Question

I’m Using Hibernate with JPA and MySql.

SQL Tabel have ClassTable—->TimeTable—–>Skillset—–>Course

the above arrow marks are showing one to many Relation ship.

Now in my Java code …

public List<ClassTableVO> getClassTables() {
    return entityManager.createQuery("from ClassTableVO",
            ClassTableVO.class).getResultList();
}

But my requirement is Count the courses, How many in the ClassTable.

For example ClassTabel Have 10 record and 4 records java and 6 records flex now i want to these count and storing one integer variable …

Answer 1

Here you go,

public int getRecordCount(String subject) {
    return session.createCriteria(ClassTableVO.class)
            .add(Restrictions.eq("subject", subject)).getResultList()
            .size();
}