Any idea how to go about to debug this? How find out what the problem really is? /JPS
On 29 Jan, 21:55, "Constantine J Coutsoukes" <zoso...@nyc.rr.com> wrote: > 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 -~----------~----~----~----~------~----~------~--~---
