Bug 168175

Created attachment 84397 [details]
stacktrace

this issue is a result of an earlier problem (as shown in messages log of the exception reporter)

reassigning to ide/ergonomics as it seems to be FoD related.


SEVERE [org.openide.util.RequestProcessor]: Error in RequestProcessor
org.netbeans.modules.ide.ergonomics.fod.FeatureProjectFactory$FeatureNonProject$FeatureOpenHook
java.lang.ClassNotFoundException: org.netbeans.modules.j2ee.deployment.devmodules.spi.J2eeModuleImplementation2
	at java.net.URLClassLoader$1.run(URLClassLoader.java:200)
	at java.security.AccessController.doPrivileged(Native Method)
	at java.net.URLClassLoader.findClass(URLClassLoader.java:188)
	at java.lang.ClassLoader.loadClass(ClassLoader.java:306)
	at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:276)
	at java.lang.ClassLoader.loadClass(ClassLoader.java:251)
	at org.netbeans.ProxyClassLoader.loadClass(ProxyClassLoader.java:257)
Caused: java.lang.ClassNotFoundException: org.netbeans.modules.j2ee.deployment.devmodules.spi.J2eeModuleImplementation2
starting from ModuleCL@1548012[org.netbeans.modules.maven.j2ee] with possible defining loaders
[ModuleCL@75f756[org.netbeans.modules.j2eeserver]] and declared parents
[ModuleCL@1676b0c[org.netbeans.modules.schema2beans], ModuleCL@191cde0[org.netbeans.modules.j2ee.api.ejbmodule],
ModuleCL@171a7e4[org.netbeans.modules.j2ee.common], ModuleCL@1082823[org.jdesktop.layout],
ModuleCL@b37db4[org.netbeans.modules.j2ee.persistenceapi], ModuleCL@1b06a21[org.netbeans.modules.projectuiapi],
ModuleCL@e4e8c[org.netbeans.modules.maven.model], ModuleCL@bfc15b[org.netbeans.modules.j2ee.persistence],
ModuleCL@95648d[org.netbeans.modules.j2ee.dd.webservice], ModuleCL@1b3f915[org.netbeans.modules.maven.embedder], ...22 more]
	at org.netbeans.ProxyClassLoader.loadClass(ProxyClassLoader.java:259)
	at java.lang.ClassLoader.loadClass(ClassLoader.java:251)
	at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:319)
Caused: java.lang.NoClassDefFoundError: org/netbeans/modules/j2ee/deployment/devmodules/spi/J2eeModuleImplementation2
	at java.lang.ClassLoader.defineClass1(Native Method)
	at java.lang.ClassLoader.defineClass(ClassLoader.java:620)
	at org.netbeans.JarClassLoader.doLoadClass(JarClassLoader.java:240)
	at org.netbeans.ProxyClassLoader.selfLoadClass(ProxyClassLoader.java:294)
Caused: java.lang.NoClassDefFoundError: org/netbeans/modules/j2ee/deployment/devmodules/spi/J2eeModuleImplementation2
while loading org.netbeans.modules.maven.j2ee.weborg.netbeans.modules.maven.j2ee.web.WebModuleImpl; see
http://wiki.netbeans.org/DevFaqTroubleshootClassNotFound
	at org.netbeans.ProxyClassLoader.selfLoadClass(ProxyClassLoader.java:298)
	at org.netbeans.ProxyClassLoader.loadClass(ProxyClassLoader.java:224)
	at java.lang.ClassLoader.loadClass(ClassLoader.java:251)
	at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:319)
	at org.netbeans.modules.maven.j2ee.web.WebModuleProviderImpl.<init>(WebModuleProviderImpl.java:89)
	at org.netbeans.modules.maven.j2ee.J2eeLookupProvider$Provider.doCheckJ2ee(J2eeLookupProvider.java:145)
	at org.netbeans.modules.maven.j2ee.J2eeLookupProvider$Provider.checkJ2ee(J2eeLookupProvider.java:121)
	at org.netbeans.modules.maven.j2ee.J2eeLookupProvider$Provider.<init>(J2eeLookupProvider.java:108)
	at org.netbeans.modules.maven.j2ee.J2eeLookupProvider.createAdditionalLookup(J2eeLookupProvider.java:80)
	at org.netbeans.spi.project.support.LookupProviderSupport$DelegatingLookupImpl.doDelegate(LookupProviderSupport.java:180)
