Hibernation criteria Request for external subqueries

Question

I have a requirement to convert the following SQL query to a criteria query. There is only one table and note that this is not a case for self-join.

SELECT atable.c1 AS ac1, btable.c1 as bc1 
  FROM (
       SELECT a.c1 
         FROM table_child a 
        WHERE a.c2='XXX') atable 
       LEFT OUTER JOIN (
           SELECT b.c1 
             FROM table_child b 
            WHERE b.c3 ='YYYYY') btable 
       ON atable.c1 = btable.c1 

I know how to use DetachedCriteriawith org.hibernate.criterion.Subqueriesto do things like IN(), NOT EXISTS()etc. But the class SubQueriesseems to be mainly related to the sentence WHERE.

How to use SubQuery to perform a join, as shown in the above SQL query. I need to do this using the Hibernation Criteria query.

Thank.