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[aspectj-users] ajdt breaks unrelated unit tests in headless mode 
Hello,
I have a unit test that creates couple of java projects (no AJDT nature!) and then uses JavaRuntime.resolveRuntimeClasspathEntry to do some validation. I usually run this unit test in headless mode and it works unless my target platform has AJDT installed. With AJDT installed, however, the unit test only works in UI mode but fails in headless mode with "Plug-in org.eclipse.ajdt.ui was unable to load class..." error (see below).
Does AJDT really have to be activated for completely unrelated projects? Can you at least move CachedRuntimeClasspathEntryResolver to AJDT core? 

Here is the error that I get.
org.eclipse.core.runtime.CoreException: Plug-in org.eclipse.ajdt.ui was unable to load class org.eclipse.ajdt.internal.ui.ajde.CachedRuntimeClasspathEntryResolver. at org.eclipse.core.internal.registry.osgi.RegistryStrategyOSGI.throwException(RegistryStrategyOSGI.java:180) at org.eclipse.core.internal.registry.osgi.RegistryStrategyOSGI.createExecutableExtension(RegistryStrategyOSGI.java:162) at org.eclipse.core.internal.registry.ExtensionRegistry.createExecutableExtension(ExtensionRegistry.java:867) at org.eclipse.core.internal.registry.ConfigurationElement.createExecutableExtension(ConfigurationElement.java:243) at org.eclipse.core.internal.registry.ConfigurationElementHandle.createExecutableExtension(ConfigurationElementHandle.java:51) at org.eclipse.jdt.internal.launching.RuntimeClasspathEntryResolver.getResolver(RuntimeClasspathEntryResolver.java:52) at org.eclipse.jdt.internal.launching.RuntimeClasspathEntryResolver.resolveRuntimeClasspathEntry(RuntimeClasspathEntryResolver.java:44) at org.eclipse.jdt.launching.JavaRuntime.resolveRuntimeClasspathEntry(JavaRuntime.java:906) at org.maven.ide.eclipse.jdt.internal.launch.MavenRuntimeClasspathProvider.addStandardClasspathEntries(MavenRuntimeClasspathProvider.java:128) at org.maven.ide.eclipse.jdt.internal.launch.MavenRuntimeClasspathProvider.addProjectEntries(MavenRuntimeClasspathProvider.java:282) at org.maven.ide.eclipse.jdt.internal.launch.MavenRuntimeClasspathProvider.resolveClasspath(MavenRuntimeClasspathProvider.java:114) at org.maven.ide.eclipse.tests.ClasspathProviderTest.testCustomBuildpath(ClasspathProviderTest.java:326) 
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) 
	at java.lang.reflect.Method.invoke(Method.java:585)
	at junit.framework.TestCase.runTest(TestCase.java:164)
	at junit.framework.TestCase.runBare(TestCase.java:130)
	at junit.framework.TestResult$1.protect(TestResult.java:106)
	at junit.framework.TestResult.runProtected(TestResult.java:124)
	at junit.framework.TestResult.run(TestResult.java:109)
	at junit.framework.TestCase.run(TestCase.java:120)
	at junit.framework.TestSuite.runTest(TestSuite.java:230)
	at junit.framework.TestSuite.run(TestSuite.java:225)
at org.eclipse.jdt.internal.junit.runner.junit3.JUnit3TestReference.run(JUnit3TestReference.java:130) at org.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:38) at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:460) at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:673) at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:386) at org.eclipse.pde.internal.junit.runtime.RemotePluginTestRunner.main(RemotePluginTestRunner.java:62) at org.eclipse.pde.internal.junit.runtime.CoreTestApplication.run(CoreTestApplication.java:23) 