	at org.netbeans.spi.project.support.LookupProviderSupport$DelegatingLookupImpl.<init>(LookupProviderSupport.java:128)
	at org.netbeans.spi.project.support.LookupProviderSupport$DelegatingLookupImpl.<init>(LookupProviderSupport.java:117)
	at org.netbeans.spi.project.support.LookupProviderSupport.createCompositeLookup(LookupProviderSupport.java:89)
	at org.netbeans.modules.maven.NbMavenProjectImpl$LazyLookup.beforeLookup(NbMavenProjectImpl.java:846)
	at org.openide.util.lookup.ProxyLookup$R.myBeforeLookup(ProxyLookup.java:645)
	at org.openide.util.lookup.ProxyLookup$R.computeResult(ProxyLookup.java:518)
	at org.openide.util.lookup.ProxyLookup$R.allInstances(ProxyLookup.java:489)
	at org.openide.util.Lookup.lookupAll(Lookup.java:245)
	at org.netbeans.modules.ide.ergonomics.fod.FeatureProjectFactory$FeatureDelegate.associate(FeatureProjectFactory.java:520)
	at
org.netbeans.modules.ide.ergonomics.fod.FeatureProjectFactory$FeatureNonProject.switchToReal(FeatureProjectFactory.java:370)
	at
org.netbeans.modules.ide.ergonomics.fod.FeatureProjectFactory$FeatureNonProject.stateChanged(FeatureProjectFactory.java:354)
	at org.openide.util.WeakListenerImpl$Change.stateChanged(WeakListenerImpl.java:321)
	at org.openide.util.ChangeSupport.fireChange(ChangeSupport.java:123)
	at org.openide.util.ChangeSupport.fireChange(ChangeSupport.java:109)
	at org.netbeans.modules.ide.ergonomics.fod.FeatureManager.propertyChange(FeatureManager.java:254)
	at java.beans.PropertyChangeSupport.firePropertyChange(PropertyChangeSupport.java:339)
	at java.beans.PropertyChangeSupport.firePropertyChange(PropertyChangeSupport.java:276)
	at org.openide.modules.ModuleInfo.firePropertyChange(ModuleInfo.java:152)
	at org.netbeans.Module.firePropertyChange0(Module.java:582)
	at org.netbeans.ChangeFirer.fire(ChangeFirer.java:107)
	at org.netbeans.ModuleManager.enable(ModuleManager.java:932)
	at org.netbeans.modules.autoupdate.services.OperationSupportImpl$ForEnable.enable(OperationSupportImpl.java:179)
	at org.netbeans.modules.autoupdate.services.OperationSupportImpl$ForEnable.access$1100(OperationSupportImpl.java:122)
	at org.netbeans.modules.autoupdate.services.OperationSupportImpl$ForEnable$1.run(OperationSupportImpl.java:153)
	at org.netbeans.modules.autoupdate.services.OperationSupportImpl$ForEnable$1.run(OperationSupportImpl.java:151)
	at org.openide.util.Mutex.writeAccess(Mutex.java:433)
	at org.netbeans.modules.autoupdate.services.OperationSupportImpl$ForEnable.doOperation(OperationSupportImpl.java:151)
	at org.netbeans.api.autoupdate.OperationSupport.doOperation(OperationSupport.java:67)
	at org.netbeans.modules.ide.ergonomics.fod.ModulesActivator.doEnableModules(ModulesActivator.java:148)
	at org.netbeans.modules.ide.ergonomics.fod.ModulesActivator.enableModules(ModulesActivator.java:113)
	at org.netbeans.modules.ide.ergonomics.fod.ModulesActivator.access$000(ModulesActivator.java:61)
	at org.netbeans.modules.ide.ergonomics.fod.ModulesActivator$1.run(ModulesActivator.java:106)
	at org.openide.util.RequestProcessor$Task.run(RequestProcessor.java:577)
	at org.openide.util.RequestProcessor$Processor.doEvaluate(RequestProcessor.java:1072)
	at org.openide.util.RequestProcessor$Task.waitFinished(RequestProcessor.java:742)
	at
org.netbeans.modules.ide.ergonomics.fod.FeatureProjectFactory$FeatureNonProject$FeatureOpenHook.run(FeatureProjectFactory.java:420)
	at org.openide.util.RequestProcessor$Task.run(RequestProcessor.java:577)

