How to replace @Inject with @PersistanceContext?

[mhi]

Hello everybody,

I'am trying to follow the trailblazer trail on how to create EJB3. However when I want to deploy the code to JBOSS 4.0.3.RC1 I get a message on the console:

--- MBEANS THAT ARE THE ROOT CAUSE OF THE PROBLEM ---
ObjectName: jboss.j2ee:service=EJB3,name=org.jboss.ejb3demo.AuthorsBean
State: FAILED
Reason: java.lang.TypeNotPresentException: Type javax.ejb.Inject not present

The problem seems to originate from the AuthosBean which is created in a flash demo (http://trailblazer.demo.jboss.com/IDETrail/ejb3/slsb/)

On the website of JBoss (http://wiki.jboss.org/wiki/Wiki.jsp?page=MigrationFromPreview5ToEJB3.0Beta) I can find documentation stating that the annotation @Inject is obsolete and I should use @PersistanceContext. However the compiler refuses to recognise this annotation. The error states "type mismatch: cannot convert from PersistanceContext to Annotation.

I'am using JBOSS 4.0.3.RC1 which I downloaded using the installer.
I'am using Eclipse 3.1.0 (Build id: I20050401-1645) AND JBoss Eclipse IDE 1.5.0.M1

[mhi]

After some editing in the java file I managed to get te compiler to compile the source without any problems. I just cleaned up the code bij removing import statements and only adding the ones really nessesary.

However when I then deploy the application to the Jboss Server, I get the following error

INFO [Ejb3Module] EJB3 deployment time took: 4203
10:44:06,343 WARN [ServiceController] Problem starting service jboss.j2ee:service=EJB3,name=org.jboss.ejb3demo.AuthorsBean
java.lang.TypeNotPresentException: Type javax.ejb.Inject not present

[lordkaos]

Try removing the import of Inject from the top of your entity class.

Cheers,
Alex.

[engelme]

Jboss-IDE 1.5M1 has not been fixed to add EJB3-PERISISTENCE.JAR to the class path. This is where the @PersistenceContext is located. Add it to you class path and see what happens

[mhi]

Thanks everybody for trying to help me out.

Unfortunatly all the suggested solutions didn't do the trick. Adding the ejb3-persistance.jar to the classpath helped a lot in so far that I could replace @inject with @PersistenceContext in AuthorsBean. However when I deploy the newly created *.war and *.ejb3 files to Jboss 4.0.2 (with EJB 3.0 Beta) Server I still get:

20:23:12,796 INFO [Ejb3Module] EJB3 deployment time took: 4500
20:23:12,890 ERROR [StatelessManager] Starting failed jboss.j2ee:service=EJB3,name=org.jboss.ejb3demo.AuthorsBean
java.lang.TypeNotPresentException: Type javax.ejb.Inject not present
at sun.reflect.generics.factory.CoreReflectionFactory.makeNamedType(CoreReflectionFactory.java:98)

I will try to figure it out, but some extra help will be appreciated.

Michiel

[elkner]

Use eclipse and make a Ctrl+Shift+O on each src file ;-)

[bill.burke]

Delete *all* of your class files and recompile.

[mhi]

Thanks everybody for helping me out. Deleting the class files did the trick.


Unfortunately I'm stuck with the next problem.

After the successful deployment of the application on Jboss 4.0.3 I get the following error after I press the articles button for the very first time:


javax.ejb.EJBException: null; CausedByException is:
detached entity passed to persist: org.jboss.ejb3demo.Author
org.jboss.ejb3.tx.Ejb3TxPolicy.handleExceptionInOurTx(Ejb3TxPolicy.java:46)
org.jboss.aspects.tx.TxPolicy.invokeInOurTx(TxPolicy.java:70)
org.jboss.aspects.tx.TxInterceptor$Required.invoke(TxInterceptor.java:134)
org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:88)
org.jboss.aspects.tx.TxPropagationInterceptor.invoke(TxPropagationInterceptor.java:72)
org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:88)
org.jboss.ejb3.stateless.StatelessInstanceInterceptor.invoke(StatelessInstanceInterceptor.java:39)
org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:88)
org.jboss.aspects.security.AuthenticationInterceptor.invoke(AuthenticationInterceptor.java:63)
org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:88)
org.jboss.ejb3.asynchronous.AsynchronousInterceptor.invoke(AsynchronousInterceptor.java:93)
org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:88)
org.jboss.ejb3.stateless.StatelessContainer.dynamicInvoke(StatelessContainer.java:183)
org.jboss.aop.Dispatcher.invoke(Dispatcher.java:107)
org.jboss.aspects.remoting.IsLocalInterceptor.invoke(IsLocalInterceptor.java:30)
org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:88)
org.jboss.ejb3.stateless.StatelessRemoteProxy.invoke(StatelessRemoteProxy.java:79)
$Proxy73.addArticle(Unknown Source)
org.jboss.ejb3demo.web.AuthorServlet.createArticles(AuthorServlet.java:54)
org.jboss.ejb3demo.web.AuthorServlet.doPost(AuthorServlet.java:42)
javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
javax.servlet.http.HttpServlet.service(HttpServlet.java:810)
org.jboss.web.tomcat.filters.ReplyHeaderFilter.doFilter(ReplyHeaderFilter.java:81)

[elkner]

"MHI" wrote:
detached entity passed to persist: org.jboss.ejb3demo.Author

So, perhaps you need a refresh/merge instead of a persist ...