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"""
Helper module to populate a dummy Cassandra tables with data.
"""
from tests.integration.datatype_utils import PRIMITIVE_DATATYPES, get_sample
def create_table_with_all_types(table_name, session, N):
"""
Method that given a table_name and session construct a table that contains
all possible primitive types.
:param table_name: Name of table to create
:param session: session to use for table creation
:param N: the number of items to insert into the table
:return: a list of column names
"""
# create table
alpha_type_list = ["primkey int PRIMARY KEY"]
col_names = ["primkey"]
start_index = ord('a')
for i, datatype in enumerate(PRIMITIVE_DATATYPES):
alpha_type_list.append("{0} {1}".format(chr(start_index + i), datatype))
col_names.append(chr(start_index + i))
session.execute("CREATE TABLE {0} ({1})".format(
table_name, ', '.join(alpha_type_list)), timeout=120)
# create the input
for key in range(N):
params = get_all_primitive_params(key)
# insert into table as a simple statement
columns_string = ', '.join(col_names)
placeholders = ', '.join(["%s"] * len(col_names))
session.execute("INSERT INTO {0} ({1}) VALUES ({2})".format(
table_name, columns_string, placeholders), params, timeout=120)
return col_names
def get_all_primitive_params(key):
"""
Simple utility method used to give back a list of all possible primitive data sample types.
"""
params = [key]
for datatype in PRIMITIVE_DATATYPES:
# Also test for empty strings
if key == 1 and datatype == 'ascii':
params.append('')
else:
params.append(get_sample(datatype))
return params
def get_primitive_datatypes():
return ['int'] + list(PRIMITIVE_DATATYPES)
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