Export to XML gives NullPointerException

0
Hi, we’re using the export/import feature in the questionnaire module to export surveys. When calling the Export to XML microflow, the export to xml action with export mapping fails and returns a nullpointer exception.  Do you have suggestions or? Edit: Turns out it’s a known issue in 7.23.11  java.lang.NullPointerException: null at com.mendix.integration.exporter.DeepAssociationRetriever.$anonfun$createRetrievers$2(AssociationRetriever.scala:68) at com.mendix.integration.exporter.DeepAssociationRetriever.$anonfun$batchRetriever$1(AssociationRetriever.scala:92) at scala.collection.Iterator$$anon$9.next(Iterator.scala:173) at scala.collection.Iterator$$anon$10.next(Iterator.scala:459) at scala.collection.TraversableOnce$FlattenOps$$anon$2.hasNext(TraversableOnce.scala:467) at scala.collection.Iterator$$anon$10.hasNext(Iterator.scala:458) at com.mendix.integration.model.collection.IteratorWithCurrent.hasNext(IteratorWithCurrent.scala:8) at com.mendix.integration.exporter.DeepAssociationRetriever.fromNextResult$1(AssociationRetriever.scala:51) at com.mendix.integration.exporter.DeepAssociationRetriever.$anonfun$retrieve$2(AssociationRetriever.scala:53) at scala.Option.getOrElse(Option.scala:138) at com.mendix.integration.exporter.DeepAssociationRetriever.retrieve(AssociationRetriever.scala:53) at com.mendix.integration.exporter.AssociationRetriever$.$anonfun$apply$2(AssociationRetriever.scala:31) at com.mendix.integration.exporter.Exporter.getObjectsByAssociation(Exporter.scala:330) at com.mendix.integration.exporter.Exporter.$anonfun$getMendixObjects$1(Exporter.scala:316) at scala.Option.flatMap(Option.scala:188) at com.mendix.integration.exporter.Exporter.getMendixObjects(Exporter.scala:316) at com.mendix.integration.exporter.Exporter.handleObjectMapping(Exporter.scala:75) at com.mendix.integration.exporter.Exporter.$anonfun$exportObject$2(Exporter.scala:143) at com.mendix.integration.exporter.Exporter.$anonfun$exportObject$2$adapted(Exporter.scala:137) at scala.collection.Iterator.foreach(Iterator.scala:941) at scala.collection.Iterator.foreach$(Iterator.scala:941) at scala.collection.AbstractIterator.foreach(Iterator.scala:1429) at scala.collection.IterableLike.foreach(IterableLike.scala:74) at scala.collection.IterableLike.foreach$(IterableLike.scala:73) at scala.collection.AbstractIterable.foreach(Iterable.scala:56) at com.mendix.integration.exporter.Exporter.$anonfun$exportObject$1(Exporter.scala:137) at com.mendix.integration.exporter.Exporter.$anonfun$exportObject$1$adapted(Exporter.scala:134) at scala.Option.foreach(Option.scala:274) at com.mendix.integration.exporter.Exporter.exportObject(Exporter.scala:134) at com.mendix.integration.exporter.Exporter.handleObjectMapping(Exporter.scala:73) at com.mendix.integration.exporter.Exporter.$anonfun$exportObject$2(Exporter.scala:143) at com.mendix.integration.exporter.Exporter.$anonfun$exportObject$2$adapted(Exporter.scala:137) at scala.collection.Iterator.foreach(Iterator.scala:941) at scala.collection.Iterator.foreach$(Iterator.scala:941) at scala.collection.AbstractIterator.foreach(Iterator.scala:1429) at scala.collection.IterableLike.foreach(IterableLike.scala:74) at scala.collection.IterableLike.foreach$(IterableLike.scala:73) at scala.collection.AbstractIterable.foreach(Iterable.scala:56) at com.mendix.integration.exporter.Exporter.$anonfun$exportObject$1(Exporter.scala:137) at com.mendix.integration.exporter.Exporter.$anonfun$exportObject$1$adapted(Exporter.scala:134) at scala.Option.foreach(Option.scala:274) at com.mendix.integration.exporter.Exporter.exportObject(Exporter.scala:134) at com.mendix.integration.exporter.Exporter.$anonfun$exportListOfObjects$2(Exporter.scala:121) at com.mendix.integration.exporter.Exporter.$anonfun$exportListOfObjects$2$adapted(Exporter.scala:120) at scala.collection.immutable.List.foreach(List.scala:392) at com.mendix.integration.exporter.Exporter.