Caused by a bug in classloading:

Caused: java.lang.ClassNotFoundException: 
org.netbeans.modules.j2ee.deployment.devmodules.spi.J2eeModuleImplementation2 starting from ModuleCL@1548012
[org.netbeans.modules.maven.j2ee] with possible defining loaders [ModuleCL@75f756[org.netbeans.modules.j2eeserver]] 
and declared parents [ModuleCL@1676b0c[org.netbeans.modules.schema2beans], ModuleCL@191cde0
[org.netbeans.modules.j2ee.api.ejbmodule], ModuleCL@171a7e4[org.netbeans.modules.j2ee.common], ModuleCL@1082823
[org.jdesktop.layout], ModuleCL@b37db4[org.netbeans.modules.j2ee.persistenceapi], ModuleCL@1b06a21
[org.netbeans.modules.projectuiapi], ModuleCL@e4e8c[org.netbeans.modules.maven.model], 
ModuleCL@bfc15b[org.netbeans.modules.j2ee.persistence], ModuleCL@95648d[org.netbeans.modules.j2ee.dd.webservice], 
ModuleCL@1b3f915[org.netbeans.modules.maven.embedder], ...22 more]
	at org.netbeans.ProxyClassLoader.loadClass(ProxyClassLoader.java:259)
	at java.lang.ClassLoader.loadClass(ClassLoader.java:251)
	at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:319)
Caused: java.lang.NoClassDefFoundError: org/netbeans/modules/j2ee/deployment/devmodules/spi/J2eeModuleImplementation2
	at java.lang.ClassLoader.defineClass1(Native Method)
	at java.lang.ClassLoader.defineClass(ClassLoader.java:620)
	at org.netbeans.JarClassLoader.doLoadClass(JarClassLoader.java:240)
	at org.netbeans.ProxyClassLoader.selfLoadClass(ProxyClassLoader.java:294)
Caused: java.lang.NoClassDefFoundError: org/netbeans/modules/j2ee/deployment/devmodules/spi/J2eeModuleImplementation2 
while loading org.netbeans.modules.maven.j2ee.weborg.netbeans.modules.maven.j2ee.web.WebModuleImpl; see 
http://wiki.netbeans.org/DevFaqTroubleshootClassNotFound
	at org.netbeans.ProxyClassLoader.selfLoadClass(ProxyClassLoader.java:298)
	at org.netbeans.ProxyClassLoader.loadClass(ProxyClassLoader.java:224)
	at java.lang.ClassLoader.loadClass(ClassLoader.java:251)
	at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:319)

Not known to be reproducible. Anyway it is likely the fault of FOD that it is running user code inside of
ModuleManager.enable.

What usercode you are talking about? FoD is using ModuleInfo and attaches listener to it, that is all. If that is the 
user code you are referring to, and you don't want it to run, you need to change module system to not call the 
listeners in such situations.

ModuleInfo fires a change when one occurs. It is the responsibility of the listener not to run user code (here, somehow
triggering NbMavenProjectImpl) within the dynamic scope of that listener callback. That said, I have no idea what the
actual cause of the problem is, nor could I guess without some way to reproduce.

Created attachment 84764 [details]
The project that raises the error

I've attached a compressed copy of the project. It is a small one, but I had to hide datasource information as well as a
SELECT statement (confidenciality issues). I hope this helps...

The exact identity of the project is likely irrelevant; just matters that it is a Maven war project. Anyway I cannot
reproduce by running NB incl. ergonomics on a fresh userdir and opening that project; works fine.