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[Acceleo] NullPointerException when running standalone [message #1755338]

Thu, 02 March 2017 13:06

Benno Kallweit

Messages: 8
Registered: November 2016

Junior Member

Hi,

i have a Project to generate Java files with Acceleo. When i start the generation in eclipse everything works just fine.

If i start the generation without eclipse, so just the exported jar file, i get the following exception:
Quote:

java.lang.NullPointerException
at org.eclipse.acceleo.common.internal.utils.workspace.AcceleoWorkspaceUtil.getResourceURL(AcceleoWorkspaceUtil.java:278)
at org.eclipse.acceleo.engine.service.AbstractAcceleoGenerator.findModuleURL(AbstractAcceleoGenerator.java:746)
at org.eclipse.acceleo.engine.service.AbstractAcceleoGenerator.initialize(AbstractAcceleoGenerator.java:408)
at cpsModeler.logic.interceptor.codeGenerator.main.Generate.<init>(Generate.java:118)

here is the code i use to start the generation:

File projectRoot = new File(getMySourcePath().concat(acceleoFilesPath));
AcceleoProject acceleoProject = new AcceleoProject(projectRoot);
new AcceleoParser(acceleoProject, false, false, false).buildAll(null);

Generate codeGenerator = new Generate(model, new File(getMySourcePath() + outputPath),Collections.emptyList());
codeGenerator.registerPackages(generationResource.getResourceSet());
codeGenerator.registerResourceFactories(generationResource.getResourceSet());
	    
codeGenerator.doGenerate(new BasicMonitor());

Here Generate is the automatically generated java file from Acceleo.

What am i doing wrong? Any Ideas?

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Re: [Acceleo] NullPointerException when running standalone [message #1756300 is a reply to message #1755338]

Wed, 15 March 2017 08:47

Benno Kallweit

Messages: 8
Registered: November 2016

Junior Member

Update:

AcceleoCommonPlugin.getDefault() returns null, maybe this can help to identify the cause

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Re: [Acceleo] NullPointerException when running standalone [message #1756304 is a reply to message #1756300]

Wed, 15 March 2017 09:01

Ed Willink

Messages: 7655
Registered: July 2009

Senior Member

Hi

This suggests that the plugin has not been started.

When running standalone, it is usually necessary to avoid facilities that require plugins to be started. However some plugins have specific procedures to support standalone initialization. I have no idea what Acceleo provides, so I would debug what happens in a working example.

Regards

Ed Willink

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Re: [Acceleo] NullPointerException when running standalone [message #1757824 is a reply to message #1756304]

Mon, 20 March 2017 11:12

Benno Kallweit

Messages: 8
Registered: November 2016

Junior Member

Thanks for your reply.

I also suggest, that this Plugin is not running but could not yet figure out why. Maybe i missed something i should have executed but did still not find any information about it. Working examples can only be run in eclipse (what is my current problem) where the acceleo plugin seems to start this specific plugin.

Best regards

Benno

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