$anonfun$exportListOfObjects$1(Exporter.scala:120) at com.mendix.integration.exporter.Exporter.withContainer(Exporter.scala:100) at com.mendix.integration.exporter.Exporter.exportListOfObjects(Exporter.scala:119) at com.mendix.integration.exporter.Exporter.handleObjectMapping(Exporter.scala:84) at com.mendix.integration.exporter.Exporter.$anonfun$exportObject$2(Exporter.scala:143) at com.mendix.integration.exporter.Exporter.$anonfun$exportObject$2$adapted(Exporter.scala:137) at scala.collection.Iterator.foreach(Iterator.scala:941) at scala.collection.Iterator.foreach$(Iterator.scala:941) at scala.collection.AbstractIterator.foreach(Iterator.scala:1429) at scala.collection.IterableLike.foreach(IterableLike.scala:74) at scala.collection.IterableLike.foreach$(IterableLike.scala:73) at scala.collection.AbstractIterable.foreach(Iterable.scala:56) at com.mendix.integration.exporter.Exporter.$anonfun$exportObject$1(Exporter.scala:137) at com.mendix.integration.exporter.Exporter.$anonfun$exportObject$1$adapted(Exporter.scala:134) at scala.Option.foreach(Option.scala:274) at com.mendix.integration.exporter.Exporter.exportObject(Exporter.scala:134) at com.mendix.integration.exporter.Exporter.handleObjectMapping(Exporter.scala:73) at com.mendix.integration.exporter.Exporter.$anonfun$exportObject$2(Exporter.scala:143) at com.mendix.integration.exporter.Exporter.$anonfun$exportObject$2$adapted(Exporter.scala:137) at scala.collection.Iterator.foreach(Iterator.scala:941) at scala.collection.Iterator.foreach$(Iterator.scala:941) at scala.collection.AbstractIterator.foreach(Iterator.scala:1429) at scala.collection.IterableLike.foreach(IterableLike.scala:74) at scala.collection.IterableLike.foreach$(IterableLike.scala:73) at scala.collection.AbstractIterable.foreach(Iterable.scala:56) at com.mendix.integration.exporter.Exporter.$anonfun$exportObject$1(Exporter.scala:137) at com.mendix.integration.exporter.Exporter.$anonfun$exportObject$1$adapted(Exporter.scala:134) at scala.Option.foreach(Option.scala:274) at com.mendix.integration.exporter.Exporter.exportObject(Exporter.scala:134) at com.mendix.integration.exporter.Exporter.handleObjectMapping(Exporter.scala:82) at com.mendix.integration.exporter.Exporter.export(Exporter.scala:50) at com.mendix.integration.exporter.Exporter.export$(Exporter.scala:49) at com.mendix.integration.exporter.xml.XmlExporter.export(XmlExporter.scala:15) at com.mendix.integration.exporter.Exporter.exportToStream(Exporter.scala:60) at com.mendix.integration.exporter.Exporter.exportToStream$(Exporter.scala:59) at com.mendix.integration.exporter.xml.XmlExporter.exportToStream(XmlExporter.scala:15) at com.mendix.integration.internal.InternalIntegration.$anonfun$doExportToStream$2(InternalIntegration.scala:148) at com.mendix.integration.util.AutoCloseableUtil$.using(AutoCloseableUtil.scala:10) at com.mendix.integration.internal.InternalIntegration.doExportToStream(InternalIntegration.scala:147) at com.mendix.integration.internal.InternalIntegration.doExportToStream$(InternalIntegration.scala:134) at com.mendix.integration.internal.InternalIntegrationImpl.doExportToStream(InternalIntegrationImpl.scala:41) at com.mendix.integration.actions.microflow.ExportAction.com$mendix$integration$actions$microflow$ExportAction$$exportToStream(ExportAction.scala:42) at com.mendix.integration.actions.microflow.ExportAction$$anonfun$exportToFile$1.applyOrElse(ExportAction.scala:48) at com.mendix.integration.actions.microflow.ExportAction$$anonfun$exportToFile$1.applyOrElse(ExportAction.scala:46) at scala.PartialFunction$Lifted.apply(PartialFunction.scala:228) at scala.PartialFunction$Lifted.apply(PartialFunction.scala:224) at scala.Option.collect(Option.scala:299) at com.mendix.integration.actions.microflow.ExportAction.exportToFile(ExportAction.scala:46) at com.mendix.integration.actions.microflow.ExportAction.execute(ExportAction.scala:35) at com.mendix.modules.microflowengine.microflow.impl.MicroflowObject.execute(MicroflowObject.java:47) at com.mendix.modules.microflowengine.microflow.impl.MicroflowImpl.executeAfterBreakingIfNecessary(MicroflowImpl.java:201) at com.mendix.modules.microflowengine.microflow.impl.MicroflowImpl.executeAction(MicroflowImpl.java:157) at com.mendix.systemwideinterfaces.core.UserAction.execute(UserAction.java:46) at com.mendix.basis.actionmanagement.CoreActionHandlerImpl.doCall(CoreActionHandlerImpl.scala:79) at com.mendix.basis.actionmanagement.CoreActionHandlerImpl.call(CoreActionHandlerImpl.scala:57) at com.mendix.core.actionmanagement.CoreAction.call(CoreAction.java:55) at com.mendix.basis.actionmanagement.ActionManagerBase$1.execute(ActionManagerBase.java:150) at com.mendix.util.classloading.Runner.doRunUsingClassLoaderOf(Runner.java:32) at com.mendix.basis.actionmanagement.ActionManagerBase.executeSync(ActionManagerBase.java:155) at com.mendix.basis.component.InternalCoreBase.executeSync(InternalCoreBase.java:493) at com.mendix.modules.microflowengine.actions.SubMicroflowAction.execute(SubMicroflowAction.scala:51) at com.mendix.modules.microflowengine.microflow.impl.MicroflowObject.execute(MicroflowObject.java:47) at com.mendix.modules.microflowengine.microflow.impl.MicroflowImpl.executeAfterBreakingIfNecessary(MicroflowImpl.java:201) at com.mendix.modules.microflowengine.microflow.impl.MicroflowImpl.executeAction(MicroflowImpl.java:157) at com.mendix.systemwideinterfaces.core.UserAction.execute(UserAction.java:46) at com.mendix.basis.actionmanagement.CoreActionHandlerImpl.doCall(CoreActionHandlerImpl.scala:79) at com.mendix.basis.actionmanagement.CoreActionHandlerImpl.call(CoreActionHandlerImpl.scala:57) at com.mendix.core.actionmanagement.CoreAction.call(CoreAction.java:55) at com.mendix.basis.actionmanagement.ActionManagerBase$1.execute(ActionManagerBase.java:150) at com.mendix.util.classloading.Runner.doRunUsingClassLoaderOf(Runner.java:32) at com.mendix.basis.actionmanagement.ActionManagerBase.executeSync(ActionManagerBase.java:155) at com.mendix.basis.component.InternalCoreBase.execute(InternalCoreBase.java:383) at com.mendix.basis.component.InternalCoreBase.execute(InternalCoreBase.java:398) at com.mendix.webui.actions.client.ExecuteMicroflowAction.runMicroflow(ExecuteMicroflowAction.scala:46) at com.mendix.webui.actions.client.ExecuteMicroflowAction.apply(ExecuteMicroflowAction.scala:32) at com.mendix.webui.actions.client.ExecuteMicroflowAction.apply(ExecuteMicroflowAction.scala:15) at com.mendix.webui.actions.client.RegularClientAction.$anonfun$execute$4(RegularClientAction.scala:46) at com.mendix.webui.requesthandling.helpers.StateHandling.withState(StateHandling.scala:33) at com.mendix.webui.requesthandling.helpers.StateHandling.withState$(StateHandling.scala:21) at com.mendix.webui.actions.client.RegularClientAction.withState(RegularClientAction.scala:21) at com.mendix.webui.actions.client.RegularClientAction.$anonfun$execute$3(RegularClientAction.scala:44) at scala.util.Try$.apply(Try.scala:213) at com.mendix.webui.actions.client.RegularClientAction.$anonfun$execute$2(RegularClientAction.scala:44) at com.mendix.webui.actions.client.RegularClientAction.$anonfun$execute$2$adapted(RegularClientAction.scala:42) at com.mendix.webui.requesthandling.helpers.ContextHandling.$anonfun$inContext$6(ContextHandling.scala:47) at scala.runtime.java8.JFunction0$mcV$sp.apply(JFunction0$mcV$sp.java:23) at com.mendix.basis.actionmanagement.IMonitoredAction$$anon$1.execute(IMonitoredAction.scala:47) at com.mendix.util.classloading.Runner.doRunUsingClassLoaderOf(Runner.java:32) at com.mendix.basis.actionmanagement.IMonitoredAction.monitor(IMonitoredAction.scala:49) at com.mendix.basis.actionmanagement.IMonitoredAction.monitor$(IMonitoredAction.scala:25) at com.mendix.webui.requesthandling.helpers.ContextHandling$ClientMonitoredAction.monitor(ContextHandling.scala:59) at com.mendix.webui.requesthandling.helpers.ContextHandling.inContext(ContextHandling.scala:47) at com.mendix.webui.requesthandling.helpers.ContextHandling.inContext$(ContextHandling.scala:27) at com.mendix.webui.actions.client.RegularClientAction.inContext(RegularClientAction.scala:21) at com.mendix.webui.requesthandling.helpers.ContextHandling.inContext(ContextHandling.scala:24) at com.mendix.webui.requesthandling.helpers.ContextHandling.inContext$(ContextHandling.scala:19) at com.mendix.webui.actions.client.RegularClientAction.inContext(RegularClientAction.scala:21) at com.mendix.webui.actions.client.RegularClientAction.