I am not sure what comes with netbeans by default. However, I downloaded the full JEE package from Sun and I don't have any issues.
-----Original Message----- From: java-ee-j2ee-programming-with-passion@googlegroups.com [mailto:java-ee-j2ee-programming-with-pass...@googlegroups.com] On Behalf Of jps Sent: Thursday, January 29, 2009 3:29 PM To: Java EE (J2EE) Programming with Passion! Subject: [java ee programming] Re: JPA Controller Classes with Netbeans 6.5 and Glassfish Hi, The persistence.xml seems fine. I can actually make the entity classes work by initializing them explicitly with the following code in the class constructor, or elsewhere, before using the emf and utx: ... if(emf==null) { emf = Persistence.createEntityManagerFactory ("WebApp03PU"); } if (utx == null) { Context ctx = new InitialContext(); utx = (UserTransaction) ctx.lookup("java:comp/env/ UserTransaction"); } ... It's just that the automatic assignment doesnt work, as expected. There must be something more required than the steps I listed above...? I read somewhere that for this to work, requires you have *FULL* Java EE environment. Is that what you get by default when just creating a Web App in Netbeans with Glassfish server? Or is there some other option, modules, etc, that need to be enabled in the Project Properties? /JPS On 28 Jan, 22:58, "Constantine J Coutsoukes" <zoso...@nyc.rr.com> wrote: > This is just a guess but check your persistence.xml and make sure it is > correct. Specifically the jta-data-source. > > -----Original Message----- > From: java-ee-j2ee-programming-with-passion@googlegroups.com > > [mailto:java-ee-j2ee-programming-with-pass...@googlegroups.com] On Behalf Of > jps > Sent: Wednesday, January 28, 2009 10:20 AM > To: Java EE (J2EE) Programming with Passion! > Subject: [java ee programming] JPA Controller Classes with Netbeans 6.5 and > Glassfish > > Hi, > > I am using Netbeans 6.5 with Glassfish, to build a db-driven web- > application with Spring MVC 2.5. > > For the db-entities I use the commands > "Entity Classes from database" and then > "JPA Controller Classes from Entity Classes" > in Netbeans 6.5 to auto-generate the classes. > > The auto-generated JPA Controller classes will have declarations like > these > > public class MyEntityJpaController { > @Resource > private UserTransaction utx = null; > @PersistenceUnit(unitName = "WebApp03PU") > private EntityManagerFactory emf = null; > ... etc ... > > inserted in the beginning of the class. > > From what I have read in different places, the annotations above > should cause the utx and emf fields to be automatically assigned by > the application-server when creating the classes, but I cannot get > this to work. > > What I have done in Netbeans 6.5 is: > - Create Web Application with Spring MVC 2.5 support > - Create a Persistence-unit, WebApp03PU > then used > - Entity Classes from database > - JPA Controller Classes from Entity Classes > > Apparently I am then missing something further that needs to be done, > because the utx and emf fields just remain null, and never get > assigned, so I get a NullPointerException when trying to use them. > > I have tried many different things I read about this, but still cannot > figure it out. > > What else do I need to do? > I guess there is some XML-declarations, more annotations, or something > else I am missing for this to work? > > Thanks, > JPS --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "Java EE (J2EE) Programming with Passion!" group. To post to this group, send email to java-ee-j2ee-programming-with-passion@googlegroups.com To unsubscribe from this group, send email to java-ee-j2ee-programming-with-passion+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/java-ee-j2ee-programming-with-passion?hl=en -~----------~----~----~----~------~----~------~--~---
