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NoClassDefFoundError DefaultBpmn2RuntimeExtension$RootElementParser - after update to 1.2.3 [message #1722901]

Wed, 10 February 2016 08:44

Ralph Soika

Messages: 150
Registered: July 2009

Senior Member

Hi,

when I update the bpmn2 plugin from release 1.2.2 to latest release 1.2.3 (http://download.eclipse.org/bpmn2-modeler/updates/mars/1.2.3), I got the following exception when opening a model created with the bpmn plugin version 1.2.2 before.

!ENTRY org.eclipse.e4.ui.workbench 4 0 2016-02-10 09:33:42.369
!MESSAGE Unable to create class 'org.eclipse.ui.internal.e4.compatibility.CompatibilityEditor' from bundle '1222'
!STACK 0
org.eclipse.e4.core.di.InjectionException: java.lang.NoClassDefFoundError: org/eclipse/bpmn2/modeler/ui/DefaultBpmn2RuntimeExtension$RootElementParser
	at org.eclipse.e4.core.internal.di.InjectorImpl.internalMake(InjectorImpl.java:356)
	at org.eclipse.e4.core.internal.di.InjectorImpl.make(InjectorImpl.java:264)
	at org.eclipse.e4.core.contexts.ContextInjectionFactory.make(ContextInjectionFactory.java:162)
	at org.eclipse.e4.ui.internal.workbench.ReflectionContributionFactory.createFromBundle(ReflectionContributionFactory.java:104)
	at org.eclipse.e4.ui.internal.workbench.ReflectionContributionFactory.doCreate(ReflectionContributionFactory.java:73)
	at org.eclipse.e4.ui.internal.workbench.ReflectionContributionFactory.create(ReflectionContributionFactory.java:55)
	at org.eclipse.e4.ui.workbench.renderers.swt.ContributedPartRenderer.createWidget(ContributedPartRenderer.java:129)
.....

Is there any other dependency which users need to update when upgrating to 1.2.3?

Tested with: 1.2.3.CR2-v20160209-2002

thanks for help

===
Ralph

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Re: NoClassDefFoundError DefaultBpmn2RuntimeExtension$RootElementParser - after update to 1.2.3 [message #1722974 is a reply to message #1722901]

Wed, 10 February 2016 15:46

Robert Brodt

Messages: 811
Registered: August 2010
Location: Colorado Springs, CO

Senior Member

Hi Ralph,

I had to refactor DefaultBpmn2RuntimeExtension because this class was incorrectly being used by one of the example plugins (datatypes). This caused the wrong TargetRuntime to be selected during validation; i.e. the Target Runtime for the datatypes example plugin was selected for validation of jBPM processes - this was a bad thing Sad

In order to prevent problems like this in the future, I refactored most of the DefaultBpmn2RuntimeExtension code into the class AbstractBpmn2RuntimeExtension. This new class now also contains the RootElementParser inner class.

The short story is that all you should have to do is recompile your extension plugin and it will pick up the RootElementParser. I have prepared a pull request with this change (https://github.com/imixs/imixs-bpmn/pull/46) Let me know if you have any questions.

Cheers,
Bob

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Re: NoClassDefFoundError DefaultBpmn2RuntimeExtension$RootElementParser - after update to 1.2.3 [message #1723016 is a reply to message #1722974]

Wed, 10 February 2016 22:01

Ralph Soika

Messages: 150
Registered: July 2009

Senior Member

Hi Bob,

yes that fixed the problem - thanks!

I updated the developer wiki page : https://wiki.eclipse.org/BPMN2-Modeler/DeveloperTutorials/ExtendingRuntime#Create_a_new_RuntimeExtension
and I also updated my bpmn2-tutorial project on GitHub: https://github.com/rsoika/bpmn2-tutorial
Do you think that the bpmn2-tutorial on GitHub is helpful? Maybe you will fork it? Currently we only link to this example on the Maven Tutorial Page (https://wiki.eclipse.org/BPMN2-Modeler/DeveloperTutorials/Maven).
I think I created this project only to demonstrate the correct maven setup for a BPMN2-Extension project, which has caused me much headache Wink

===
Ralph

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