Context
I want to schedule recurring background jobs with ManagedScheduledExecutorService. I get Runnables / Callableusing Instance, so I have injection capabilities inside my tasks.
My app is working on TomEE 7.0.0-SNAPSHOT webprofile.
Problem
Because these tasks access the database, they need a transaction. However, inside Runnable/ Callabletransaction is not active.
User transaction
The documentation for ManagedScheduledExecutorService states that
If a transaction is required, use an instance of javax.transaction.UserTransaction. A UserTransaction instance is available (...) by requesting an injection of the UserTransaction object using the Resource annotation.
However introduced
@Resource
private UserTransaction userTransaction;
null .
bean
, , , EJB , , .
:
SEVERE: CDI Beans module deployment failed
java.lang.IllegalStateException: no interface to proxy for ejb StatelessEjb, is this is a MDB maybe you shouldn't use a scope?
at org.apache.openejb.cdi.CdiEjbBean.createEjb(CdiEjbBean.java:252)
at org.apache.openejb.cdi.CdiPlugin.getSessionBeanProxy(CdiPlugin.java:224)
at org.apache.webbeans.container.BeanManagerImpl.getEjbOrJmsProxyReference(BeanManagerImpl.java:951)
at org.apache.webbeans.container.BeanManagerImpl.getReference(BeanManagerImpl.java:777)
at org.apache.webbeans.container.BeanManagerImpl.getInjectableReference(BeanManagerImpl.java:651)
at org.apache.webbeans.inject.AbstractInjectable.inject(AbstractInjectable.java:111)
at org.apache.webbeans.inject.InjectableConstructor.createParameters(InjectableConstructor.java:109)
at org.apache.webbeans.inject.InjectableConstructor.doInjection(InjectableConstructor.java:72)
at org.apache.webbeans.portable.InjectionTargetImpl.newInstance(InjectionTargetImpl.java:190)
at org.apache.webbeans.portable.InjectionTargetImpl.produce(InjectionTargetImpl.java:173)
at org.apache.webbeans.portable.AbstractProducer.produce(AbstractProducer.java:172)
at org.apache.webbeans.component.AbstractOwbBean.create(AbstractOwbBean.java:127)
at org.apache.webbeans.component.ManagedBean.create(ManagedBean.java:67)
at org.apache.webbeans.context.DependentContext.getInstance(DependentContext.java:68)
at org.apache.webbeans.context.AbstractContext.get(AbstractContext.java:124)
at org.apache.webbeans.container.BeanManagerImpl.getReference(BeanManagerImpl.java:785)
at org.apache.webbeans.inject.instance.InstanceImpl.create(InstanceImpl.java:306)
at org.apache.webbeans.inject.instance.InstanceImpl.get(InstanceImpl.java:123)
(...)
Github. , , .
- EJB
@Stateless , ? @Resource UserTransaction?