openhab-core: IllegalStateException during startup when validating DSL rules

With 3.1.0.M2, we are seeing the following exception during startup, if (any!) DSL rule is present:

22:57:55.644 [main] INFO  o.o.c.m.c.i.ModelRepositoryImpl:100 - Loading model 'demo.rules'
22:58:00.015 [main] ERROR o.e.x.c.t.a.i.AbstractClassMirror:95 - resource is empty: java:/Objects/org.openhab.core.model.script.actions.Semantics
java.lang.IllegalStateException
	at org.eclipse.xtext.common.types.access.impl.AbstractClassMirror.getEObject(AbstractClassMirror.java:95)
	at org.eclipse.xtext.common.types.access.TypeResource.getEObject(TypeResource.java:95)
	at org.eclipse.emf.ecore.resource.impl.ResourceSetImpl.getEObject(ResourceSetImpl.java:223)
	at org.eclipse.xtext.common.types.access.impl.IndexedJvmTypeAccess.getIndexedJvmType(IndexedJvmTypeAccess.java:80)
	at org.eclipse.xtext.common.types.access.impl.IndexedJvmTypeAccess.getIndexedJvmType(IndexedJvmTypeAccess.java:70)
	at org.eclipse.xtext.common.types.access.reflect.ReflectionTypeProvider.findTypeByClass(ReflectionTypeProvider.java:146)
	at org.eclipse.xtext.common.types.access.reflect.ReflectionTypeProvider.findTypeByName(ReflectionTypeProvider.java:88)
	at org.eclipse.xtext.common.types.util.TypeReferences.findDeclaredType(TypeReferences.java:256)
	at org.eclipse.xtext.common.types.util.TypeReferences.findDeclaredType(TypeReferences.java:233)
	at org.eclipse.xtext.xbase.scoping.batch.ImplicitlyImportedFeatures.getTypes(ImplicitlyImportedFeatures.java:82)
	at org.eclipse.xtext.xbase.scoping.batch.ImplicitlyImportedFeatures.getExtensionClasses(ImplicitlyImportedFeatures.java:76)
	at org.eclipse.xtext.xbase.scoping.batch.XbaseBatchScopeProvider.newSession(XbaseBatchScopeProvider.java:121)
	at org.eclipse.xtext.xbase.typesystem.internal.DefaultReentrantTypeResolver.resolve(DefaultReentrantTypeResolver.java:164)
	at org.eclipse.xtext.xbase.typesystem.internal.DefaultReentrantTypeResolver.reentrantResolve(DefaultReentrantTypeResolver.java:140)
	at org.eclipse.xtext.xbase.typesystem.internal.CachingBatchTypeResolver$LazyResolvedTypes.resolveTypes(CachingBatchTypeResolver.java:81)
	at org.eclipse.xtext.xbase.typesystem.internal.CachingBatchTypeResolver$2.process(CachingBatchTypeResolver.java:58)
	at org.eclipse.xtext.xbase.typesystem.internal.CachingBatchTypeResolver$2.process(CachingBatchTypeResolver.java:54)
	at org.eclipse.xtext.util.concurrent.IUnitOfWork$Void.exec(IUnitOfWork.java:38)
	at org.eclipse.xtext.util.OnChangeEvictingCache.execWithoutCacheClear(OnChangeEvictingCache.java:135)
	at org.eclipse.xtext.xbase.typesystem.internal.CachingBatchTypeResolver.doResolveTypes(CachingBatchTypeResolver.java:54)
	at org.eclipse.xtext.xbase.typesystem.internal.AbstractBatchTypeResolver.resolveTypes(AbstractBatchTypeResolver.java:70)
	at org.eclipse.xtext.xbase.resource.BatchLinkingService.resolveBatched(BatchLinkingService.java:61)
	at org.eclipse.xtext.xbase.resource.BatchLinkingService.resolveBatched(BatchLinkingService.java:42)
	at org.eclipse.xtext.xbase.resource.BatchLinkableResource.getEObject(BatchLinkableResource.java:118)
	at org.eclipse.emf.ecore.resource.impl.ResourceSetImpl.getEObject(ResourceSetImpl.java:223)
	at org.eclipse.emf.ecore.util.EcoreUtil.resolve(EcoreUtil.java:209)
	at org.eclipse.emf.ecore.util.EcoreUtil.resolve(EcoreUtil.java:269)