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) 
	at java.lang.reflect.Method.invoke(Method.java:585)
at org.eclipse.equinox.internal.app.EclipseAppContainer.callMethodWithException(EclipseAppContainer.java:574) at org.eclipse.equinox.internal.app.EclipseAppHandle.run(EclipseAppHandle.java:195) at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.runApplication(EclipseAppLauncher.java:110) at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.start(EclipseAppLauncher.java:79) at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:382) at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:179) 
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) 
	at java.lang.reflect.Method.invoke(Method.java:585)
	at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:549)
	at org.eclipse.equinox.launcher.Main.basicRun(Main.java:504)
	at org.eclipse.equinox.launcher.Main.run(Main.java:1236)
	at org.eclipse.equinox.launcher.Main.main(Main.java:1212)
Caused by: org.eclipse.core.runtime.internal.adaptor.EclipseLazyStarter$TerminatingClassNotFoundException: An error occurred while automatically activating bundle org.eclipse.ajdt.ui (252). at org.eclipse.core.runtime.internal.adaptor.EclipseLazyStarter.postFindLocalClass(EclipseLazyStarter.java:125) at org.eclipse.osgi.baseadaptor.loader.ClasspathManager.findLocalClass(ClasspathManager.java:427) at org.eclipse.osgi.internal.baseadaptor.DefaultClassLoader.findLocalClass(DefaultClassLoader.java:193) at org.eclipse.osgi.framework.internal.core.BundleLoader.findLocalClass(BundleLoader.java:368) at org.eclipse.osgi.framework.internal.core.BundleLoader.findClassInternal(BundleLoader.java:444) at org.eclipse.osgi.framework.internal.core.BundleLoader.findClass(BundleLoader.java:397) at org.eclipse.osgi.framework.internal.core.BundleLoader.findClass(BundleLoader.java:385) at org.eclipse.osgi.internal.baseadaptor.DefaultClassLoader.loadClass(DefaultClassLoader.java:87) 
	at java.lang.ClassLoader.loadClass(ClassLoader.java:251)
at org.eclipse.osgi.framework.internal.core.BundleLoader.loadClass(BundleLoader.java:313) at org.eclipse.osgi.framework.internal.core.BundleHost.loadClass(BundleHost.java:227) at org.eclipse.osgi.framework.internal.core.AbstractBundle.loadClass(AbstractBundle.java:1274) at org.eclipse.core.internal.registry.osgi.RegistryStrategyOSGI.createExecutableExtension(RegistryStrategyOSGI.java:160) 
	... 47 more
Caused by: org.osgi.framework.BundleException: Exception in org.eclipse.ajdt.ui.AspectJUIPlugin.start() of bundle org.eclipse.ajdt.ui. at org.eclipse.osgi.framework.internal.core.BundleContextImpl.startActivator(BundleContextImpl.java:1028) at org.eclipse.osgi.framework.internal.core.BundleContextImpl.start(BundleContextImpl.java:984) at org.eclipse.osgi.framework.internal.core.BundleHost.startWorker(BundleHost.java:346) at org.eclipse.osgi.framework.internal.core.AbstractBundle.start(AbstractBundle.java:265) at org.eclipse.osgi.framework.util.SecureAction.start(SecureAction.java:400) at org.eclipse.core.runtime.internal.adaptor.EclipseLazyStarter.postFindLocalClass(EclipseLazyStarter.java:111) 
	... 59 more
Caused by: java.lang.NoClassDefFoundError: org/eclipse/jdt/internal/ui/preferences/PropertyAndPreferencePage 
	at java.lang.ClassLoader.defineClass1(Native Method)
	at java.lang.ClassLoader.defineClass(ClassLoader.java:620)
