I have a 2 level composition screen where
- MaterialIssueCustomer is Parent Entity, 2) MaterialIssueCustomerLine is Composition screen and 3) MaterialIssueCustomerLineBatch is the composition Entity of The MaterialIssueCustomerLine.
The screen looks like as follows:
I want to reload Data Container of MaterialBatch for the Table 3 MaterialIssueCustomerLineBatchTable for selection by the user. This MaterialBatch is loaded with the parameter “material” from the selected row of the table 2 MaterialIssueCustomerLineTable.
I have tried this in the controller:
@Subscribe("materialIssueCustomerLineTable")
public void onMaterialIssueCustomerLineTableSelection(Table.SelectionEvent<MaterialIssueCustomerLine> e) {
MaterialIssueCustomerLine customerLine = (MaterialIssueCustomerLine) e.getSelected();
materialBatchesDl.setParameters(ParamsMap.of("material", customerLine.getMaterial()));
materialBatchesDl.load();
}
But getting the following exception:
java.lang.ClassCastException: java.util.Collections$SingletonSet cannot be cast to com.company.entity.mm.MaterialIssueCustomerLine
at com.company.web.mm.materialissuecustomer.MaterialIssueCustomerEdit.onMaterialIssueCustomerLineTableSelection(MaterialIssueCustomerEdit.java:192)
at com.haulmont.bali.events.EventHub.publish(EventHub.java:170)
at com.haulmont.cuba.web.gui.components.WebAbstractComponent.publish(WebAbstractComponent.java:92)
at com.haulmont.cuba.web.gui.components.WebAbstractTable.fireSelectionEvent(WebAbstractTable.java:1123)
at com.haulmont.cuba.web.gui.components.WebAbstractTable.tableSelectionChanged(WebAbstractTable.java:1111)
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:496)
at com.vaadin.event.EventRouter.fireEvent(EventRouter.java:273)
at com.vaadin.event.EventRouter.fireEvent(EventRouter.java:237)
at com.vaadin.server.AbstractClientConnector.fireEvent(AbstractClientConnector.java:1041)
at com.haulmont.cuba.web.widgets.CubaTable.fireValueChange(CubaTable.java:974)
at com.vaadin.v7.ui.AbstractField.setValue(AbstractField.java:553)
at com.vaadin.v7.ui.AbstractSelect.setValue(AbstractSelect.java:745)
at com.vaadin.v7.ui.AbstractField.setValue(AbstractField.java:450)
at com.vaadin.v7.ui.AbstractSelect.changeVariables(AbstractSelect.java:553)
at com.vaadin.v7.ui.Table.changeVariables(Table.java:2943)
at com.haulmont.cuba.web.widgets.CubaTable.changeVariables(CubaTable.java:327)
at com.vaadin.server.communication.ServerRpcHandler.changeVariables(ServerRpcHandler.java:611)
at com.vaadin.server.communication.ServerRpcHandler.handleInvocation(ServerRpcHandler.java:457)
at com.vaadin.server.communication.ServerRpcHandler.handleInvocations(ServerRpcHandler.java:400)
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:93)
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:200)
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:678)
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$ConnectionHandler.process(AbstractProtocol.java:836)
at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1747)
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)
Thanks for suggesting what should be the right approach to solve this problem.