This generally traduces a design error but extended persistence contexts fit
Le 12 févr. 2017 21:33, "mauro2java2011" <[email protected]> a écrit : > I would use the injected em for resolve the problem of lazy loading of > entity child. > for example to get the Orders collection from a Customer entity where the > relatioship into Customer entity is > BIDIRECTIONAL > > @OneToMany > (mappedby customer) > Set <Order> orderslist > > I would use the > > Open Session In View pattern > Like explained into > > http://stackoverflow.com/questions/1847040/open-session-in-view-pattern > > so into CustomerController when i select a Customer from table i merge it > with em injected and i can get the Orderslist with the getOrdersList from > selectedCustomer and iterate for get each order. > With requestscoped em i can use the open session in view pattern like > hibernate. > > > > Il 12/feb/2017 15:22, "Romain Manni-Bucau [via TomEE & OpenEJB]" < > [email protected]> ha scritto: > > > Hi > > > > 2017-02-12 14:38 GMT+01:00 mauro2java2011 <[hidden email] > > <http:///user/SendEmail.jtp?type=node&node=4681055&i=0>>: > > > > > Hi all. > > > > > > I would use a requestscoped entitymanager into a viewaccesscoped > > > controller. > > > > > > So i ask: > > > > > > The injected em requestscoped into controller viewscoped is a new em > for > > > each request or is all times the same into viewscoped controller? > > > > > > I know that the entity manager is not serializable. > > > > > > It is but it is not reliable in most cases > > > > > > > So if the em is requestscoped i resolve the problem with tge > > serialization > > > of the em into viewaccesscoped cobtroller? > > > > > > I have to configure some thing for use jta into cdi injected em ? > > > > > > Jta scope = transaction so not sure it matches > > > > > > > Into the class where i declare the method productor i have to use the > > > > > > @PersistenceContext (unitNane="namePU") > > > private EntityManager em; > > > > > > @Produces > > > @RequestScoped > > > > > > public EntityManager getEntityManager (){ > > > return this.em; > > > > > > } > > > > > > Or i have to use the EntityManagerFactory with > > > > > > @PersistenceUnit (name="namePu") > > > > > > private EntityManagerFactory emf; > > > > > > public getEntityManager (){ > > > return emf.createEntityManager; > > > > > > } > > > > > > public void closeEm (@Disposes EntityManager em){ > > > > > > em.close (); > > > > > > } > > > > > > > > this works for resource_local EM > > > > > > reading your mail it looks you just want a command pattern with a final > > jta > > transaction instead of immediate EM actions > > > > > > > Tank you very much . > > > > > > Mauro > > > > > > > > > > > > > > > -- > > > View this message in context: http://tomee-openejb.979440. > > > n4.nabble.com/EntityManager-into-controller-viewscoped-tp4681054.html > > > Sent from the TomEE Users mailing list archive at Nabble.com. > > > > > > > > > ------------------------------ > > If you reply to this email, your message will be added to the discussion > > below: > > http://tomee-openejb.979440.n4.nabble.com/EntityManager- > > into-controller-viewscoped-tp4681054p4681055.html > > To unsubscribe from EntityManager into controller viewscoped, click here > > <http://tomee-openejb.979440.n4.nabble.com/template/ > NamlServlet.jtp?macro=unsubscribe_by_code&node=4681054&code= > bWF1cm8yamF2YTIwMTFAZ21haWwuY29tfDQ2ODEwNTR8LTExMTcxODc2MjU=> > > . > > NAML > > <http://tomee-openejb.979440.n4.nabble.com/template/ > NamlServlet.jtp?macro=macro_viewer&id=instant_html% > 21nabble%3Aemail.naml&base=nabble.naml.namespaces. > BasicNamespace-nabble.view.web.template.NabbleNamespace- > nabble.view.web.template.NodeNamespace&breadcrumbs= > notify_subscribers%21nabble%3Aemail.naml-instant_emails% > 21nabble%3Aemail.naml-send_instant_email%21nabble%3Aemail.naml> > > > > > > > -- > View this message in context: http://tomee-openejb.979440. > n4.nabble.com/EntityManager-into-controller-viewscoped- > tp4681054p4681056.html > Sent from the TomEE Users mailing list archive at Nabble.com.
