Example usage for javax.persistence EntityManagerFactory getMetamodel

Introduction

In this page you can find the example usage for javax.persistence EntityManagerFactory getMetamodel.

Prototype

public Metamodel getMetamodel();

Source Link

Document

Return an instance of Metamodel interface for access to the metamodel of the persistence unit.

Usage

From source file:org.jasig.portlet.blackboardvcportlet.dao.impl.BaseJpaDaoTest.java

/**
 * Deletes ALL entities from the database
 *//*from  w  w  w. j  a  v  a 2 s  .co  m*/
@After
public final void deleteAllEntities() {
    final EntityManager entityManager = getEntityManager();
    final EntityManagerFactory entityManagerFactory = entityManager.getEntityManagerFactory();
    final Metamodel metamodel = entityManagerFactory.getMetamodel();
    Set<EntityType<?>> entityTypes = new LinkedHashSet<EntityType<?>>(metamodel.getEntities());

    do {
        final Set<EntityType<?>> failedEntitieTypes = new HashSet<EntityType<?>>();

        for (final EntityType<?> entityType : entityTypes) {
            final String entityClassName = entityType.getBindableJavaType().getName();

            try {
                this.executeInTransaction(new Callable<Object>() {
                    @Override
                    public Object call() throws Exception {
                        logger.trace("Purging all: " + entityClassName);

                        final Query query = entityManager
                                .createQuery("SELECT e FROM " + entityClassName + " AS e");
                        final List<?> entities = query.getResultList();
                        logger.trace("Found " + entities.size() + " " + entityClassName + " to delete");
                        for (final Object entity : entities) {
                            entityManager.remove(entity);
                        }

                        return null;
                    }
                });
            } catch (DataIntegrityViolationException e) {
                logger.trace(
                        "Failed to delete " + entityClassName + ". Must be a dependency of another entity");
                failedEntitieTypes.add(entityType);
            }
        }

        entityTypes = failedEntitieTypes;
    } while (!entityTypes.isEmpty());

    //Reset all spring managed mocks after every test
    MockitoFactoryBean.resetAllMocks();
}

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From source file:org.azrul.langkuik.Langkuik.java

public void initLangkuik(final EntityManagerFactory emf, final UI ui,
        final RelationManagerFactory relationManagerFactory, List<Class<?>> customTypeInterfaces) {

    List<Class<?>> rootClasses = new ArrayList<>();
    for (ManagedType<?> entity : emf.getMetamodel().getManagedTypes()) {
        Class<?> clazz = entity.getJavaType();
        if (clazz.getAnnotation(WebEntity.class).isRoot() == true) {
            rootClasses.add(clazz);/*from  w w  w  . j a  v  a 2  s  . c om*/
        }
    }

    //Manage custom type
    if (customTypeInterfaces == null) {
        customTypeInterfaces = new ArrayList<>();
    }
    //add system level custom type
    customTypeInterfaces.add(AttachmentCustomType.class);
    //create DAOs for custom types
    final List<DataAccessObject<?>> customTypeDaos = new ArrayList<>();
    for (Class<?> clazz : customTypeInterfaces) {
        customTypeDaos.add(new HibernateGenericDAO(emf, clazz));
    }

    //Setup page
    VerticalLayout main = new VerticalLayout();
    VerticalLayout content = new VerticalLayout();
    final Navigator navigator = new Navigator(ui, content);
    final HorizontalLayout breadcrumb = new HorizontalLayout();

    MenuBar menubar = new MenuBar();
    menubar.setId("MENUBAR");
    main.addComponent(menubar);
    main.addComponent(breadcrumb);
    main.addComponent(content);

    final Deque<History> history = new ArrayDeque<>();
    final Configuration config = Configuration.getInstance();

    history.push(new History("START", "Start"));
    StartView startView = new StartView(history, breadcrumb);
    navigator.addView("START", startView);
    MenuBar.MenuItem create = menubar.addItem("Create", null);
    MenuBar.MenuItem view = menubar.addItem("View", null);

    final PageParameter pageParameter = new PageParameter(customTypeDaos, emf, relationManagerFactory, history,
            config, breadcrumb);

    for (final Class rootClass : rootClasses) {
        final WebEntity myObject = (WebEntity) rootClass.getAnnotation(WebEntity.class);
        final DataAccessObject<?> dao = new HibernateGenericDAO<>(emf, rootClass);
        create.addItem("New " + myObject.name(), new MenuBar.Command() {
            @Override
            public void menuSelected(MenuBar.MenuItem selectedItem) {
                Object object = dao.createNew(true);
                BeanView<Object, ?> createNewView = new BeanView<>(object, null, null, pageParameter);
                String targetView = "CREATE_NEW_APPLICATION_" + UUID.randomUUID().toString();
                navigator.addView(targetView, (View) createNewView);
                history.clear();
                history.push(new History("START", "Start"));
                History his = new History(targetView, "Create new " + myObject.name());
                history.push(his);
                navigator.navigateTo(targetView);
            }
        });
        view.addItem("View " + myObject.name(), new MenuBar.Command() {
            @Override
            public void menuSelected(MenuBar.MenuItem selectedItem) {
                PlainTableView<?> seeApplicationView = new PlainTableView<>(rootClass, pageParameter);
                String targetView = "VIEW_APPLICATION_" + UUID.randomUUID().toString();
                navigator.addView(targetView, (View) seeApplicationView);
                history.clear();
                history.push(new History("START", "Start"));
                History his = new History(targetView, "View " + myObject.name());
                history.push(his);
                navigator.navigateTo(targetView);
            }
        });
    }

    menubar.addItem("Logout", null).addItem("Logout", new MenuBar.Command() {
        @Override
        public void menuSelected(MenuBar.MenuItem selectedItem) {
            ConfirmDialog.show(ui, "Please Confirm:", "Are you really sure you want to log out?", "I am",
                    "Not quite", new ConfirmDialog.Listener() {
                        @Override
                        public void onClose(ConfirmDialog dialog) {
                            if (dialog.isConfirmed()) {
                                HttpServletRequest req = (HttpServletRequest) VaadinService.getCurrentRequest();
                                HttpServletResponse resp = (HttpServletResponse) VaadinService
                                        .getCurrentResponse();
                                Authentication auth = SecurityContextHolder.getContext().getAuthentication();
                                SecurityContextLogoutHandler ctxLogOut = new SecurityContextLogoutHandler();
                                ctxLogOut.logout(req, resp, auth);
                            }
                        }
                    });

        }
    });
    navigator.navigateTo("START");
    ui.setContent(main);
}

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