	at org.eclipse.emf.ecore.impl.BasicEObjectImpl.eResolveProxy(BasicEObjectImpl.java:1477)
	at org.eclipse.xtext.xbase.impl.XAbstractFeatureCallImplCustom.getFeature(XAbstractFeatureCallImplCustom.java:49)
	at org.eclipse.xtext.xbase.impl.XAbstractFeatureCallImpl.eGet(XAbstractFeatureCallImpl.java:529)
	at org.eclipse.xtext.xbase.impl.XFeatureCallImpl.eGet(XFeatureCallImpl.java:265)
	at org.eclipse.emf.ecore.impl.BasicEObjectImpl.eGet(BasicEObjectImpl.java:1011)
	at org.eclipse.emf.ecore.impl.BasicEObjectImpl.eGet(BasicEObjectImpl.java:1003)
	at org.eclipse.emf.ecore.util.EContentsEList$FeatureIteratorImpl.hasNext(EContentsEList.java:439)
	at org.eclipse.emf.ecore.util.EObjectValidator.validate_EveryReferenceIsContained(EObjectValidator.java:782)
	at org.eclipse.emf.ecore.util.EObjectValidator.validate_EveryDefaultConstraint(EObjectValidator.java:355)
	at org.eclipse.emf.ecore.util.EObjectValidator$DynamicEClassValidator.validate(EObjectValidator.java:1426)
	at org.eclipse.emf.ecore.util.EObjectValidator$DynamicEClassValidator.validate(EObjectValidator.java:1429)
	at org.eclipse.emf.ecore.util.EObjectValidator$DynamicEClassValidator.validate(EObjectValidator.java:1429)
	at org.eclipse.emf.ecore.util.EObjectValidator.validate(EObjectValidator.java:333)
	at org.eclipse.xtext.validation.CompositeEValidator.validate(CompositeEValidator.java:151)
	at org.eclipse.emf.ecore.util.Diagnostician.doValidate(Diagnostician.java:257)
	at org.eclipse.emf.ecore.util.Diagnostician.validate(Diagnostician.java:244)
	at org.eclipse.emf.ecore.util.Diagnostician.validate(Diagnostician.java:201)
	at org.eclipse.emf.ecore.util.Diagnostician.validate(Diagnostician.java:131)
	at org.openhab.core.model.core.internal.ModelRepositoryImpl.lambda$2(ModelRepositoryImpl.java:280)
	at org.openhab.core.model.core.internal.SafeEMFImpl.call(SafeEMFImpl.java:30)
	at org.openhab.core.model.core.internal.ModelRepositoryImpl.validateModel(ModelRepositoryImpl.java:280)
	at org.openhab.core.model.core.internal.ModelRepositoryImpl.addOrRefreshModel(ModelRepositoryImpl.java:105)
	at org.openhab.core.model.core.internal.folder.FolderObserver.checkFile(FolderObserver.java:249)
	at org.openhab.core.model.core.internal.folder.FolderObserver.processIgnoredFiles(FolderObserver.java:151)
	at org.openhab.core.model.core.internal.folder.FolderObserver.addModelParser(FolderObserver.java:94)
	at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
	at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.base/java.lang.reflect.Method.invoke(Method.java:566)
	at org.apache.felix.scr.impl.inject.methods.BaseMethod.invokeMethod(BaseMethod.java:228)
	at org.apache.felix.scr.impl.inject.methods.BaseMethod.access$500(BaseMethod.java:41)
	at org.apache.felix.scr.impl.inject.methods.BaseMethod$Resolved.invoke(BaseMethod.java:664)
	at org.apache.felix.scr.impl.inject.methods.BaseMethod.invoke(BaseMethod.java:510)
	at org.apache.felix.scr.impl.inject.methods.BindMethod.invoke(BindMethod.java:42)
	at org.apache.felix.scr.impl.manager.DependencyManager.doInvokeBindMethod(DependencyManager.java:1811)
	at org.apache.felix.scr.impl.manager.DependencyManager.invokeBindMethod(DependencyManager.java:1786)
	at org.apache.felix.scr.impl.manager.SingleComponentManager.invokeBindMethod(SingleComponentManager.java:436)