$anonfun$execute$1(RegularClientAction.scala:42) at scala.runtime.java8.JFunction0$mcV$sp.apply(JFunction0$mcV$sp.java:23) at com.mendix.webui.requesthandling.helpers.ProfileHandling.profileRequest(ProfileHandling.scala:14) at com.mendix.webui.requesthandling.helpers.ProfileHandling.profileRequest$(ProfileHandling.scala:10) at com.mendix.webui.actions.client.RegularClientAction.profileRequest(RegularClientAction.scala:21) at com.mendix.webui.actions.client.RegularClientAction.execute(RegularClientAction.scala:39) at com.mendix.webui.requesthandling.ClientRequestHandler.handleAction(ClientRequestHandler.scala:124) at com.mendix.webui.requesthandling.ClientRequestHandler.processRequest(ClientRequestHandler.scala:101) at com.mendix.externalinterface.connector.RequestHandler.doProcessRequest(RequestHandler.java:40) at com.mendix.external.connector.MxRuntimeConnector$1.execute(MxRuntimeConnector.java:72) at com.mendix.external.connector.MxRuntimeConnector$1.execute(MxRuntimeConnector.java:69) at com.mendix.util.classloading.Runner.doRunUsingClassLoaderOf(Runner.java:32) at com.mendix.external.connector.MxRuntimeConnector.processRequest(MxRuntimeConnector.java:75) at com.mendix.basis.impl.MxRuntimeImpl.processRequest(MxRuntimeImpl.java:909) at com.mendix.m2ee.appcontainer.server.handler.RuntimeHandler.service(RuntimeHandler.java:42) at javax.servlet.http.HttpServlet.service(HttpServlet.java:790) at org.eclipse.jetty.servlet.ServletHolder.handle(ServletHolder.java:867) at org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:542) at org.eclipse.jetty.server.handler.ScopedHandler.nextHandle(ScopedHandler.java:255) at org.eclipse.jetty.server.session.SessionHandler.doHandle(SessionHandler.java:1588) at org.eclipse.jetty.server.handler.ScopedHandler.nextHandle(ScopedHandler.java:255) at org.eclipse.jetty.server.handler.ContextHandler.doHandle(ContextHandler.java:1345) at org.eclipse.jetty.server.handler.ScopedHandler.nextScope(ScopedHandler.java:203) at org.eclipse.jetty.servlet.ServletHandler.doScope(ServletHandler.java:480) at org.eclipse.jetty.server.session.SessionHandler.doScope(SessionHandler.java:1557) at org.eclipse.jetty.server.handler.ScopedHandler.nextScope(ScopedHandler.java:201) at org.eclipse.jetty.server.handler.ContextHandler.doScope(ContextHandler.java:1247) at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:144) at org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:132) at org.eclipse.jetty.server.Server.handle(Server.java:502) at org.eclipse.jetty.server.HttpChannel.handle(HttpChannel.java:364) at org.eclipse.jetty.server.HttpConnection.onFillable(HttpConnection.java:260) at org.eclipse.jetty.io.AbstractConnection$ReadCallback.succeeded(AbstractConnection.java:305) at org.eclipse.jetty.io.FillInterest.fillable(FillInterest.java:103) at org.eclipse.jetty.io.ChannelEndPoint$2.run(ChannelEndPoint.java:118) at org.eclipse.jetty.util.thread.strategy.EatWhatYouKill.runTask(EatWhatYouKill.java:333) at org.eclipse.jetty.util.thread.strategy.EatWhatYouKill.doProduce(EatWhatYouKill.java:310) at org.eclipse.jetty.util.thread.strategy.EatWhatYouKill.tryProduce(EatWhatYouKill.java:168) at org.eclipse.jetty.util.thread.strategy.EatWhatYouKill.run(EatWhatYouKill.java:126) at org.eclipse.jetty.util.thread.ReservedThreadExecutor$ReservedThread.run(ReservedThreadExecutor.java:366) at org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:765) at org.eclipse.jetty.util.thread.QueuedThreadPool$2.run(QueuedThreadPool.java:683) at java.lang.Thread.run(Thread.java:748)  
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1 answers
0

I think, in the export mapping, it is expecting some associated object to be exported. Since the object is not found, it is throwing error.

When you are able to find the object, you can mark that object as nillable for the export mapping or make sure to create that object needed.

We are using the questionnaire module along with export and import. But we did not faced any issues.

answered