ClassCastException in EntityInspector

michaelkruglov17 · November 14, 2019, 9:18am

Hello! I was trying to create new nested entity1 for another entity2 in EntityInspector and I catch this

ClassCastException: class com.haulmont.cuba.gui.app.core.entityinspector.EntityInspectorEditor cannot be cast to class com.haulmont.cuba.gui.components.Window$Editor (com.haulmont.cuba.gui.app.core.entityinspector.EntityInspectorEditor and com.haulmont.cuba.gui.components.Window$Editor are in unnamed module of loader org.apache.catalina.loader.ParallelWebappClassLoader @2e54db99)
java.lang.ClassCastException: class com.haulmont.cuba.gui.app.core.entityinspector.EntityInspectorEditor cannot be cast to class com.haulmont.cuba.gui.components.Window$Editor (com.haulmont.cuba.gui.app.core.entityinspector.EntityInspectorEditor and com.haulmont.cuba.gui.components.Window$Editor are in unnamed module of loader org.apache.catalina.loader.ParallelWebappClassLoader @2e54db99)
	at com.haulmont.cuba.gui.app.core.entityinspector.EntityInspectorEditor$CreateAction.actionPerform(EntityInspectorEditor.java:1102)
	at com.haulmont.cuba.web.gui.components.WebButton.buttonClicked(WebButton.java:62)
	at com.haulmont.cuba.web.widgets.CubaButton.fireClick(CubaButton.java:76)
	at com.vaadin.ui.Button$1.click(Button.java:57)
	at jdk.internal.reflect.GeneratedMethodAccessor790.invoke(Unknown Source)
	at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.base/java.lang.reflect.Method.invoke(Method.java:566)
	at com.vaadin.server.ServerRpcManager.applyInvocation(ServerRpcManager.java:153)
	at com.vaadin.server.ServerRpcManager.applyInvocation(ServerRpcManager.java:115)
	at com.vaadin.server.communication.ServerRpcHandler.handleInvocation(ServerRpcHandler.java:431)
	at com.vaadin.server.communication.ServerRpcHandler.handleInvocations(ServerRpcHandler.java:396)
	at com.vaadin.server.communication.ServerRpcHandler.handleRpc(ServerRpcHandler.java:260)
	at com.vaadin.server.communication.UidlRequestHandler.synchronizedHandleRequest(UidlRequestHandler.java:82)
	at com.vaadin.server.SynchronizedRequestHandler.handleRequest(SynchronizedRequestHandler.java:40)
	at com.vaadin.server.VaadinService.handleRequest(VaadinService.java:1577)
	at com.vaadin.server.VaadinServlet.service(VaadinServlet.java:425)
	at com.haulmont.cuba.web.sys.CubaApplicationServlet.serviceAppRequest(CubaApplicationServlet.java:329)
	at com.haulmont.cuba.web.sys.CubaApplicationServlet.service(CubaApplicationServlet.java:215)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:741)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:231)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
	at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:53)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
	at org.springframework.web.filter.CompositeFilter$VirtualFilterChain.doFilter(CompositeFilter.java:107)
	at org.springframework.web.filter.CompositeFilter.doFilter(CompositeFilter.java:73)
	at com.haulmont.cuba.web.sys.CubaHttpFilter.doFilter(CubaHttpFilter.java:108)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
	at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:199)
	at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:96)
	at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:490)
	at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:139)
	at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:92)
	at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:668)
	at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:74)
	at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:343)
	at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:408)
	at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:66)
	at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:834)
	at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1417)
	at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49)
	at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1128)
	at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:628)
	at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
	at java.base/java.lang.Thread.run(Thread.java:834)

If I try to edit created nested intity1 all is ok, or if I try to create a new entity1 from EntityInspector it works. This exception appears only when I open entity2 editor in EntityInspector and there I try to create new nested entities1. What can it be?

