Hello,
I have a following problem - Entity A references itself in OneToOne. You can look at it in a way, that sometimes one entity is enough, sometimes the problem has two halves which both of them are of the same type and they need to be tied together. In the browse for this A entity both of the halves are shown in the table (in case the problem is split into two halves). Because I need to ensure that one half cannot be disconnected from the other one, when user tries to delete one of the halves, the other one must go as well - cascade delete (either through JPA or OnDelete annotation problem is with both). This is when I run into the following problem. Whenever only one of the halves is selected and deleted, everything is alright (I need to exclude the other half from the browses’ datasource, but that is done by hooking to afterRemovedHandler of RemoveAction). But when I try to delete both halves at the same time (multiselect and RemoveAction) I get the following exception:
java.lang.IllegalArgumentException: Cannot merge an Entity that has been removed: com.example.entity.A-185a1b38-321a-2f40-84f5-c7f5fd14e8a0 [detached]
at org.eclipse.persistence.internal.sessions.MergeManager.registerObjectForMergeCloneIntoWorkingCopy(MergeManager.java:1063)
at org.eclipse.persistence.internal.sessions.MergeManager.getTargetVersionOfSourceObject(MergeManager.java:228)
at org.eclipse.persistence.mappings.ObjectReferenceMapping.mergeIntoObject(ObjectReferenceMapping.java:515)
at org.eclipse.persistence.internal.descriptors.ObjectBuilder.mergeIntoObject(ObjectBuilder.java:4133)
at org.eclipse.persistence.internal.sessions.MergeManager.mergeChangesOfCloneIntoWorkingCopy(MergeManager.java:594)
at org.eclipse.persistence.internal.sessions.MergeManager.mergeChanges(MergeManager.java:313)
at org.eclipse.persistence.internal.sessions.UnitOfWorkImpl.mergeCloneWithReferences(UnitOfWorkImpl.java:3569)
at org.eclipse.persistence.internal.sessions.RepeatableWriteUnitOfWork.mergeCloneWithReferences(RepeatableWriteUnitOfWork.java:387)
at org.eclipse.persistence.internal.sessions.UnitOfWorkImpl.mergeCloneWithReferences(UnitOfWorkImpl.java:3529)
at org.eclipse.persistence.internal.jpa.EntityManagerImpl.mergeInternal(EntityManagerImpl.java:553)
at org.eclipse.persistence.internal.jpa.EntityManagerImpl.merge(EntityManagerImpl.java:530)
at com.haulmont.cuba.core.sys.EntityManagerImpl.internalMerge(EntityManagerImpl.java:409)
at com.haulmont.cuba.core.sys.EntityManagerImpl.merge(EntityManagerImpl.java:109)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at com.haulmont.cuba.core.sys.PersistenceImpl$EntityManagerInvocationHandler.invoke(PersistenceImpl.java:353)
at com.sun.proxy.$Proxy181.merge(Unknown Source)
at com.haulmont.cuba.core.app.RdbmsStore.commit(RdbmsStore.java:351)
at com.haulmont.cuba.core.app.DataManagerBean.commit(DataManagerBean.java:179)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at com.haulmont.cuba.core.app.DataManagerBean$SecureDataManagerInvocationHandler.invoke(DataManagerBean.java:353)
at com.sun.proxy.$Proxy356.commit(Unknown Source)
at com.haulmont.cuba.core.app.DataServiceBean.commit(DataServiceBean.java:40)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at org.springframework.aop.support.AopUtils.invokeJoinpointUsingReflection(AopUtils.java:333)
at org.springframework.aop.framework.ReflectiveMethodInvocation.invokeJoinpoint(ReflectiveMethodInvocation.java:190)
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:157)
at org.springframework.aop.aspectj.MethodInvocationProceedingJoinPoint.proceed(MethodInvocationProceedingJoinPoint.java:85)
at com.haulmont.cuba.core.sys.ServiceInterceptor.aroundInvoke(ServiceInterceptor.java:115)
at sun.reflect.GeneratedMethodAccessor177.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at org.springframework.aop.aspectj.AbstractAspectJAdvice.invokeAdviceMethodWithGivenArgs(AbstractAspectJAdvice.java:629)
at org.springframework.aop.aspectj.AbstractAspectJAdvice.invokeAdviceMethod(AbstractAspectJAdvice.java:618)
at org.springframework.aop.aspectj.AspectJAroundAdvice.invoke(AspectJAroundAdvice.java:70)
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:168)
at org.springframework.aop.interceptor.ExposeInvocationInterceptor.invoke(ExposeInvocationInterceptor.java:92)
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:179)
at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:213)
at com.sun.proxy.$Proxy98.commit(Unknown Source)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at com.haulmont.cuba.core.sys.remoting.LocalServiceInvokerImpl.invoke(LocalServiceInvokerImpl.java:95)
