Rama postgres

Fusión rama postgres con rama3

src/main/java/es/uva/inf/tfg/ginquin/smellswisdom/services/impl/UserDao.java

 package es.uva.inf.tfg.ginquin.smellswisdom.services.impl;
 
+import java.util.List;
+
 import javax.persistence.EntityManager;
 import javax.persistence.PersistenceContext;
+import javax.persistence.Query;
 
 import org.springframework.stereotype.Repository;
 import org.springframework.transaction.annotation.Transactional;
 
+import es.uva.inf.tfg.ginquin.smellswisdom.domain.Authority;
 import es.uva.inf.tfg.ginquin.smellswisdom.domain.User;
 
 @Repository
@@ -14,6 +18,13 @@ public class UserDao {
 	@PersistenceContext
 	private EntityManager em;
 	
+	@Transactional(readOnly=true)
+    public List<User> queryAll() {
+        Query query = em.createQuery("SELECT t FROM User t");
+		List<User> result = query.getResultList();
+		return result;
+    }
+	
 	@Transactional(readOnly=true)
     public User get(String id) {
         return em.find(User.class, id);