Cassandra: create CompositeType column - cassandra

Question

Im new to cassandra and Im trying to create a schema that will allow me to have a row as
users: {
name: <value>,
...
phone_numbers:1: <value>,
phone_numbers:2: <value>,
...
phone_numbers: <value>
}
I've been reading up about Composite Columns, and have only been able to find examples where the primary key is a composite. So is it possible to have the above in one CF?
My attempt was:-
create column family users with comparator=AsciiType
and key_validation_class=AsciiType
and column_metadata=[
{column_name: name, validation_class: AsciiType, index_type: KEYS},
{column_name: phone_numbers, validation_class: CompositeType(AsciiType, IntegerType), index_type: KEYS}];
the above fails.
any help is appreciated
cheers

Answer 1

CompositeType in cassandra can be used either as comparator [Type of column name] or key_validation_class [Type of row key] but not as default_validation_class [Type of the column value]
create column family users with
comparator='CompositeType(UTF8Type, IntegerType)'
and key_validation_class='UTF8Type'
Should work for you. I have shared a detailed post on Composite Types in cassandra

Answer 2

In cql 3 you could declare it as: (using type ascii for sake of simplicity)
create table users (user ascii,phoneid ascii,phonenumber ascii,
primary key(user,phonenumber)) with compact storage;
fill it as
insert into users (user,phoneid,phonenumber values ('john smith','home','555-121345')
insert into users (user,phoneid,phonenumber values ('john smith','office','555-121346')
and retrieve it as
select * from users where user = 'john smith'
user,phoneid,phonenumber
'john smith','home','555-121345'
'john smith','office','555-121346'
Hope it helps