def __init__(self, db_file=None):
Database._singleton is None or util.throw('database already created! ( %s )' % Database._singleton.db_file)
Database._singleton = self
if db_file is not None:
self.db_fd = None
self.db_file = db_file
else:
self.db_fd, self.db_file = tempfile.mkstemp()
print 'db [%s]' % self.db_file
if not os.path.exists(os.path.dirname(self.db_file)):
print ' (+) dir %s' % os.path.dirname(self.db_file)
os.makedirs(os.path.dirname(self.db_file))
self.connection = None
self.cursor = None
def retrieve(table, oid):
row = table.select('json').where(oid=oid).fetch_one()
row is not None or util.throw('unknown oid ( %s )!' % oid)
return util.Object(row['json'])
def execute(self):
Database.singleton() is not None or util.throw('database not created!')
return Database.singleton().execute(self)
def fetch_one(self):
Database.singleton() is not None or util.throw('database not created!')
return Database.singleton().execute(self).fetch_one(*self.columns)