	at org.apache.felix.scr.impl.manager.DependencyManager$MultipleDynamicCustomizer.addedService(DependencyManager.java:333)
	at org.apache.felix.scr.impl.manager.DependencyManager$MultipleDynamicCustomizer.addedService(DependencyManager.java:302)
	at org.apache.felix.scr.impl.manager.ServiceTracker$Tracked.customizerAdded(ServiceTracker.java:1216)
	at org.apache.felix.scr.impl.manager.ServiceTracker$Tracked.customizerAdded(ServiceTracker.java:1137)
	at org.apache.felix.scr.impl.manager.ServiceTracker$AbstractTracked.trackAdding(ServiceTracker.java:944)
	at org.apache.felix.scr.impl.manager.ServiceTracker$AbstractTracked.track(ServiceTracker.java:880)
	at org.apache.felix.scr.impl.manager.ServiceTracker$Tracked.serviceChanged(ServiceTracker.java:1168)
	at org.apache.felix.scr.impl.BundleComponentActivator$ListenerInfo.serviceChanged(BundleComponentActivator.java:125)
	at org.eclipse.osgi.internal.serviceregistry.FilteredServiceListener.serviceChanged(FilteredServiceListener.java:112)
	at org.eclipse.osgi.internal.framework.BundleContextImpl.dispatchEvent(BundleContextImpl.java:923)
	at org.eclipse.osgi.framework.eventmgr.EventManager.dispatchEvent(EventManager.java:233)
	at org.eclipse.osgi.framework.eventmgr.ListenerQueue.dispatchEventSynchronous(ListenerQueue.java:151)
	at org.eclipse.osgi.internal.serviceregistry.ServiceRegistry.publishServiceEventPrivileged(ServiceRegistry.java:865)
	at org.eclipse.osgi.internal.serviceregistry.ServiceRegistry.publishServiceEvent(ServiceRegistry.java:804)
	at org.eclipse.osgi.internal.serviceregistry.ServiceRegistrationImpl.register(ServiceRegistrationImpl.java:130)
	at org.eclipse.osgi.internal.serviceregistry.ServiceRegistry.registerService(ServiceRegistry.java:228)
	at org.eclipse.osgi.internal.framework.BundleContextImpl.registerService(BundleContextImpl.java:472)
	at org.apache.felix.scr.impl.manager.AbstractComponentManager$3.register(AbstractComponentManager.java:906)
	at org.apache.felix.scr.impl.manager.AbstractComponentManager$3.register(AbstractComponentManager.java:892)
	at org.apache.felix.scr.impl.manager.RegistrationManager.changeRegistration(RegistrationManager.java:128)
	at org.apache.felix.scr.impl.manager.AbstractComponentManager.registerService(AbstractComponentManager.java:959)
	at org.apache.felix.scr.impl.manager.AbstractComponentManager.activateInternal(AbstractComponentManager.java:732)
	at org.apache.felix.scr.impl.manager.DependencyManager$SingleStaticCustomizer.addedService(DependencyManager.java:1053)
	at org.apache.felix.scr.impl.manager.DependencyManager$SingleStaticCustomizer.addedService(DependencyManager.java:1007)
	at org.apache.felix.scr.impl.manager.ServiceTracker$Tracked.customizerAdded(ServiceTracker.java:1216)
	at org.apache.felix.scr.impl.manager.ServiceTracker$Tracked.customizerAdded(ServiceTracker.java:1137)
	at org.apache.felix.scr.impl.manager.ServiceTracker$AbstractTracked.trackAdding(ServiceTracker.java:944)
	at org.apache.felix.scr.impl.manager.ServiceTracker$AbstractTracked.track(ServiceTracker.java:880)
	at org.apache.felix.scr.impl.manager.ServiceTracker$Tracked.serviceChanged(ServiceTracker.java:1168)
	at org.apache.felix.scr.impl.BundleComponentActivator$ListenerInfo.serviceChanged(BundleComponentActivator.java:125)
	at org.eclipse.osgi.internal.serviceregistry.FilteredServiceListener.serviceChanged(FilteredServiceListener.java:112)
