Issue with LookupField using OptionsMap - NullPointerException - FYI - SOLVED

Hello guys,

I did experience an issue with CUBA v6.9.5 when trying to use a LookupField with an OptionsMap, having also definied an OptionsDatasource.
I know it is no common sense to do this, but i thought its helpfull to share it anyways:

Lookup Field XML:

<lookupField id="selectedAgKonditionen"
                                         caption="msg://chooseKondition"
                                         height="29px"
                                         optionsDatasource="agKonditionenDs"
                                         width="400px"/>

I set the OptionsMap in the Controller like this:

Map<String, UUID> konditionenMap = new LinkedHashMap<>();
					for (AgKonditionen resultKonditionen : resultKonditionenList) {
						konditionenMap.put(resultKonditionen.getAgKondiBezeichnung(), resultKonditionen.getId());
					}
					selectedAgKonditionen.setOptionsMap(konditionenMap);

The Lookup Field displays fine in the application, but throws a “NullPointerException” when selecting one value of the Drop-down:

image

java.lang.NullPointerException
	at com.haulmont.cuba.web.gui.components.WebLookupField.lambda$attachListener$4850968e$1(WebLookupField.java:204)
	at com.haulmont.cuba.web.gui.components.WebLookupField$$Lambda$81/450075588.valueChange(Unknown Source)
	at sun.reflect.GeneratedMethodAccessor147.invoke(Unknown Source)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:497)
	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.AbstractField.fireValueChange(AbstractField.java:1199)
	at com.vaadin.ui.AbstractField.setValue(AbstractField.java:600)
	at com.vaadin.ui.AbstractSelect.setValue(AbstractSelect.java:738)
	at com.vaadin.ui.AbstractField.setValue(AbstractField.java:494)
	at com.vaadin.ui.ComboBox.changeVariables(ComboBox.java:750)
	at com.haulmont.cuba.web.toolkit.ui.CubaComboBox.changeVariables(CubaComboBox.java:167)
	at com.vaadin.server.communication.ServerRpcHandler.changeVariables(ServerRpcHandler.java:623)
	at com.vaadin.server.communication.ServerRpcHandler.handleInvocation(ServerRpcHandler.java:470)
	at com.vaadin.server.communication.ServerRpcHandler.handleInvocations(ServerRpcHandler.java:413)
	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.cuba.web.sys.CubaApplicationServlet.serviceAppRequest(CubaApplicationServlet.java:312)
	at com.haulmont.cuba.web.sys.CubaApplicationServlet.service(CubaApplicationServlet.java:203)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:742)
	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:52)
	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:107)
	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:478)
	at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:140)
	at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:81)
	at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:650)
	at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:87)
	at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:342)
	at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:803)
	at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:66)
	at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:868)
	at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1459)
	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)

Removing the set OptionsDatasource from the XML solves this.

Best Regards
Daniel

Hello Daniel,

I guess the main problem is your map contains UUID instead of an entity type. There is no need to remove optionsDatasource, try the following code:

Map<String, AgKonditionen> konditionenMap = new LinkedHashMap<>();
for (AgKonditionen resultKonditionen : resultKonditionenList) {
    konditionenMap.put(resultKonditionen.getAgKondiBezeichnung(), resultKonditionen);
}
selectedAgKonditionen.setOptionsMap(konditionenMap);

Another way not using options map is adding @NamePattern("%s|yourProperty") annotation to AgKonditionen entity. Then you can use setOptionsList:

selectedAgKonditionen.setOptionsList(resultKonditionenList);