How to set parameters for a Named Query

hibernate, jpa

Solution

As @DataNucleus said, LIMIT is not a valid keyword in JPQL. That's not the way to specify how many rows to return. This is how you do it:

@NamedQuery(name = "StudyplanCategory.findByStatusAndLimit", 
        query = "SELECT s FROM StudyplanCategory s WHERE 
                    s.status =:status")

And this would be the code to call the named query:

Query query = entityManager.createNamedQuery("StudyplanCategory.findByStatusAndLimit");
int end=(start*pageNumber);
query.setParameter("status", status);
query.setFirstResult(start);
query.setMaxResults(end - start);
return (List<StudyplanCategory>) query.getResultList();

Problem

Hi I have a Named Query ``` @NamedQuery(name = "StudyplanCategory.findByStatusAndLimit", query = "SELECT s FROM StudyplanCategory s WHERE s.status =:status LIMIT s.start=:start,s.end=end") ``` I want to set the limit like this: ``` @NamedQuery(name = "StudyplanCategory.findByStatusAndLimit", query = "SELECT s FROM StudyplanCategory s WHERE s.status =:status LIMIT s.start=:start,s.end=end") ``` But this is showing error at the start up of the Server. I am using the below code to call the query in the DAO class: ``` Query query = entityManager.createNamedQuery("StudyplanCategory.findByStatusAndLimit"); int end=(start*pageNumber); query.setParameter("status", status); query.setParameter("start", start); query.setParameter("end", end); return (List<StudyplanCategory>) query.getResultList(); ``` Start and End Parameters needs to be set. Please Help.

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