I have managed to trace it to the invokeMethod method of
org.jboss.cache.TreeCache. It seems that the interceptor_chain variable is
null. I am using exactly the same method to initialize the TreeCache instance
(i.e. constructing an InputStream from a the XML resource for the configuration
and passing it and the TreeCache instance to an instance of
PropertyConfigurator)
When using the TreeCache outside of the Eclipse application, the
interceptor_chain variable is initialized to an instance of
org.jboss.cache.interceptors.CreateIfNotExistsInterceptor. When using it inside
of an Eclipse application this initialization is not occuring.
I enabled some additional logging trapped the following exception when starting
the TreeCache service.
Mar 9, 2005 8:00:03 AM com.amaranth.cache.DefaultCacheFactory
SEVERE: org.jboss.cache.DummyTransactionManagerLookup
java.lang.ClassNotFoundException: org.jboss.cache.DummyTransactionManagerLookup
at java.net.URLClassLoader$1.run(Unknown Source)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
at sun.misc.Launcher$AppClassLoader.loadClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
at org.jboss.cache.TreeCache.startService(TreeCache.java:1040)
at com.amaranth.cache.DefaultCacheFactory.(DefaultCacheFactory.java:51)
at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
at sun.reflect.NativeConstructorAccessorImpl.newInstance(Unknown Source)
at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(Unknown
Source)
at java.lang.reflect.Constructor.newInstance(Unknown Source)
at java.lang.Class.newInstance0(Unknown Source)
at java.lang.Class.newInstance(Unknown Source)
at
org.apache.commons.discovery.tools.ClassUtils.newInstance(ClassUtils.java:157)
at
org.apache.commons.discovery.tools.SPInterface.newInstance(SPInterface.java:197)
at
org.apache.commons.discovery.tools.DiscoverClass.newInstance(DiscoverClass.java:579)
at
org.apache.commons.discovery.tools.DiscoverSingleton.find(DiscoverSingleton.java:418)
at
org.apache.commons.discovery.tools.DiscoverSingleton.find(DiscoverSingleton.java:272)
at
com.amaranth.commodity.factory.SimpleCommodityFactory.getCacheFactory(SimpleCommodityFactory.java:202)
at
com.amaranth.commodity.factory.SimpleCommodityFactory.init(SimpleCommodityFactory.java:48)
at
com.amaranth.commodity.factory.SimpleCommodityFactory.(SimpleCommodityFactory.java:44)
at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
at sun.reflect.NativeConstructorAccessorImpl.newInstance(Unknown Source)
at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(Unknown
Source)
at java.lang.reflect.Constructor.newInstance(Unknown Source)
at java.lang.Class.newInstance0(Unknown Source)
at java.lang.Class.newInstance(Unknown Source)
at
org.apache.commons.discovery.tools.ClassUtils.newInstance(ClassUtils.java:157)
at
org.apache.commons.discovery.tools.SPInterface.newInstance(SPInterface.java:197)
at
org.apache.commons.discovery.tools.DiscoverClass.newInstance(DiscoverClass.java:579)
at
org.apache.commons.discovery.tools.DiscoverSingleton.find(DiscoverSingleton.java:418)
at
org.apache.commons.discovery.tools.DiscoverSingleton.find(DiscoverSingleton.java:272)
at
com.amaranth.energy.workbench.rcp.CommodityView$ViewContentProvider.getElements(CommodityView.java:45)
at
org.eclipse.jface.viewers.StructuredViewer.getRawChildren(StructuredViewer.java:766)
at
org.eclipse.jface.viewers.AbstractTreeViewer.getRawChildren(AbstractTreeViewer.java:747)
at
org.eclipse.jface.viewers.StructuredViewer.getFilteredChildren(StructuredViewer.java:708)
at
org.eclipse.jface.viewers.StructuredViewer.getSortedChildren(StructuredViewer.java:823)
at
org.eclipse.jface.viewers.AbstractTreeViewer$1.run(AbstractTreeViewer.java:381)
at org.eclipse.swt.custom.BusyIndicator.showWhile(BusyIndicator.java:69)
at
org.eclipse.jface.viewers.AbstractTreeViewer.createChildren(AbstractTreeViewer.java:363)
at
org.eclipse.jface.viewers.AbstractTreeViewer$5.run(AbstractTreeViewer.java:834)
at
org.eclipse.jface.viewers.StructuredViewer.preservingSelection(StructuredViewer.java:1109)
at
org.eclipse.jface.viewers.AbstractTreeViewer.inputChanged(AbstractTreeViewer.java:824)
at
org.eclipse.jface.viewers.ContentViewer.setInput(ContentViewer.java:248)
at
org.eclipse.jface.viewers.StructuredViewer.setInput(StructuredViewer.java:1323)
at
com.amaranth.energy.workbench.rcp.CommodityView.createPartControl(CommodityView.java:98)
at org.eclipse.ui.internal.PartPane$2.run(PartPane.java:148)
at
org.eclipse.core.internal.runtime.InternalPlatform.run(InternalPlatform.java:1015)
