Hibernate - HQL pagination

Question

This is a problem similar to: HQL - row identifier for pagination

I\'m trying to implement pagination using HQL. I have a PostgreSQL database.

int el         


        

Answer 1

i'm using this solution:

/**
 * @param limitPerPage
 * @param page
 * @return
 */
public List searchByPage(int limitPerPage, int page, String entity) {
    String sql = "SELECT t FROM " + entity + " t";
    Query query = em.createQuery(sql)
            .setFirstResult(calculateOffset(page, limitPerPage))
            .setMaxResults(limitPerPage);
    return query.getResultList();
}

/**
 * @param page
 * @return
 */
private int calculateOffset(int page, int limit) {
    return ((limit * page) - limit);
}

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