tsarev · November 14, 2019, 9:55am

Hello @michaelkruglov17

It seems that we’ve fixed related problem here:

github.com/cuba-platform/cuba

ClassCastException occurs when trying to create ONE_TO_MANY association instance from the Entity Inspector

opened 11:26AM - 09 Jul 19 UTC

closed 12:58PM - 24 Jul 19 UTC

natfirst

type: regression state: fixed ver: 7.1.0 ver: 7.2.0 ver: 7.0.10

### Environment - Platform version: 7.0.8 ### Description of the bug or en…hancement 1. Create two entities, for example, Master and Detail 2. Add ONE_TO_MANY association with Master to Detail entity 3. Create view for the Detail, that includes master attribute 4. Run the app 5. Open Entity Inspector 6. Select Detail entity 7. Create an instance 8. Go to the Master tab and try to create Master instance *A.R.* Exception occurs ``` java.lang.ClassCastException: com.haulmont.cuba.gui.app.core.entityinspector.EntityInspectorEditor cannot be cast to com.haulmont.cuba.gui.components.Window$Editor at com.haulmont.cuba.gui.app.core.entityinspector.EntityInspectorEditor$CreateAction.actionPerform(EntityInspectorEditor.java:1106) at com.haulmont.cuba.web.gui.components.WebButton.buttonClicked(WebButton.java:62) at com.haulmont.cuba.web.widgets.CubaButton.fireClick(CubaButton.java:76) at com.vaadin.ui.Button$1.click(Button.java:57) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at com.vaadin.server.ServerRpcManager.applyInvocation(ServerRpcManager.java:153) at com.vaadin.server.ServerRpcManager.applyInvocation(ServerRpcManager.java:115) at com.vaadin.server.communication.ServerRpcHandler.handleInvocation(ServerRpcHandler.java:431) at com.vaadin.server.communication.ServerRpcHandler.handleInvocations(ServerRpcHandler.java:396) at com.vaadin.server.communication.ServerRpcHandler.handleRpc(ServerRpcHandler.java:260) at com.vaadin.server.communication.UidlRequestHandler.synchronizedHandleRequest(UidlRequestHandler.java:82) at com.vaadin.server.SynchronizedRequestHandler.handleRequest(SynchronizedRequestHandler.java:40) at com.vaadin.server.VaadinService.handleRequest(VaadinService.java:1577) at com.vaadin.server.VaadinServlet.service(VaadinServlet.java:425) at com.haulmont.cuba.web.sys.CubaApplicationServlet.serviceAppRequest(CubaApplicationServlet.java:329) at com.haulmont.cuba.web.sys.CubaApplicationServlet.service(CubaApplicationServlet.java:215) at javax.servlet.http.HttpServlet.service(HttpServlet.java:741) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:231) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:53) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) at org.springframework.web.filter.CompositeFilter$VirtualFilterChain.doFilter(CompositeFilter.java:107) at org.springframework.web.filter.CompositeFilter.doFilter(CompositeFilter.java:73) at com.haulmont.cuba.web.sys.CubaHttpFilter.doFilter(CubaHttpFilter.java:108) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:199) at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:96) at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:490) at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:139) at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:92) at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:668) at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:74) at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:343) at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:408) at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:66) at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:834) at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1417) at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61) at java.lang.Thread.run(Thread.java:748) ```

Could you clarify what version of CUBA do you use? Is it possible to share demo project to investigate the problem?

Regards,
Daniil

michaelkruglov17 · November 14, 2019, 10:32am

I am using platform 7.0.2. Unfortunately we can’t change it yet. Test project:

iskandarov · November 15, 2019, 6:32am

Hi @michaelkruglov17,
Thank you for your sample project.

The steps to reproduce are:

Open Entity inspector
Select the Customer entity
Create a new instance of Customer
Switch to the Orders tab and create a new Order

Right? If so, the issue is fixed in 7.0.10.

Try to update CUBA version from 7.0.2 to the latest 7.0 (7.0.12 at the moment). There should be no fundamental changes - only bugfixes. Do not forget to Update Database.

Regards.