Statefull EJB extends from EntityHome throws ClassCastExcept
I use stateful ejb extends the EntityHome, but I want to use @PersistenceContext inject the EntityManager, so i can use ejb container transaction management, but it throws Exception. I don't know why, who can help me? Does EntityHome must use itself EntityManager? Thanks your reply.
My ejb:
import javax.ejb.Remove;
import javax.ejb.Stateful;
import javax.persistence.EntityManager;
import javax.persistence.PersistenceContext;
import org.jboss.seam.annotations.Destroy;
import org.jboss.seam.annotations.Name;
import org.jboss.seam.annotations.Begin;
import org.jboss.seam.annotations.RequestParameter;
import org.jboss.seam.framework.EntityHome;
import com.foo.psims.entity.MyEntity;
@Stateful
@Name("myEntityHome")
public class MyEntityHome extends EntityHome<MyEntity> implements
BaseHomeInter<MyEntity> {
private static final long serialVersionUID = -7234024691621156847L;
@PersistenceContext
EntityManager em;
@RequestParameter
Long myEntityId;
@Override
public Object getId() {
if (myEntityId == null) {
return super.getId();
} else {
return myEntityId;
}
}
@Override
@Begin
public void create() {
super.create();
}
@Remove
@Destroy
public void destroy() {
}
public String delete() {
return super.remove();
}
@Override
public EntityManager getEntityManager() {
return em;
}
@Override
public void setEntityManager(EntityManager entityManager) {
em = entityManager;
}
}
Exception:
Exception during INVOKE_APPLICATION(5): java.lang.ClassCastException: org.hibernate.ejb.EntityManagerImpl org.jboss.ejb3.tx.Ejb3TxPolicy.handleInCallerTx(Ejb3TxPolicy.java:93) org.jboss.aspects.tx.TxPolicy.invokeInCallerTx(TxPolicy.java:130) org.jboss.aspects.tx.TxInterceptor$Required.invoke(TxInterceptor.java:195) org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:101) org.jboss.aspects.tx.TxPropagationInterceptor.invoke(TxPropagationInterceptor.java:76) org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:101) org.jboss.ejb3.stateful.StatefulInstanceInterceptor.invoke(StatefulInstanceInterceptor.java:83) org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:101) org.jboss.aspects.security.AuthenticationInterceptor.invoke(AuthenticationInterceptor.java:77) org.jboss.ejb3.security.Ejb3AuthenticationInterceptor.invoke(Ejb3AuthenticationInterceptor.java:102) org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:101) org.jboss.ejb3.ENCPropagationInterceptor.invoke(ENCPropagationInterceptor.java:47) org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:101) org.jboss.ejb3.asynchronous.AsynchronousInterceptor.invoke(AsynchronousInterceptor.java:106) org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:101) org.jboss.ejb3.stateful.StatefulContainer.localInvoke(StatefulContainer.java:203) org.jboss.ejb3.stateful.StatefulLocalProxy.invoke(StatefulLocalProxy.java:98) $Proxy377.persist(Unknown Source) com.foo.psims.action.BaseHomeInter$$FastClassByCGLIB$$c393af8b.invoke(<generated>) net.sf.cglib.proxy.MethodProxy.invoke(MethodProxy.java:149) org.jboss.seam.intercept.RootInvocationContext.proceed(RootInvocationContext.java:45) org.jboss.seam.intercept.ClientSideInterceptor$1.proceed(ClientSideInterceptor.java:73) org.jboss.seam.intercept.SeamInvocationContext.proceed(SeamInvocationContext.java:55) org.jboss.seam.interceptors.RemoveInterceptor.removeIfNecessary(RemoveInterceptor.java:39) sun.reflect.GeneratedMethodAccessor589.invoke(Unknown Source) sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) java.lang.reflect.Method.invoke(Method.java:585) org.jboss.seam.util.Reflections.invoke(Reflections.java:18) org.jboss.seam.intercept.Interceptor.aroundInvoke(Interceptor.java:169) org.jboss.seam.intercept.SeamInvocationContext.proceed(SeamInvocationContext.java:64) org.jboss.seam.interceptors.ExceptionInterceptor.handleExceptions(ExceptionInterceptor.java:38) sun.reflect.GeneratedMethodAccessor588.invoke(Unknown Source) sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) java.lang.reflect.Method.invoke(Method.java:585) org.jboss.seam.util.Reflections.invoke(Reflections.java:18) org.jboss.seam.intercept.Interceptor.aroundInvoke(Interceptor.java:169) org.jboss.seam.intercept.SeamInvocationContext.proceed(SeamInvocationContext.java:64) org.jboss.seam.intercept.RootInterceptor.createSeamInvocationContext(RootInterceptor.java:144) org.jboss.seam.intercept.RootInterceptor.invokeInContexts(RootInterceptor.java:129) org.jboss.seam.intercept.RootInterceptor.invoke(RootInterceptor.java:102) org.jboss.seam.intercept.ClientSideInterceptor.interceptInvocation(ClientSideInterceptor.java:82) org.jboss.seam.intercept.ClientSideInterceptor.intercept(ClientSideInterceptor.java:51) com.foo.psims.action.BaseHomeInter$$EnhancerByCGLIB$$fea389ff.persist(<generated>) sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39) sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) java.lang.reflect.Method.invoke(Method.java:585) com.sun.el.parser.AstValue.invoke(AstValue.java:151) com.sun.el.MethodExpressionImpl.invoke(MethodExpressionImpl.java:283) com.sun.facelets.el.TagMethodExpression.invoke(TagMethodExpression.java:68) com.sun.facelets.el.LegacyMethodBinding.invoke(LegacyMethodBinding.java:69) org.apache.myfaces.application.ActionListenerImpl.processAction(ActionListenerImpl.java:63) javax.faces.component.UICommand.broadcast(UICommand.java:106) javax.faces.component.UIViewRoot._broadcastForPhase(UIViewRoot.java:94) javax.faces.component.UIViewRoot.processApplication(UIViewRoot.java:168) org.apache.myfaces.lifecycle.LifecycleImpl.invokeApplication(LifecycleImpl.java:343) org.apache.myfaces.lifecycle.LifecycleImpl.execute(LifecycleImpl.java:86) javax.faces.webapp.FacesServlet.service(FacesServlet.java:137) org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:252) org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173) org.jboss.seam.servlet.SeamRedirectFilter.doFilter(SeamRedirectFilter.java:32) org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:202) org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173) org.jboss.seam.servlet.SeamExceptionFilter.doFilter(SeamExceptionFilter.java:46) org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:202) org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173) org.jboss.web.tomcat.filters.ReplyHeaderFilter.doFilter(ReplyHeaderFilter.java:96) org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:202) org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173) org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:213) org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:178) org.jboss.web.tomcat.security.SecurityAssociationValve.invoke(SecurityAssociationValve.java:175) org.jboss.web.tomcat.security.JaccContextValve.invoke(JaccContextValve.java:74) org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:126) org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:105) org.jboss.web.tomcat.tc5.jca.CachedConnectionValve.invoke(CachedConnectionValve.java:156) org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:107) org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:148) org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:869) org.apache.coyote.http11.Http11BaseProtocol$Http11ConnectionHandler.processConnection(Http11BaseProtocol.java:664) org.apache.tomcat.util.net.PoolTcpEndpoint.processSocket(PoolTcpEndpoint.java:527) org.apache.tomcat.util.net.MasterSlaveWorkerThread.run(MasterSlaveWorkerThread.java:112) java.lang.Thread.run(Thread.java:595)
