hi all.
i am new to hibernate.I am using criteria for fetching data from derby DB and one more thing i am using Annotation.
Now my problem is i have created a table named SCHOOL from two classes Named School.java and SchoolDetail.java.
in School.java class there are 3 fields schoolId(generated value),schoolName,and instance of SchoolDetail.
and there are 3 fields in SchoolDetail.java schoolAddress,isPrivate,studentCount.
now i am using the following code to fetch data.

Criteria crit = session.createCriteria(School.class);
crit.add(Restrictions.eq("studentCount", 1500));
List<School> schoolList = crit.list();

its getting an exception because studentCount field belongs to SchoolDetail.java .
can anyone please help in this case....

Thanx in advance..