	at org.eclipse.osgi.internal.framework.BundleContextImpl.dispatchEvent(BundleContextImpl.java:923)
	at org.eclipse.osgi.framework.eventmgr.EventManager.dispatchEvent(EventManager.java:233)
	at org.eclipse.osgi.framework.eventmgr.ListenerQueue.dispatchEventSynchronous(ListenerQueue.java:151)
	at org.eclipse.osgi.internal.serviceregistry.ServiceRegistry.publishServiceEventPrivileged(ServiceRegistry.java:865)
	at org.eclipse.osgi.internal.serviceregistry.ServiceRegistry.publishServiceEvent(ServiceRegistry.java:804)
	at org.eclipse.osgi.internal.serviceregistry.ServiceRegistrationImpl.register(ServiceRegistrationImpl.java:130)
	at org.eclipse.osgi.internal.serviceregistry.ServiceRegistry.registerService(ServiceRegistry.java:228)
	at org.eclipse.osgi.internal.framework.BundleContextImpl.registerService(BundleContextImpl.java:472)
	at org.apache.felix.scr.impl.manager.AbstractComponentManager$3.register(AbstractComponentManager.java:906)
	at org.apache.felix.scr.impl.manager.AbstractComponentManager$3.register(AbstractComponentManager.java:892)
	at org.apache.felix.scr.impl.manager.RegistrationManager.changeRegistration(RegistrationManager.java:128)
	at org.apache.felix.scr.impl.manager.AbstractComponentManager.registerService(AbstractComponentManager.java:959)
	at org.apache.felix.scr.impl.manager.AbstractComponentManager.activateInternal(AbstractComponentManager.java:732)
	at org.apache.felix.scr.impl.manager.DependencyManager$SingleStaticCustomizer.addedService(DependencyManager.java:1053)
	at org.apache.felix.scr.impl.manager.DependencyManager$SingleStaticCustomizer.addedService(DependencyManager.java:1007)
	at org.apache.felix.scr.impl.manager.ServiceTracker$Tracked.customizerAdded(ServiceTracker.java:1216)
	at org.apache.felix.scr.impl.manager.ServiceTracker$Tracked.customizerAdded(ServiceTracker.java:1137)
	at org.apache.felix.scr.impl.manager.ServiceTracker$AbstractTracked.trackAdding(ServiceTracker.java:944)
	at org.apache.felix.scr.impl.manager.ServiceTracker$AbstractTracked.track(ServiceTracker.java:880)
	at org.apache.felix.scr.impl.manager.ServiceTracker$Tracked.serviceChanged(ServiceTracker.java:1168)
	at org.apache.felix.scr.impl.BundleComponentActivator$ListenerInfo.serviceChanged(BundleComponentActivator.java:125)
	at org.eclipse.osgi.internal.serviceregistry.FilteredServiceListener.serviceChanged(FilteredServiceListener.java:112)
	at org.eclipse.osgi.internal.framework.BundleContextImpl.dispatchEvent(BundleContextImpl.java:923)
	at org.eclipse.osgi.framework.eventmgr.EventManager.dispatchEvent(EventManager.java:233)
	at org.eclipse.osgi.framework.eventmgr.ListenerQueue.dispatchEventSynchronous(ListenerQueue.java:151)
	at org.eclipse.osgi.internal.serviceregistry.ServiceRegistry.publishServiceEventPrivileged(ServiceRegistry.java:865)
	at org.eclipse.osgi.internal.serviceregistry.ServiceRegistry.publishServiceEvent(ServiceRegistry.java:804)
	at org.eclipse.osgi.internal.serviceregistry.ServiceRegistrationImpl.register(ServiceRegistrationImpl.java:130)
	at org.eclipse.osgi.internal.serviceregistry.ServiceRegistry.registerService(ServiceRegistry.java:228)
	at org.eclipse.osgi.internal.framework.BundleContextImpl.registerService(BundleContextImpl.java:472)
	at org.apache.felix.scr.impl.manager.AbstractComponentManager$3.register(AbstractComponentManager.java:906)
