java - Aggregate function on composite user type -


i have composite user type represents monetary amount. type spans 2 columns.

-amount -currency

when creating hql query performs aggregate function "avg" on property using composite user type exception thrown. reason seems avgfunction cannot operate types have multiple columns.

is there way use compositeusertype in aggregate functions?

thanks in advance , best regards
stathis alexopoulos

your query doesn't make sense. average of these 3 rows?

amount    currency 5         usd 10        eur 15        yen

you may average amounts , neglect currency:

select avg(bill.fullamount.amount) billbean bill

but can't average monetary amounts (i.e. tuple [amount, currency]).


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