEST_DATABASE_PASSWD
except AttributeError:
pass
except:
raise
return name
def _test_database_tblspace(self, settings):
name = TEST_DATABASE_PREFIX + settings.DATABASE_NAME
try:
if settings.TEST_DATABASE_TBLSPACE:
name = settings.TEST_DATABASE_TBLSPACE
except AttributeError:
pass
except:
raise
return name
def _test_database_tblspace_tmp(self, settings):
name = TEST_DATABASE_PREFIX + settings.DATABASE_NAME + '_temp'
try:
if settings.TEST_DATABASE_TBLSPACE_TMP:
name = settings.TEST_DATABASE_TBLSPACE_TMP
except AttributeError:
pass
except:
raise
return name