at org.eclipse.core.runtime.Platform.run(Platform.java:757)
at
org.eclipse.ui.internal.PartPane.doCreateChildControl(PartPane.java:144)
at
org.eclipse.ui.internal.ViewPane.doCreateChildControl(ViewPane.java:135)
at
org.eclipse.ui.internal.PartPane.createChildControl(PartPane.java:349)
at org.eclipse.ui.internal.ViewFactory$1.run(ViewFactory.java:405)
at
org.eclipse.core.internal.runtime.InternalPlatform.run(InternalPlatform.java:1015)
at org.eclipse.core.runtime.Platform.run(Platform.java:757)
at
org.eclipse.ui.internal.ViewFactory.busyRestoreView(ViewFactory.java:289)
at org.eclipse.ui.internal.ViewFactory$2.run(ViewFactory.java:589)
at org.eclipse.swt.custom.BusyIndicator.showWhile(BusyIndicator.java:69)
at org.eclipse.ui.internal.ViewFactory.restoreView(ViewFactory.java:586)
at
org.eclipse.ui.internal.ViewFactory$ViewReference.getPart(ViewFactory.java:108)
at org.eclipse.ui.internal.PartPane.setVisible(PartPane.java:329)
at org.eclipse.ui.internal.ViewPane.setVisible(ViewPane.java:607)
at
org.eclipse.ui.internal.presentations.PresentablePart.setVisible(PresentablePart.java:126)
at
org.eclipse.ui.internal.presentations.newapi.PresentablePartFolder.select(PresentablePartFolder.java:266)
at
org.eclipse.ui.internal.presentations.newapi.LeftToRightTabOrder.select(LeftToRightTabOrder.java:65)
at
org.eclipse.ui.internal.presentations.newapi.TabbedStackPresentation.selectPart(TabbedStackPresentation.java:381)
at
org.eclipse.ui.internal.PartStack.refreshPresentationSelection(PartStack.java:1051)
at org.eclipse.ui.internal.PartStack.setSelection(PartStack.java:1009)
at org.eclipse.ui.internal.PartStack.showPart(PartStack.java:1200)
at org.eclipse.ui.internal.PartStack.createControl(PartStack.java:521)
at org.eclipse.ui.internal.PartStack.createControl(PartStack.java:473)
at
org.eclipse.ui.internal.PartSashContainer.createControl(PartSashContainer.java:485)
at
org.eclipse.ui.internal.PerspectiveHelper.activate(PerspectiveHelper.java:230)
at org.eclipse.ui.internal.Perspective.onActivate(Perspective.java:777)
at
org.eclipse.ui.internal.WorkbenchPage.onActivate(WorkbenchPage.java:2133)
at
org.eclipse.ui.internal.WorkbenchWindow$4.run(WorkbenchWindow.java:2235)
at org.eclipse.swt.custom.BusyIndicator.showWhile(BusyIndicator.java:69)
at
org.eclipse.ui.internal.WorkbenchWindow.setActivePage(WorkbenchWindow.java:2221)
at
org.eclipse.ui.internal.WorkbenchWindow.busyOpenPage(WorkbenchWindow.java:572)
at
org.eclipse.ui.internal.Workbench.busyOpenWorkbenchWindow(Workbench.java:587)
at
org.eclipse.ui.internal.Workbench.openFirstTimeWindow(Workbench.java:1209)
at
org.eclipse.ui.internal.WorkbenchConfigurer.openFirstTimeWindow(WorkbenchConfigurer.java:178)
at
org.eclipse.ui.application.WorkbenchAdvisor.openWindows(WorkbenchAdvisor.java:717)
at org.eclipse.ui.internal.Workbench.init(Workbench.java:918)
at org.eclipse.ui.internal.Workbench.runUI(Workbench.java:1554)
at
org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:293)
at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:144)
at
com.amaranth.energy.workbench.rcp.WorkbenchApplication.run(WorkbenchApplication.java:21)
at
org.eclipse.core.internal.runtime.PlatformActivator$1.run(PlatformActivator.java:228)
at
org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:333)
at
org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:150)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at org.eclipse.core.launcher.Main.invokeFramework(Main.java:268)
at org.eclipse.core.launcher.Main.basicRun(Main.java:260)
at org.eclipse.core.launcher.Main.run(Main.java:887)
at org.eclipse.core.launcher.Main.main(Main.java:871)
The Thread.currentThread().getContextClassLoader() is an instance of
sun.misc.Launcher$AppClassLoader which is just contains the Eclipse launcher's
jar (eclipse/startup.jar)
The class loader that should be associated with classes, and is associated with
both the TreeCache and PropertyConfigurator instance, is an instance of
org.eclipse.core.runtime.adaptor.EclipseClassLoader that contains the classpath
of all of the jars in the bundled application.
I guess I'll have to dig a bit deeper into Eclipse to determine classloading
dependencies during start-up.
In the meantime, the following code snippet around seems to work around the
problem.
ClassLoader cl = Thread.currentThread().getContextClassLoader();
Thread.currentThread().setContextClassLoader(getClass().getClassLoader());
this.tc.startService();
Thread.currentThread().setContextClassLoader(cl);
Where this.tc is the TreeCache instance.
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