When changing the cardinality of an entity in designer mode from “many to one” to “one to one” the following exception is thrown.
Details: Current thread: Thread[qtp2030321122-1031,5,Idea Thread Group] 1196373365
; dispatch thread: false; isDispatchThread(): false
SystemEventQueueThread: Thread[AWT-EventQueue-0 2018.3.4#IU-183.5429.30 IDEA, eap:false, os:Mac OS X 10.13.6, java-version:JetBrains s.r.o 1.8.0_152-release-1343-b26,6,Idea Thread Group] 1984573284
java.lang.Throwable: Read access is allowed from event dispatch thread or inside read-action only (see com.intellij.openapi.application.Application.runReadAction())
at com.intellij.openapi.diagnostic.Logger.error(Logger.java:156)
at com.intellij.openapi.application.impl.ApplicationImpl.assertReadAccessAllowed(ApplicationImpl.java:1090)
at com.intellij.psi.impl.source.PsiFileImpl.assertReadAccessAllowed(PsiFileImpl.java:183)
at com.intellij.psi.impl.source.PsiFileImpl.getStubTree(PsiFileImpl.java:591)
at com.intellij.psi.impl.source.PsiFileImpl.getGreenStubTree(PsiFileImpl.java:928)
at com.intellij.psi.impl.source.SpineRef.getGreenStub(SpineRef.java:39)
at com.intellij.extapi.psi.StubBasedPsiElementBase.getGreenStub(StubBasedPsiElementBase.java:374)
at com.intellij.extapi.psi.StubBasedPsiElementBase.getStubOrPsiChild(StubBasedPsiElementBase.java:382)
at com.intellij.extapi.psi.StubBasedPsiElementBase.getRequiredStubOrPsiChild(StubBasedPsiElementBase.java:405)
at com.intellij.psi.impl.source.PsiClassImpl.getModifierList(PsiClassImpl.java:185)
at com.intellij.psi.impl.source.PsiClassImpl.hasModifierProperty(PsiClassImpl.java:190)
at com.intellij.psi.PsiJvmConversionHelper.hasListModifier(PsiJvmConversionHelper.java:63)
at com.intellij.psi.PsiModifierListOwner.hasModifier(PsiModifierListOwner.java:54)
at com.haulmont.studio.intellij.GlobalProjectComponent$MyCreatedInverseEntityAttrListener.onCreatedInverseEntityAttr(SourceFile:76)
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.intellij.util.messages.impl.MessageBusConnectionImpl.deliverMessage(MessageBusConnectionImpl.java:117)
at com.intellij.util.messages.impl.MessageBusImpl.doPumpMessages(MessageBusImpl.java:397)
at com.intellij.util.messages.impl.MessageBusImpl.pumpWaitingBuses(MessageBusImpl.java:358)
at com.intellij.util.messages.impl.MessageBusImpl.pumpMessages(MessageBusImpl.java:347)
at com.intellij.util.messages.impl.MessageBusImpl.pumpMessages(MessageBusImpl.java:331)
at com.intellij.util.messages.impl.MessageBusImpl.sendMessage(MessageBusImpl.java:324)
at com.intellij.util.messages.impl.MessageBusImpl.access$200(MessageBusImpl.java:29)
at com.intellij.util.messages.impl.MessageBusImpl$2.invoke(MessageBusImpl.java:196)
at com.sun.proxy.$Proxy283.onCreatedInverseEntityAttr(Unknown Source)
at com.haulmont.studio.ui.ed.attr.AttributePropertiesPanel$InverseAttributeWindowCloseListener.windowClose(SourceFile:2171)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at com.vaadin.event.ListenerMethod.receiveEvent(ListenerMethod.java:510)
at com.vaadin.event.EventRouter.fireEvent(EventRouter.java:200)
at com.vaadin.event.EventRouter.fireEvent(EventRouter.java:163)
at com.vaadin.server.AbstractClientConnector.fireEvent(AbstractClientConnector.java:1037)
at com.vaadin.ui.Window.fireClose(Window.java:448)
at com.vaadin.ui.UI.removeWindow(UI.java:578)
at com.vaadin.ui.Window.close(Window.java:260)
at com.haulmont.studio.ui.ed.attr.CreateAttributeWindow.lambda$createAddButton$833dd281$1(SourceFile:117)
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.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:444)
at com.vaadin.server.communication.ServerRpcHandler.handleInvocations(ServerRpcHandler.java:409)
at com.vaadin.server.communication.ServerRpcHandler.handleRpc(ServerRpcHandler.java:274)
at com.vaadin.server.communication.UidlRequestHandler.synchronizedHandleRequest(UidlRequestHandler.java:90)
at com.vaadin.server.SynchronizedRequestHandler.handleRequest(SynchronizedRequestHandler.java:41)
at com.vaadin.server.VaadinService.handleRequest(VaadinService.java:1435)
at com.vaadin.server.VaadinServlet.service(VaadinServlet.java:361)
at com.haulmont.studio.ui.app.StudioApplicationServlet.service(SourceFile:81)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:790)
at org.eclipse.jetty.servlet.ServletHolder.handle(ServletHolder.java:812)
at org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:587)
at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:143)
at org.eclipse.jetty.security.SecurityHandler.handle(SecurityHandler.java:577)
at org.eclipse.jetty.server.session.SessionHandler.doHandle(SessionHandler.java:223)
at org.eclipse.jetty.server.handler.ContextHandler.doHandle(ContextHandler.java:1127)
at org.eclipse.jetty.servlet.ServletHandler.doScope(ServletHandler.java:515)
at org.eclipse.jetty.server.session.SessionHandler.doScope(SessionHandler.java:185)
at org.eclipse.jetty.server.handler.ContextHandler.doScope(ContextHandler.java:1061)
at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:141)
at org.eclipse.jetty.server.handler.HandlerList.handle(HandlerList.java:52)
at org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:97)
at org.eclipse.jetty.server.Server.handle(Server.java:499)
at org.eclipse.jetty.server.HttpChannel.handle(HttpChannel.java:311)
at org.eclipse.jetty.server.HttpConnection.onFillable(HttpConnection.java:258)
at org.eclipse.jetty.io.AbstractConnection$2.run(AbstractConnection.java:544)
at org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:635)
at org.eclipse.jetty.util.thread.QueuedThreadPool$3.run(QueuedThreadPool.java:555)
at java.lang.Thread.run(Thread.java:745)