at org.eclipse.osgi.internal.baseadaptor.DefaultClassLoader.defineClass(DefaultClassLoader.java:165) at org.eclipse.osgi.baseadaptor.loader.ClasspathManager.defineClass(ClasspathManager.java:554) at org.eclipse.osgi.baseadaptor.loader.ClasspathManager.findClassImpl(ClasspathManager.java:524) at org.eclipse.osgi.baseadaptor.loader.ClasspathManager.findLocalClassImpl(ClasspathManager.java:455) at org.eclipse.osgi.baseadaptor.loader.ClasspathManager.findLocalClass_LockClassLoader(ClasspathManager.java:443) at org.eclipse.osgi.baseadaptor.loader.ClasspathManager.findLocalClass(ClasspathManager.java:423) at org.eclipse.osgi.internal.baseadaptor.DefaultClassLoader.findLocalClass(DefaultClassLoader.java:193) at org.eclipse.osgi.framework.internal.core.BundleLoader.findLocalClass(BundleLoader.java:368) at org.eclipse.osgi.framework.internal.core.BundleLoader.findClassInternal(BundleLoader.java:444) at org.eclipse.osgi.framework.internal.core.BundleLoader.findClass(BundleLoader.java:397) at org.eclipse.osgi.framework.internal.core.BundleLoader.findClass(BundleLoader.java:385) at org.eclipse.osgi.internal.baseadaptor.DefaultClassLoader.loadClass(DefaultClassLoader.java:87) 
	at java.lang.ClassLoader.loadClass(ClassLoader.java:251)
	at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:319)
at org.eclipse.ajdt.ui.AspectJUIPlugin.initializeDefaultPreferences(AspectJUIPlugin.java:367) at org.eclipse.ui.plugin.AbstractUIPlugin.initializeDefaultPluginPreferences(AbstractUIPlugin.java:358) at org.eclipse.core.runtime.Plugin.internalInitializeDefaultPluginPreferences(Plugin.java:449) at org.eclipse.core.internal.preferences.legacy.InitLegacyPreferences.init(InitLegacyPreferences.java:52) at org.eclipse.core.internal.preferences.PreferenceServiceRegistryHelper.applyRuntimeDefaults(PreferenceServiceRegistryHelper.java:146) at org.eclipse.core.internal.preferences.PreferencesService.applyRuntimeDefaults(PreferencesService.java:367) at org.eclipse.core.internal.preferences.DefaultPreferences.applyRuntimeDefaults(DefaultPreferences.java:163) at org.eclipse.core.internal.preferences.DefaultPreferences.loadDefaults(DefaultPreferences.java:236) at org.eclipse.core.internal.preferences.DefaultPreferences.load(DefaultPreferences.java:232) at org.eclipse.core.internal.preferences.EclipsePreferences.create(EclipsePreferences.java:307) at org.eclipse.core.internal.preferences.EclipsePreferences.internalNode(EclipsePreferences.java:543) at org.eclipse.core.internal.preferences.EclipsePreferences.node(EclipsePreferences.java:662) at org.eclipse.core.internal.preferences.AbstractScope.getNode(AbstractScope.java:38) at org.eclipse.core.runtime.preferences.DefaultScope.getNode(DefaultScope.java:68) at org.eclipse.ui.preferences.ScopedPreferenceStore.getDefaultPreferences(ScopedPreferenceStore.java:250) at org.eclipse.ui.preferences.ScopedPreferenceStore.getPreferenceNodes(ScopedPreferenceStore.java:285) at org.eclipse.ui.preferences.ScopedPreferenceStore.internalGet(ScopedPreferenceStore.java:475) at org.eclipse.ui.preferences.ScopedPreferenceStore.getString(ScopedPreferenceStore.java:535) at org.eclipse.ajdt.ui.AspectJUIPlugin.checkAspectJVersion(AspectJUIPlugin.java:188) 
	at org.eclipse.ajdt.ui.AspectJUIPlugin.start(AspectJUIPlugin.java:305)
at org.eclipse.osgi.framework.internal.core.BundleContextImpl$2.run(BundleContextImpl.java:1009) 
	at java.security.AccessController.doPrivileged(Native Method)
at org.eclipse.osgi.framework.internal.core.BundleContextImpl.startActivator(BundleContextImpl.java:1003) 
	... 64 more



--
Regards,
Igor

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