	at org.apache.felix.scr.impl.manager.AbstractComponentManager$3.register(AbstractComponentManager.java:892)
	at org.apache.felix.scr.impl.manager.RegistrationManager.changeRegistration(RegistrationManager.java:128)
	at org.apache.felix.scr.impl.manager.AbstractComponentManager.registerService(AbstractComponentManager.java:959)
	at org.apache.felix.scr.impl.manager.AbstractComponentManager.activateInternal(AbstractComponentManager.java:732)
	at org.apache.felix.scr.impl.manager.DependencyManager$SingleStaticCustomizer.addedService(DependencyManager.java:1053)
	at org.apache.felix.scr.impl.manager.DependencyManager$SingleStaticCustomizer.addedService(DependencyManager.java:1007)
	at org.apache.felix.scr.impl.manager.ServiceTracker$Tracked.customizerAdded(ServiceTracker.java:1216)
	at org.apache.felix.scr.impl.manager.ServiceTracker$Tracked.customizerAdded(ServiceTracker.java:1137)
	at org.apache.felix.scr.impl.manager.ServiceTracker$AbstractTracked.trackAdding(ServiceTracker.java:944)
	at org.apache.felix.scr.impl.manager.ServiceTracker$AbstractTracked.track(ServiceTracker.java:880)
	at org.apache.felix.scr.impl.manager.ServiceTracker$Tracked.serviceChanged(ServiceTracker.java:1168)
	at org.apache.felix.scr.impl.BundleComponentActivator$ListenerInfo.serviceChanged(BundleComponentActivator.java:125)
	at org.eclipse.osgi.internal.serviceregistry.FilteredServiceListener.serviceChanged(FilteredServiceListener.java:112)
	at org.eclipse.osgi.internal.framework.BundleContextImpl.dispatchEvent(BundleContextImpl.java:923)
	at org.eclipse.osgi.framework.eventmgr.EventManager.dispatchEvent(EventManager.java:233)
	at org.eclipse.osgi.framework.eventmgr.ListenerQueue.dispatchEventSynchronous(ListenerQueue.java:151)
	at org.eclipse.osgi.internal.serviceregistry.ServiceRegistry.publishServiceEventPrivileged(ServiceRegistry.java:865)
	at org.eclipse.osgi.internal.serviceregistry.ServiceRegistry.publishServiceEvent(ServiceRegistry.java:804)
	at org.eclipse.osgi.internal.serviceregistry.ServiceRegistrationImpl.register(ServiceRegistrationImpl.java:130)
	at org.eclipse.osgi.internal.serviceregistry.ServiceRegistry.registerService(ServiceRegistry.java:228)
	at org.eclipse.osgi.internal.framework.BundleContextImpl.registerService(BundleContextImpl.java:472)
	at org.apache.felix.scr.impl.manager.AbstractComponentManager$3.register(AbstractComponentManager.java:906)
	at org.apache.felix.scr.impl.manager.AbstractComponentManager$3.register(AbstractComponentManager.java:892)
	at org.apache.felix.scr.impl.manager.RegistrationManager.changeRegistration(RegistrationManager.java:128)
	at org.apache.felix.scr.impl.manager.AbstractComponentManager.registerService(AbstractComponentManager.java:959)
	at org.apache.felix.scr.impl.manager.AbstractComponentManager.activateInternal(AbstractComponentManager.java:732)
	at org.apache.felix.scr.impl.manager.AbstractComponentManager.enableInternal(AbstractComponentManager.java:666)
	at org.apache.felix.scr.impl.manager.AbstractComponentManager.enable(AbstractComponentManager.java:432)
	at org.apache.felix.scr.impl.manager.ConfigurableComponentHolder.enableComponents(ConfigurableComponentHolder.java:665)
	at org.apache.felix.scr.impl.BundleComponentActivator.initialEnable(BundleComponentActivator.java:339)
	at org.apache.felix.scr.impl.Activator.loadComponents(Activator.java:381)
