I want to delete a row in a database, so i created an EJB that does it for me
@Stateless(name = "ejbs/AdminAcountEJB")
public class AdminAcountEJB implements IAdminAcountEJB {
@PersistenceContext
private EntityManager entityManager;
public void deleteRecord(Record record) {
entityManager.remove(record);
}
}
I did not create TransactionEntity object and then use the begin() method, because as i understood, the EJB's are already transaction secured.
To see if it works in the user interface(A JSF 2.0 page) i created a datatable with a column with a delete command link and triggered it from a backingbean that is connected to the EJB:
page
<h:dataTable value="#{managementBB.retrieveRecords()}" var="record">
...
<h:column>
<h:commandLink value="X" action="#{managementBB.deleteRow(record)}"/>
</h:column>
</h:dataTable>
backing bean
@Named("managementBB")
@SessionScoped
public class ManagementBB implements Serializable{
@EJB
private IAdminAcountEJB managementEJB;
//...
public String deleteRow(Record record) {
managementEJB.deleteRecord(record);
return "manage?faces-redirect=true;";
}
This is the error i see in the console when ciclking the link to delete a row:
WARNING: StandardWrapperValve[Faces Servlet]: PWC1406: Servlet.service() for servlet Faces Servlet threw exception javax.faces.el.EvaluationException: javax.ejb.EJBException at javax.faces.component.MethodBindingMethodExpressionAdapter.invoke(MethodBindingMethodExpressionAdapter.java:102) at com.sun.faces.application.ActionListenerImpl.processAction(ActionListenerImpl.java:102) at javax.faces.component.UICommand.broadcast(UICommand.java:315) at javax.faces.component.UIData.broadcast(UIData.java:912) at javax.faces.component.UIViewRoot.broadcastEvents(UIViewRoot.java:775) at javax.faces.component.UIViewRoot.processApplication(UIViewRoot.java:1267) at com.sun.faces.lifecycle.InvokeApplicationPhase.execute(InvokeApplicationPhase.java:82) at com.sun.faces.lifecycle.Phase.doPhase(Phase.java:101) at com.sun.faces.lifecycle.LifecycleImpl.execute(LifecycleImpl.java:118) at javax.faces.webapp.FacesServlet.service(FacesServlet.java:312) at org.apache.catalina.core.StandardWrapper.service(StandardWrapper.java:1523) at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:279) at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:188) at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:641) at com.sun.enterprise.web.WebPipeline.invoke(WebPipeline.java:97) at com.sun.enterprise.web.PESessionLockingStandardPipeline.invoke(PESessionLockingStandardPipeline.java:85) at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:185) at org.apache.catalina.connector.CoyoteAdapter.doService(CoyoteAdapter.java:325) at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:226) at com.sun.enterprise.v3.services.impl.ContainerMapper.service(ContainerMapper.java:165) at com.sun.grizzly.http.ProcessorTask.invokeAdapter(ProcessorTask.java:791) at com.sun.grizzly.http.ProcessorTask.doProcess(ProcessorTask.java:693) at com.sun.grizzly.http.ProcessorTask.process(ProcessorTask.java:954) at com.sun.grizzly.http.DefaultProtocolFilter.execute(DefaultProtocolFilter.java:170) at com.sun.grizzly.DefaultProtocolChain.executeProtocolFilter(DefaultProtocolChain.java:135) at com.sun.grizzly.DefaultProtocolChain.execute(DefaultProtocolChain.java:102) at com.sun.grizzly.DefaultProtocolChain.execute(DefaultProtocolChain.java:88) at com.sun.grizzly.http.HttpProtocolChain.execute(HttpProtocolChain.java:76) at com.sun.grizzly.ProtocolChainContextTask.doCall(ProtocolChainContextTask.java:53) at com.sun.grizzly.SelectionKeyContextTask.call(SelectionKeyContextTask.java:57) at com.sun.grizzly.ContextTask.run(ContextTask.java:69) at com.sun.grizzly.util.AbstractThreadPool$Worker.doWork(AbstractThreadPool.java:330) at com.sun.grizzly.util.AbstractThreadPool$Worker.run(AbstractThreadPool.java:309) at java.lang.Thread.run(Thread.java:662) Caused by: javax.ejb.EJBException at com.sun.ejb.containers.BaseContainer.processSystemException(BaseContainer.java:5119) at com.sun.ejb.containers.BaseContainer.completeNewTx(BaseContainer.java:5017) at com.sun.ejb.containers.BaseContainer.postInvokeTx(BaseContainer.java:4805) at com.sun.ejb.containers.BaseContainer.postInvoke(BaseContainer.java:2004) at com.sun.ejb.containers.BaseContainer.postInvoke(BaseContainer.java:1955) at com.sun.ejb.containers.EJBLocalObjectInvocationHandler.invoke(EJBLocalObjectInvocationHandler.java:198) at com.sun.ejb.containers.EJBLocalObjectInvocationHandlerDelegate.invoke(EJBLocalObjectInvocationHandlerDelegate.java:84) at $Proxy162.deleteRecord(Unknown Source) at backingbeans.ManagementBB.deleteRow(ManagementBB.java:46) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) at java.lang.reflect.Method.invoke(Method.java:597) at org.jboss.weld.util.reflection.SecureReflections$13.work(SecureReflections.java:304) at org.jboss.weld.util.reflection.SecureReflectionAccess.run(SecureReflectionAccess.java:54) at org.jboss.weld.util.reflection.SecureReflectionAccess.runAsInvocation(SecureReflectionAccess.java:163) at org.jboss.weld.util.reflection.SecureReflections.invoke(SecureReflections.java:298) at org.jboss.weld.bean.proxy.ClientProxyMethodHandler.invoke(ClientProxyMethodHandler.java:113) at org.jboss.weld.util.CleanableMethodHandler.invoke(CleanableMethodHandler.java:43) at backingbeans.ManagementBB_$$_javassist_132.deleteRow(ManagementBB_$$_javassist_132.java) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) at java.lang.reflect.Method.invoke(Method.java:597) at javax.el.BeanELResolver.invokeMethod(BeanELResolver.java:737) at javax.el.BeanELResolver.invoke(BeanELResolver.java:467) at javax.el.CompositeELResolver.invoke(CompositeELResolver.java:246) at com.sun.el.parser.AstValue.invoke(AstValue.java:228) at com.sun.el.MethodExpressionImpl.invoke(MethodExpressionImpl.java:297) at org.jboss.weld.util.el.ForwardingMethodExpression.invoke(ForwardingMethodExpression.java:43) at org.jboss.weld.el.WeldMethodExpression.invoke(WeldMethodExpression.java:72) at com.sun.faces.facelets.el.TagMethodExpression.invoke(TagMethodExpression.java:98) at javax.faces.component.MethodBindingMethodExpressionAdapter.invoke(MethodBindingMethodExpressionAdapter.java:88) ... 33 more Caused by: java.lang.IllegalArgumentException: Entity must be managed to call remove: entities.Record@df8b3d, try merging the detached and try the remove again. at org.eclipse.persistence.internal.sessions.UnitOfWorkImpl.performRemove(UnitOfWorkImpl.java:3539) at org.eclipse.persistence.internal.jpa.EntityManagerImpl.remove(EntityManagerImpl.java:435) at com.sun.enterprise.container.common.impl.EntityManagerWrapper.remove(EntityManagerWrapper.java:292) at ejbs.AdminAcountEJB.deleteRecord(AdminAcountEJB.java:23) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) at java.lang.reflect.Method.invoke(Method.java:597) at org.glassfish.ejb.security.application.EJBSecurityManager.runMethod(EJBSecurityManager.java:1056) at org.glassfish.ejb.security.application.EJBSecurityManager.invoke(EJBSecurityManager.java:1128) at com.sun.ejb.containers.BaseContainer.invokeBeanMethod(BaseContainer.java:5292) at com.sun.ejb.EjbInvocation.invokeBeanMethod(EjbInvocation.java:615) at com.sun.ejb.containers.interceptors.AroundInvokeChainImpl.invokeNext(InterceptorManager.java:797) at com.sun.ejb.EjbInvocation.proceed(EjbInvocation.java:567) at org.jboss.weld.ejb.SessionBeanInterceptor.aroundInvoke(SessionBeanInterceptor.java:47) at sun.reflect.GeneratedMethodAccessor87.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) at java.lang.reflect.Method.invoke(Method.java:597) at com.sun.ejb.containers.interceptors.AroundInvokeInterceptor.intercept(InterceptorManager.java:858) at com.sun.ejb.containers.interceptors.AroundInvokeChainImpl.invokeNext(InterceptorManager.java:797) at com.sun.ejb.EjbInvocation.proceed(EjbInvocation.java:567) at com.sun.ejb.containers.interceptors.SystemInterceptorProxy.doAround(SystemInterceptorProxy.java:157) at com.sun.ejb.containers.interceptors.SystemInterceptorProxy.aroundInvoke(SystemInterceptorProxy.java:139) at sun.reflect.GeneratedMethodAccessor86.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) at java.lang.reflect.Method.invoke(Method.java:597) at com.sun.ejb.containers.interceptors.AroundInvokeInterceptor.intercept(InterceptorManager.java:858) at com.sun.ejb.containers.interceptors.AroundInvokeChainImpl.invokeNext(InterceptorManager.java:797) at com.sun.ejb.containers.interceptors.InterceptorManager.intercept(InterceptorManager.java:367) at com.sun.ejb.containers.BaseContainer.__intercept(BaseContainer.java:5264) at com.sun.ejb.containers.BaseContainer.intercept(BaseContainer.java:5252) at com.sun.ejb.containers.EJBLocalObjectInvocationHandler.invoke(EJBLocalObjectInvocationHandler.java:190) ... 60 more
As you see i use CDI for beans(@Named) instead of @ManagedBeans but i hope that is not the reason. Also i would like to mention that in my database, i have an independent table, that is not related at all to the Record table, could this affect?
