criteria-api

So I've seen all threads on stack overflow on similar subjects but I've found no solution to my problem. I'm trying to create a Criteria query and I get this SQL (1st SQL, simplified): SELECT latitude FROM stations WHERE (ABS(latitude - 45.893227) <= 0.2) but it gives me this error: java.sql.SQLDataException: The resulting value is outside the range for the data type DECIMAL/NUMERIC(31,31). That's because my latitude is of type varchar(25). So this fixes it (2nd SQL): SELECT latitude FROM stations WHERE (ABS(CAST(latitude AS DECIMAL) - 45.893227) <= 0.2) But now I need to do it in Criteria

I'm trying to express a SQL query using NHibernate's Criteria API, and I'm running into difficulty because I'm thinking in a database-centric way while NHibernate is object-centric. SQL (works great): select outerT.id, outerT.col1, outerT.col2, outerT.col3 from tbl outerT inner join (select max(innerT.id) from tbl innerT group by innerT.col1) grpT on outerT.id = grpT.id Essentially, this is a self-join of a table against a subset of itself. I suppose I could try turning the self-join into a restriction: select outerT.id, outerT.col1, outerT.col2, outerT.col3 from tbl outerT where outerT.id in

Is there a way with JPA criteria queries to order on class ? Imagine the following domain objects: abstract class Hobby { ... } class Coding extends Hobby { ... } class Gaming extends Hobby { ... } Using regular QL I was able to do from Hobby h order by h.class But when I apply the same logic on a criteria query, the runtime exception "unknown attribute" occurs. CriteriaQuery<Hobby> criteriaQuery = builder.createQuery(Hobby.class); Root<Hobby> hobbyRoot = criteriaQuery.from(Hobby.class); criteriaQuery.orderBy(builder.asc(hobbyRoot.get("class")); List<Hobby> hobbies = entityManager.createQuery

I have a Bean like this Class TestA { Map<String,TestB> testBMap; } Class TestB { String data; ... } I want to fetch the TestA data along with the map testBMap where key ='test1' . How can i do this using Hibernate. The key must be the value of one of the persistent fields of TestB (let's says this field is names "foo"), so this code should work : Criteria criteria = session.createCriteria(TestA.class, "a"); criteria.createAlias("a.testBMap", "b"); criteria.add(Restrictions.eq("b.foo", "test1")); criteria.setFetchMode("a.testBMap", FetchMode.JOIN); return criteria.list(); YoMan78 In my case

I want to write a method that returns a list of last added objects grouped by field 'serviceId'. The following HQL works, but I want to write this using Criteria API: FROM Notification WHERE date IN (SELECT MAX(date) FROM Notification GROUP BY serviceId) ORDER BY date ASC Something like this: Criteria crit = session.createCriteria(Notification.class); crit.add(Restrictions.in("date", <MAX dates>)); criteria.addOrder(Order.desc("date")); Thanks in advance. EDIT: Now I need a similar query that works using eclipselink API =/ Basically, I need the last N rows (max date), which status is one of