Who's responsible for instantiating the TestEndpoint class? Is it really
instantiated by Guice or is Guice only injecting its members (in which case
AOP won't work) ?
On Friday, October 18, 2013 11:06:53 AM UTC+2, Dirk Vranckaert wrote:
>
> I'm building a backend application for one of my Android applications.
> My setup is Hibernate as ORM, MySQL as DB, Guice as DI and Guice-Persist
> for the link between ORM and DI.
>
> My webservice-endpoint class looks like this:
>
> @Path("test")
> public class TestEndpoint {
> @Inject
> private UserDao userDao;
>
> @GET
> @Path("persistUser")
> @Produces(MediaType.TEXT_PLAIN)
> @Transactional
> public String persistUser() {
> User user = new User();
> user.setEmail("[email protected] <javascript:>");
> user.setFirstName("FirstName");
> user.setLastName("LastName");
> user = userDao.persist(user);
> return "ok";
> }
> }
>
> When I manually manage the transaction it works and my entity is persisted:
>
> @Path("test")
> public class TestEndpoint {
> @Inject
> private UserDao userDao;
>
> @Inject
> private Provider<EntityManager> em;
>
> @GET
> @Path("persistUser")
> @Produces(MediaType.TEXT_PLAIN)
> public String persistUser() {
>
> ((HibernateEntityManager)em.get()).getSession().getTransaction().begin();
>
> User user = new User();
> user.setEmail("[email protected] <javascript:>");
> user.setFirstName("FirstName");
> user.setLastName("LastName");
> user = userDao.persist(user);
>
>
> ((HibernateEntityManager)em.get()).getSession().getTransaction().commit();
>
> return "ok";
> }
> }
>
> My UseDaoImpl that is injected via UserDao looks like this:
>
> public abstract class UserDaoImpl {
> @Inject
> private Provider<EntityManager> em;
>
> public EntityManager getEntityManager() {
> return em.get();
> }
> public User persist(User instance) {
> getEntityManager().persist(instance);
> return instance;
> }
>
> public User findById(String id) {
> return getEntityManager().find(User.class, id);
> }
> }
>
> My GuiceContextListener looks like this:
> public class GuiceContextListener extends GuiceServletContextListener {
> @Override
> protected Injector getInjector() {
> Injector injector = Guice.createInjector(
> new DatabaseModule(),
> new GuiceDaoModule(),
> new GuiceServiceModule(),
> new ServletModule()
> );
> return injector;
> }
> }
>
> The DatabaseModule:
> public class DatabaseModule extends AbstractModule {
> private static final String JPA_UNIT = "myDB";
>
> @Override
> protected void configure() {
> install(new JpaPersistModule(JPA_UNIT));
> }
> }
>
> The GuiceDaoModule:
> public class GuiceDaoModule implements Module {
> @Override
> public void configure(Binder binder) {
> binder.bind(UserDao.class).to(UserDaoImpl.class);
> }
> }
>
> And this is my web.xml configuration:
> <?xml version="1.0" encoding="ISO-8859-1"?>
> <web-app xmlns="http://java.sun.com/xml/ns/javaee";
> xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance";
> xsi:schemaLocation="http://java.sun.com/xml/ns/javaee
> http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd";
> version="2.5">
> <display-name>MyApp</display-name>
>
> <listener>
>
> <listener-class>eu.vranckaert.test.guice.GuiceContextListener</listener-class>
> </listener>
>
> <!-- GUICE -->
> <filter>
> <filter-name>guiceFilter</filter-name>
> <filter-class>com.google.inject.servlet.GuiceFilter</filter-class>
> </filter>
>
> <filter-mapping>
> <filter-name>guiceFilter</filter-name>
> <url-pattern>/*</url-pattern>
> </filter-mapping>
> </web-app>
>
>
> When I do findById(..) I can also retrieve my record, so my DB connection
> is working, I'm just not able to use the @Transactional annotation...
> So I found something about wrong scope of my EntityManager, but I have no
> clue how I can change the entity manager's scope...
>
> You guys have any idea what is wrong with my setup that the annotation
> does not work?
>
> Dirk
>
--
You received this message because you are subscribed to the Google Groups
"google-guice" group.
To unsubscribe from this group and stop receiving emails from it, send an email
to [email protected].
To post to this group, send email to [email protected].
Visit this group at http://groups.google.com/group/google-guice.
For more options, visit https://groups.google.com/groups/opt_out.
