public class DatabaseServiceImpl implements DatabaseService {
EntityManager em =
JPAContainerFactory.createEntityManagerForPersistenceUnit(
TwentyFourConstants.PERSISTENCE_UNIT);
@Override
public void init() {
if (isInitiated()) {
System.out.println("The database is already initiated.");
return;
}
System.out.println("Initiating database for the first time.");
addUsers();
markAsInitiated();
}
private boolean isInitiated() {
boolean initiated = false;
CriteriaQuery<Properties> query = em.getCriteriaBuilder().createQuery(Properties.class);
List<Properties> propertiesList =
em.createQuery(query.select(query.from(Properties.class))).getResultList();
for (Properties properties : propertiesList) {
if (properties.getDb().toString().equals("basic")
&& properties.getState().toString().equals("Initiated")) {
initiated = true;
}
}
return initiated;
}
private void addUsers() {
UserServiceImpl service = new UserServiceImpl();
service.addUser("chgri", "Chris", "Grivas", Role.ADMIN);
}
private void markAsInitiated() {
Properties twentyFourDatabaseState = new Properties();
twentyFourDatabaseState.setDb("basic");
twentyFourDatabaseState.setState("Initiated");
EntityTransaction tx = em.getTransaction();
tx.begin();
em.persist(twentyFourDatabaseState);
tx.commit();
}
}
@Theme("mytheme")
@Widgetset("vist.stat.vaadinjpacontainertest.MyAppWidgetset")
public class MyUI extends UI {
private final JPAContainer<Reference> jpaPost =
JPAContainerFactory.make(Reference.class, "vist.stat_VaadinJPAContainerTest_war_1.0PU");
private final EntityManager em = jpaPost.getEntityProvider().getEntityManager();
@Override
protected void init(VaadinRequest vaadinRequest) {
final VerticalLayout layout = new VerticalLayout();
layout.setMargin(true);
setContent(layout);
Button button = new Button("Click Me");
// button.addClickListener(new Button.ClickListener() {
// @Override
// public void buttonClick(ClickEvent event) {
// Query qwr = em.createNamedQuery("Reference.findActual");
// qwr.setParameter("status", RecStatus.ACTIVE);
// List<Reference> resultList = qwr.getResultList();
// for (Reference post : resultList)
// layout.addComponent(new Label(post.getName()));
// }
// });
layout.addComponent(showGrid());
layout.addComponent(button);
}
@WebServlet(urlPatterns = "/*", name = "MyUIServlet", asyncSupported = true)
@VaadinServletConfiguration(ui = MyUI.class, productionMode = false)
public static class MyUIServlet extends VaadinServlet {}
private Grid showGrid() {
Grid grid = new Grid("Справочник", jpaPost);
grid.setSizeFull();
return grid;
}
}
@BeforeClass
public static void init(){
changements = JPAContainerFactory.makeJndi(Changement.class);
}