I found the solution for this. It = is a generic problem and not specific to XMLBeans jars. The external jars = used in any eclipse plugin project have to be added in the Bundle-Classpath entry = in manifest.mf (this can be done using the runtime tab of = plugin.xml)

From: = Murali Gunasekaran [mailto:Murali_Gunasekaran@webmethods.com]
Sent: Saturday, December = 23, 2006 2:05 AM
To: = user@xmlbeans.apache.org
Subject: RE: Eclipse = plugin Exception: java.lang.NoClassDefFoundError: org = /apache/xmlbeans/XmlException

Thanks. Here is the complete stack = trace. Most of it is related to the plugin code. The line where the exception = occurs (getElements) is where the class containing the XMLBeans code is accessed (is not = part of the trace).

!ENTRY org.eclipse.ui 4 0 = 2006-12-22 18:37:13.377

!MESSAGE = org/apache/xmlbeans/XmlException

!STACK = 0

java.lang.NoClassDefFoundError: org/apache/xmlbeans/XmlException

= ; at com.webmethods.sc.metadata.ui.library.searchfolder.actions.AddEditFolder= Dialog$1.getElements(AddEditFolderDialog.java:191)

= ; at org.eclipse.jface.viewers.StructuredViewer.getRawChildren(StructuredView= er.java:927)

= ; at org.eclipse.jface.viewers.StructuredViewer.getFilteredChildren(Structure= dViewer.java:868)

= ; at org.eclipse.jface.viewers.StructuredViewer.getSortedChildren(StructuredV= iewer.java:984)

= ; at = org.eclipse.jface.viewers.AbstractListViewer.inputChanged(AbstractListVi= ewer.java:303)

= ; at = org.eclipse.jface.viewers.ContentViewer.setInput(ContentViewer.java:250)=

= ; at org.eclipse.jface.viewers.StructuredViewer.setInput(StructuredViewer.jav= a:1542)

= ; at = com.webmethods.sc.metadata.ui.library.searchfolder.actions.AddEditFolder= Dialog.createAssetTypeControl(AddEditFolderDialog.java:206)

= ; at com.webmethods.sc.metadata.ui.library.searchfolder.actions.AddEditFolder= Dialog.createDialogArea(AddEditFolderDialog.java:155)<= /font>

= ; at org.eclipse.jface.dialogs.TitleAreaDialog.createContents(TitleAreaDialog= .java:165)

= ; at = org.eclipse.jface.window.Window.create(Window.java:426)

= ; at = org.eclipse.jface.dialogs.Dialog.create(Dialog.java:1124)

= ; at = org.eclipse.jface.window.Window.open(Window.java:785)<= /font>

= ; at com.webmethods.sc.metadata.ui.library.searchfolder.actions.AddEditFolder= Dialog.run(AddEditFolderDialog.java:148)

= ; at = com.webmethods.sc.metadata.ui.library.searchfolder.actions.AddFolderActi= on.run(AddFolderAction.java:55)

= ; at = org.eclipse.jface.action.Action.runWithEvent(Action.java:499)=

= ; at org.eclipse.jface.action.ActionContributionItem.handleWidgetSelection(Ac= tionContributionItem.java:539)

= ; at org.eclipse.jface.action.ActionContributionItem.access$2(ActionContribut= ionItem.java:488)

= ; at org.eclipse.jface.action.ActionContributionItem$6.handleEvent(ActionCont= ributionItem.java:441)

= ; at = org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:66)

= ; at = org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:928)

= ; at = org.eclipse.swt.widgets.Display.runDeferredEvents(Display.java:3348)

= ; at = org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:2968)<= /o:p>

= ; at = org.eclipse.ui.internal.Workbench.runEventLoop(Workbench.java:1914)=

= ; at = org.eclipse.ui.internal.Workbench.runUI(Workbench.java:1878)<= /span>

= ; at = org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:4= 19)

= ; at = org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:149)

= ; at = org.eclipse.ui.internal.ide.IDEApplication.run(IDEApplication.java:95)

= ; at = org.eclipse.core.internal.runtime.PlatformActivator$1.run(PlatformActiva= tor.java:78)

= ; at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.runApplicat= ion(EclipseAppLauncher.java:92)

= ; at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.start(Eclip= seAppLauncher.java:68)

= ; at = org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:= 400)

= ; at = org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:= 177)

= ; 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:336)=

= ; at = org.eclipse.core.launcher.Main.basicRun(Main.java:280)=

= ; at = org.eclipse.core.launcher.Main.run(Main.java:977)

= ; at = org.eclipse.core.launcher.Main.main(Main.java:952)

From: = Dhammika [mailto:dhammika@codegen.net]
Sent: Friday, December = 22, 2006 10:56 PM
To: = user@xmlbeans.apache.org
Subject: RE: Eclipse = plugin Exception: java.lang.NoClassDefFoundError: = org/apache/xmlbeans/XmlException

Can you please give the complete stack = trace

Dhammika

---------------------------------------------------= -------------

Hello,

I’m using XMLBeans as part of an Eclipse = plugin project. I have already created a schema and generated the XML types = using scomp separately and am using that JAR in my plugin to write the = code.

There is no compilation error in the plugin and it = builds fine, but when I launch the runtime workbench to test the plugin, I get = the NoClassDefFoundError. I have tried the = following:

Adding the xbean.jar = and jsr173_1.0_api.jar to the build path
adding the extension = org.eclipse.ant.core.extraClasspathEntries
setting = the java CLASSPATH variable with xbean.jar

But nothing seems to be working… Anyone know = why this problem would occur? Am I missing any required JAR at runtime that is = somehow present during development (compilation)? Anyone with Eclipse plugin = development experience encounter this?

Thanks a lot!

Murali

Murali Gunasekaran

Software Engineer

webMethods Inc.

703.460.6065