def create_random_table(self, table_name, min_number_of_cols,
max_number_of_cols, allowed_storage_formats):
'''Create and return a Table with a random number of cols.'''
col_count = randint(min_number_of_cols, max_number_of_cols)
storage_format = choice(allowed_storage_formats)
table = Table(table_name)
table.storage_format = storage_format
for col_idx in xrange(col_count):
col_type = choice(TYPES)
col_type = choice(
filter(lambda type_: issubclass(type_, col_type), EXACT_TYPES))
if issubclass(col_type,
VarChar) and not issubclass(col_type, String):
col_type = get_varchar_class(randint(1, VarChar.MAX))
elif issubclass(col_type,
Char) and not issubclass(col_type, String):
col_type = get_char_class(randint(1, Char.MAX))
elif issubclass(col_type, Decimal):
max_digits = randint(1, Decimal.MAX_DIGITS)
col_type = get_decimal_class(max_digits,
randint(1, max_digits))
col = Column(
table, '%s_col_%s' % (col_type.__name__.lower(), col_idx + 1),
col_type)
table.cols.append(col)
return table
def create_random_table(self,
table_name,
min_number_of_cols,
max_number_of_cols,
allowed_storage_formats):
'''Create and return a Table with a random number of cols.'''
col_count = randint(min_number_of_cols, max_number_of_cols)
storage_format = choice(allowed_storage_formats)
table = Table(table_name)
table.storage_format = storage_format
for col_idx in xrange(col_count):
col_type = choice(TYPES)
col_type = choice(filter(lambda type_: issubclass(type_, col_type), EXACT_TYPES))
if issubclass(col_type, VarChar) and not issubclass(col_type, String):
col_type = get_varchar_class(randint(1, VarChar.MAX))
elif issubclass(col_type, Char) and not issubclass(col_type, String):
col_type = get_char_class(randint(1, Char.MAX))
elif issubclass(col_type, Decimal):
max_digits = randint(1, Decimal.MAX_DIGITS)
col_type = get_decimal_class(max_digits, randint(1, max_digits))
col = Column(
table,
'%s_col_%s' % (col_type.__name__.lower(), col_idx + 1),
col_type)
table.cols.append(col)
return table
def parse_data_type(self, type_name, type_size):
if type_name in ('DECIMAL', 'NUMERIC'):
return get_decimal_class(*type_size)
if type_name == 'CHAR':
return get_char_class(*type_size)
if type_name == 'VARCHAR':
if type_size and type_size[0] <= VarChar.MAX:
return get_varchar_class(*type_size)
type_name = 'STRING'
return self.TYPES_BY_NAME[type_name]
