[jboss-user] [EJB 3.0] - Problem with Entity Manager dependency injection in JBoss 5

[heinza]

Hi, everybody!

I'm trying to perform EM dependency injection in servlet using JBoss 5 Beta 1 and get the following deployment exception:

ERROR [org.jboss.kernel.plugins.dependency.AbstractKernelController] 
  | Error installing to Start: name=jboss.web.deployment:war=/simple-web state=Create mode=Manual requiredState=Installed
  | 
  | java.lang.RuntimeException: @PersistenceContext(name='env/Test/em',unitName='test-jpa') on EJB: 
  | simple-web.war failed to inject on field javax.persistence.EntityManager Test.em 
  | 
  | Unable to find persistence unit: test-jpa for deployment: simple-web.war
  | 	at org.jboss.injection.PcEncInjector.inject(PcEncInjector.java:75)
  | 	at org.jboss.web.tomcat.tc6.TomcatInjectionContainer.populateEnc(TomcatInjectionContainer.java:206)
  | ...

NOTE: When there were some errors in persistence.xml (now fixed), server reported them explicitly. Though, how can it be that server is "Unable to find persistence unit: test-jpa", but is able to find errors in it?

And a warning:

WARN  [org.hibernate.ejb.Ejb3Configuration] Persistence provider caller does not implements the EJB3 spec correctly. PersistenceUnitInfo.getNewTempClassLoader() is null.

When invoking servlet I get the following response:

exception 
  | 
  | javax.servlet.ServletException: Error instantiating servlet class Test
  | 	org.jboss.web.tomcat.security.JaccContextValve.invoke(JaccContextValve.java:86)
  | 	org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:105)
  | 	org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:212)
  | ...
  | 
  | root cause 
  | 
  | java.lang.RuntimeException: Unable to inject jndi dependency: env/Test/em into field interface javax.persistence.EntityManager
  | 	org.jboss.injection.JndiFieldInjector.lookup(JndiFieldInjector.java:85)
  | 	org.jboss.injection.JndiFieldInjector.inject(JndiFieldInjector.java:99)
  | ...
  | 
  | root cause 
  | 
  | javax.naming.NameNotFoundException: Test not bound
  | 	org.jnp.server.NamingServer.getBinding(NamingServer.java:529)
  | 	org.jnp.server.NamingServer.getBinding(NamingServer.java:537)
  | 	org.jnp.server.NamingServer.getObject(NamingServer.java:543)
  | 	org.jnp.server.NamingServer.lookup(NamingServer.java:267)
  | 	org.jnp.server.NamingServer.lookup(NamingServer.java:270)

Here is my servlet code:

public class Test ... {
  | 
  | @PersistenceContext(unitName="test-jpa")
  | EntityManager em;
  | 	
  | protected void doGet(...) {
  | 		
  | 	Mytable mytable = em.find(Mytable.class, new Integer(5));
  | 	response.getOutputStream().print(mytable.getName());
  | 	}  	  	  	    
  | }

Here is persistence.xml:

<?xml version="1.0" encoding="UTF-8"?>
  | 
  | <persistence version="1.0" ... >
  | 	<persistence-unit name="test-jpa" transaction-type="RESOURCE_LOCAL">
  | 		<jta-data-source>java:/MySqlDS</jta-data-source>
  | 		<class>Mytable</class>
  | 		<properties>
  | 			<property name="hibernate.dialect" value="org.hibernate.dialect.MySQLInnoDBDialect" />
  | 		</properties>
  | 	</persistence-unit>
  | </persistence>

WAR structure:

simple-web.war
  | 	/META-INF
  | 		manifest.mf
  | 	/WEB-INF
  | 		/classes
  | 			Test.java (servlet)
  | 			Mytable.java (entity)
  | 		web.xml
  | 		persistence.xml

AFAIK, JBoss 5 is supposed to support dependency injection in servlets. So what's wrong?

Any help would be pleased. Thanks in advance.

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