[news.eclipse.modeling.gmf] Re: generate code from .gmfgen

[aachila@xxxxxxxxxxx (Achilleas )]

Hi again,

Does anyone has any idea why I get this exception when I am loading the 
mapping model?

org.eclipse.core.runtime.CoreException: Errors while loading Mapping model
	at 
org.eclipse.gmf.internal.bridge.transform.TransformToGenModelOperation.loadMappingModel(TransformToGenModelOperation.java:164)
	at 
bt.com.ccm.generation.plugin.actions.GenerateDiagram.<init>(GenerateDiagram.java:90)
	at 
bt.com.ccm.generation.plugin.actions.GenerateAction.run(GenerateAction.java:87)
	at 
org.eclipse.ui.internal.PluginAction.runWithEvent(PluginAction.java:251)
	at 
org.eclipse.ui.internal.WWinPluginAction.runWithEvent(WWinPluginAction.java:229)
	at 
org.eclipse.jface.action.ActionContributionItem.handleWidgetSelection(ActionContributionItem.java:583)
	at 
org.eclipse.jface.action.ActionContributionItem.access$2(ActionContributionItem.java:500)
	at 
org.eclipse.jface.action.ActionContributionItem$6.handleEvent(ActionContributionItem.java:452)
	at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:84)
	at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1003)
	at org.eclipse.swt.widgets.Display.runDeferredEvents(Display.java:3823)
	at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3422)
	at org.eclipse.ui.internal.Workbench.runEventLoop(Workbench.java:2382)
	at org.eclipse.ui.internal.Workbench.runUI(Workbench.java:2346)
	at org.eclipse.ui.internal.Workbench.access$4(Workbench.java:2198)
	at org.eclipse.ui.internal.Workbench$5.run(Workbench.java:493)
	at 
org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:288)
	at 
org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:488)
	at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:149)
	at 
org.eclipse.ui.internal.ide.application.IDEApplication.start(IDEApplication.java:113)
	at 
org.eclipse.equinox.internal.app.EclipseAppHandle.run(EclipseAppHandle.java:193)
	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(Unknown Source)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
	at java.lang.reflect.Method.invoke(Unknown Source)
	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: java.lang.NullPointerException
	at 
org.eclipse.gmf.internal.bridge.transform.TransformToGenModelOperation.loadMappingModel(TransformToGenModelOperation.java:149)
	... 32 more

The exception is generated from the following code line in the 
TransformToGenModelOperation class:

String msg = 
MessageFormat.format(Messages.TransformToGenModelOperation_e_wrong_root_element, 
root.getClass().getName());
	
Thanks,

Achilleas