	at org.apache.felix.scr.impl.Activator.access$200(Activator.java:49)
	at org.apache.felix.scr.impl.Activator$ScrExtension.start(Activator.java:263)
	at org.apache.felix.scr.impl.AbstractExtender.createExtension(AbstractExtender.java:196)
	at org.apache.felix.scr.impl.AbstractExtender.modifiedBundle(AbstractExtender.java:169)
	at org.apache.felix.scr.impl.AbstractExtender.modifiedBundle(AbstractExtender.java:49)
	at org.osgi.util.tracker.BundleTracker$Tracked.customizerModified(BundleTracker.java:488)
	at org.osgi.util.tracker.BundleTracker$Tracked.customizerModified(BundleTracker.java:1)
	at org.osgi.util.tracker.AbstractTracked.track(AbstractTracked.java:232)
	at org.osgi.util.tracker.BundleTracker$Tracked.bundleChanged(BundleTracker.java:450)
	at org.eclipse.osgi.internal.framework.BundleContextImpl.dispatchEvent(BundleContextImpl.java:911)
	at org.eclipse.osgi.framework.eventmgr.EventManager.dispatchEvent(EventManager.java:233)
	at org.eclipse.osgi.framework.eventmgr.ListenerQueue.dispatchEventSynchronous(ListenerQueue.java:151)
	at org.eclipse.osgi.internal.framework.EquinoxEventPublisher.publishBundleEventPrivileged(EquinoxEventPublisher.java:233)
	at org.eclipse.osgi.internal.framework.EquinoxEventPublisher.publishBundleEvent(EquinoxEventPublisher.java:140)
	at org.eclipse.osgi.internal.framework.EquinoxEventPublisher.publishBundleEvent(EquinoxEventPublisher.java:132)
	at org.eclipse.osgi.internal.framework.EquinoxContainerAdaptor.publishModuleEvent(EquinoxContainerAdaptor.java:194)
	at org.eclipse.osgi.container.Module.publishEvent(Module.java:479)
	at org.eclipse.osgi.container.Module.start(Module.java:470)
	at org.eclipse.osgi.internal.framework.EquinoxBundle.start(EquinoxBundle.java:431)
	at aQute.launcher.Launcher.start(Launcher.java:674)
	at aQute.launcher.Launcher.startBundles(Launcher.java:654)
	at aQute.launcher.Launcher.activate(Launcher.java:560)
	at aQute.launcher.Launcher.launch(Launcher.java:400)
	at aQute.launcher.Launcher.run(Launcher.java:181)
	at aQute.launcher.Launcher.main(Launcher.java:157)
	at aQute.launcher.pre.EmbeddedLauncher.executeWithRunPath(EmbeddedLauncher.java:170)
	at aQute.launcher.pre.EmbeddedLauncher.findAndExecute(EmbeddedLauncher.java:135)
	at aQute.launcher.pre.EmbeddedLauncher.main(EmbeddedLauncher.java:52)

About this issue

Original URL
State: closed
Created 3 years ago
Comments: 21 (18 by maintainers)

Most upvoted comments

Wow. And thank you @kaikreuzer 😃

andrewfg on Mar 30, 2021

Ok, deep down in the debugger I found this line that helped me solving the mystery:

[org.eclipse.emf.ecore.resource.impl.ResourceSetImpl$1DiagnosticWrappedException: org.eclipse.xtext.common.types.access.TypeResource$CannotLoadTypeResourceException: Type org.openhab.core.semantics.model.Property not present]

Xtext wasn’t able to resolve classes in the package org.openhab.core.semantics.model, since this package wasn’t imported by the script/model bundles as none of its classes are used - they are only implicitly referred to by org.openhab.core.semantics.SemanticsPredicates. This is actually a very bad API design (I can say this, because iirc it was me who created it), since classes that are required for one API should reside in the same package.

I have therefore created https://github.com/openhab/openhab-core/pull/2263 as a fix.

kaikreuzer on Mar 29, 2021