at com.haulmont.cuba.web.sys.remoting.LocalServiceProxy$LocalServiceInvocationHandler.invoke(LocalServiceProxy.java:146)
at com.sun.proxy.$Proxy246.commit(Unknown Source)
at com.haulmont.cuba.client.sys.DataManagerClientImpl.commit(DataManagerClientImpl.java:96)
at com.haulmont.cuba.gui.data.impl.GenericDataSupplier.commit(GenericDataSupplier.java:90)
at com.haulmont.cuba.gui.data.impl.AbstractCollectionDatasource.commit(AbstractCollectionDatasource.java:471)
at com.haulmont.cuba.gui.components.actions.RemoveAction.doRemove(RemoveAction.java:320)
at com.haulmont.cuba.gui.components.actions.RemoveAction.remove(RemoveAction.java:237)
at com.haulmont.cuba.gui.components.actions.RemoveAction$1.actionPerform(RemoveAction.java:222)
at com.haulmont.cuba.web.WebWindowManager.lambda$showOptionDialog$297bf31$1(WebWindowManager.java:1259)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at com.vaadin.event.ListenerMethod.receiveEvent(ListenerMethod.java:510)
at com.vaadin.event.EventRouter.fireEvent(EventRouter.java:200)
at com.vaadin.event.EventRouter.fireEvent(EventRouter.java:163)
at com.vaadin.server.AbstractClientConnector.fireEvent(AbstractClientConnector.java:1037)
at com.vaadin.ui.Button.fireClick(Button.java:377)
at com.haulmont.cuba.web.toolkit.ui.CubaButton.fireClick(CubaButton.java:54)
at com.vaadin.ui.Button$1.click(Button.java:54)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at com.vaadin.server.ServerRpcManager.applyInvocation(ServerRpcManager.java:158)
at com.vaadin.server.ServerRpcManager.applyInvocation(ServerRpcManager.java:119)
at com.vaadin.server.communication.ServerRpcHandler.handleInvocation(ServerRpcHandler.java:442)
at com.vaadin.server.communication.ServerRpcHandler.handleInvocations(ServerRpcHandler.java:414)
at com.vaadin.server.communication.ServerRpcHandler.handleRpc(ServerRpcHandler.java:274)
at com.vaadin.server.communication.UidlRequestHandler.synchronizedHandleRequest(UidlRequestHandler.java:90)
at com.haulmont.cuba.web.sys.CubaVaadinServletService$CubaUidlRequestHandler.lambda$synchronizedHandleRequest$0(CubaVaadinServletService.java:314)
at com.haulmont.cuba.web.sys.CubaVaadinServletService.withUserSession(CubaVaadinServletService.java:196)
at com.haulmont.cuba.web.sys.CubaVaadinServletService$CubaUidlRequestHandler.synchronizedHandleRequest(CubaVaadinServletService.java:314)
at com.vaadin.server.SynchronizedRequestHandler.handleRequest(SynchronizedRequestHandler.java:41)
at com.vaadin.server.VaadinService.handleRequest(VaadinService.java:1422)
at com.vaadin.server.VaadinServlet.service(VaadinServlet.java:384)
at com.haulmont.cuba.web.sys.CubaApplicationServlet.serviceAppRequest(CubaApplicationServlet.java:276)
at com.haulmont.cuba.web.sys.CubaApplicationServlet.service(CubaApplicationServlet.java:185)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:729)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:230)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:165)
at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:192)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:165)
at com.haulmont.cuba.web.sys.CubaHttpFilter.handleNotFiltered(CubaHttpFilter.java:108)
at com.haulmont.cuba.web.sys.CubaHttpFilter.doFilter(CubaHttpFilter.java:95)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:192)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:165)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:198)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:96)
at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:474)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:140)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:79)
at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:624)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:87)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:349)
at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:783)
at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:66)
at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:789)
at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1437)
at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
at java.lang.Thread.run(Thread.java:745)
My guess is following - two entities are marked to be removed in CommitContext. When em removes the first one, it removes the second one as well due to delete cascade. DataStore is not aware of this and before removing the second entity it tries to merge it and that’s where it fails - because this entity is already deleted. As entity is already deleted, DataStore could just skip it and continue.
Is there a way to fix this/avoid this on our side?
Thx,
See the following issue in our bug tracker: