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Commit 7af45fb1bea0aa51f8baf3b8f1dbc0f45f1eff59

Authored by Vanderson Silva
1 parent 1537c49d
Exists in master

inclusao dos metodos findJPQL e findCriteria genérico integrado ao 

mecanismo de paginação do Demoiselle 2
Showing 1 changed file with 44 additions and 0 deletions   Show diff stats
impl/extension/jpa/src/main/java/br/gov/frameworkdemoiselle/template/JPACrud.java
  Diff comments   View file @7af45fb
... ... @@ -48,6 +48,7 @@ import javax.persistence.EntityManager;
48 48 import javax.persistence.Enumerated;
49 49 import javax.persistence.Query;
50 50 import javax.persistence.TransactionRequiredException;
  51 +import javax.persistence.TypedQuery;
51 52 import javax.persistence.criteria.CriteriaBuilder;
52 53 import javax.persistence.criteria.CriteriaQuery;
53 54 import javax.persistence.criteria.Predicate;
... ... @@ -174,6 +175,49 @@ public class JPACrud<T, I> implements Crud<T, I> {
174 175 List<T> lista = query.getResultList();
175 176 return lista;
176 177 }
  178 +
  179 + /**
  180 + * Perform a paged query by JPQL
  181 + * @param jpql
  182 + * @return
  183 + */
  184 + public List<T> findJPQL(String jpql) {
  185 + TypedQuery<T> listQuery = getEntityManager().createQuery(jpql, getBeanClass());
  186 + Pagination pagination = getPagination();
  187 + if (pagination != null) {
  188 + CriteriaBuilder builder = getEntityManager().getCriteriaBuilder();
  189 + CriteriaQuery<Long> countQuery = builder.createQuery(Long.class);
  190 + countQuery.select(builder.count(countQuery.from(getBeanClass())));
  191 + getEntityManager().createQuery(jpql, getBeanClass());
  192 + pagination.setTotalResults((int) (getEntityManager().createQuery(countQuery).getSingleResult() + 0));
  193 + listQuery.setFirstResult(pagination.getFirstResult());
  194 + listQuery.setMaxResults(pagination.getPageSize());
  195 + }
  196 + return listQuery.getResultList();
  197 + }
  198 +
  199 + /**
  200 + * Perform a paged query by CriteriaQuery
  201 + * @param jpql
  202 + * @return
  203 + */
  204 + public List<T> findCriteria(CriteriaQuery<T> select) {
  205 + CriteriaBuilder builder = getEntityManager().getCriteriaBuilder();
  206 +
  207 + CriteriaQuery<Long> countQuery = builder.createQuery(Long.class);
  208 + countQuery.select(builder.count(countQuery.from(getBeanClass())));
  209 + getEntityManager().createQuery(countQuery);
  210 +
  211 + Pagination p = getPagination();
  212 + p.setTotalResults((int) (getEntityManager().createQuery(countQuery).getSingleResult() + 0));
  213 +
  214 + TypedQuery<T> listQuery = getEntityManager().createQuery(select);
  215 + listQuery.setFirstResult(p.getFirstResult());
  216 + listQuery.setMaxResults(p.getPageSize());
  217 +
  218 + return listQuery.getResultList();
  219 + }
  220 +
177 221  
178 222 /**
179 223 * Retrieves the number of persisted objects for the current class type.
... ...