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[Acceleo] Problem starting Acceleo from within Magicdraw Plugin [message #1747398]

Mon, 14 November 2016 10:11

Benno Kallweit

Messages: 8
Registered: November 2016

Junior Member

Hello,

i am using Acceleo to generate Java Code out of a Model created with Magicdraw.
If i save the Model to a file and load this file into a resource in a java program running in eclipse everything works fine.

Here is my code:

ResourceSet resSet = new ResourceSetImpl();
resSet.getResourceFactoryRegistry().getExtensionToFactoryMap().put("*", new  UMLResourceFactoryImpl());
Resource metaResource = resSet.createResource(URI.createFileURI(new File("E:/eclipse32/XMIFiles/Traffic_Lights(1).uml").getAbsolutePath()));
EPackage.Registry.INSTANCE.put(UMLPackage.eNS_URI, UMLPackage.eINSTANCE);
Resource.Factory.Registry.INSTANCE.getExtensionToFactoryMap().put(UMLResource.FILE_EXTENSION, UMLResource.Factory.INSTANCE); 
try {
       metaResource.load(Collections.EMPTY_MAP);
} catch (IOException e) {
	e.printStackTrace();
}
Generate codeGenerator = new Generate(metaResource.getContents().get(0), new File("E:/CPSModeler/workspace/[...]/genSrc"),Collections.emptyList());
codeGenerator.registerPackages(resSet);
codeGenerator.registerResourceFactories(resSet);
codeGenerator.doGenerate(null);

If i call the same program from within a magicdraw plugin (which is started in debug mode in eclipse) i get the following error message:

2016-11-14 11:04:41,966 [AWT-EventQueue-0] ERROR GENERAL - 
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:111)
	at cpsModeler.logic.interceptor.codeGenerator.resourceLoadTest.generate(resourceLoadTest.java:41)
	at cpsModeler.userInterface.gui.InterceptorAction.actionPerformed(InterceptorAction.java:95)
	at javax.swing.AbstractButton.fireActionPerformed(Unknown Source)
	at javax.swing.AbstractButton$Handler.actionPerformed(Unknown Source)
	at javax.swing.DefaultButtonModel.fireActionPerformed(Unknown Source)
	at javax.swing.DefaultButtonModel.setPressed(Unknown Source)
	at javax.swing.AbstractButton.doClick(Unknown Source)
	at com.jidesoft.plaf.vsnet.VsnetMenuItemUI.doClick(Unknown Source)
	at com.jidesoft.plaf.vsnet.VsnetMenuItemUI$MouseInputHandler.mouseReleased(Unknown Source)
	at java.awt.Component.processMouseEvent(Unknown Source)
	at javax.swing.JComponent.processMouseEvent(Unknown Source)
	at java.awt.Component.processEvent(Unknown Source)
	at java.awt.Container.processEvent(Unknown Source)
	at java.awt.Component.dispatchEventImpl(Unknown Source)
	at java.awt.Container.dispatchEventImpl(Unknown Source)
	at java.awt.Component.dispatchEvent(Unknown Source)
	at java.awt.LightweightDispatcher.retargetMouseEvent(Unknown Source)
	at java.awt.LightweightDispatcher.processMouseEvent(Unknown Source)
	at java.awt.LightweightDispatcher.dispatchEvent(Unknown Source)
	at java.awt.Container.dispatchEventImpl(Unknown Source)
	at java.awt.Window.dispatchEventImpl(Unknown Source)
	at java.awt.Component.dispatchEvent(Unknown Source)
	at java.awt.EventQueue.dispatchEventImpl(Unknown Source)
	at java.awt.EventQueue.access$500(Unknown Source)
	at java.awt.EventQueue$3.run(Unknown Source)
	at java.awt.EventQueue$3.run(Unknown Source)
	at java.security.AccessController.doPrivileged(Native Method)
	at java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(Unknown Source)
	at java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(Unknown Source)
	at java.awt.EventQueue$4.run(Unknown Source)
	at java.awt.EventQueue$4.run(Unknown Source)
	at java.security.AccessController.doPrivileged(Native Method)
	at java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(Unknown Source)
	at java.awt.EventQueue.dispatchEvent(Unknown Source)
	at com.nomagic.utils.EventTracker.dispatchEvent(EventTracker.java:33)
	at java.awt.EventDispatchThread.pumpOneEventForFilters(Unknown Source)
	at java.awt.EventDispatchThread.pumpEventsForFilter(Unknown Source)
	at java.awt.EventDispatchThread.pumpEventsForHierarchy(Unknown Source)
	at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
	at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
	at java.awt.EventDispatchThread.run(Unknown Source)

Do you have any suggestions where this error may come from and what to do about it?

Best regards

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Re: [Acceleo] Problem starting Acceleo from within Magicdraw Plugin [message #1748067 is a reply to message #1747398]

Fri, 18 November 2016 10:17

Laurent Goubet

Messages: 1862
Registered: July 2009

Senior Member

Hi,

I have no idea what you mean by "within a magicdraw plugin (which is started in debug mode in eclipse)" but given the stack trace, the most likely reason is that you're trying to run this code from within an rcp application that doesn't have workspace support. I can't really help on this without more information on how you're trying to run this or a means for me to reproduce though.

Laurent Goubet
Obeo

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Re: [Acceleo] Problem starting Acceleo from within Magicdraw Plugin [message #1748084 is a reply to message #1748067]

Fri, 18 November 2016 11:31

Benno Kallweit

Messages: 8
Registered: November 2016

Junior Member

Hi,

thanks for your reply.
First of all, i found a workaround today to avoid this problem, i just send the model via activemq to a standalone application, which works fine.

As the problem might be of interest for the future let me explain better what i do:
I develop a plugin for magicdraw. Therefor i have a project in eclipse to start the magicdraw application (which is a java application running in osgi framework) from within eclipse so i do not need to deploy the plugin but have it as dependency in the magicdraw project so magicdraw loads it from the workspace.

If there should be no solution, as it might be that MagicDraw has no workspace support, than this can be closed as i now use a workaround. I was just wondering what the problem might be.

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