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[Acceleo] PackageNotFoundException [message #1736373] Tue, 28 June 2016 21:00 Go to next message
Eclipse UserFriend
Hello.

I'm working on a DSL metamodel now. After this metamodel, I ran an instance (.editor -> Run As -> Eclipse Application) and created on it a model and a Acceleo Project to code generation.

When I try to run the Acceleo application, I have, however, an error message:

Exception in thread "main" org.eclipse.emf.ecore.resource.impl.ResourceSetImpl$1DiagnosticWrappedException: org.eclipse.emf.ecore.xmi.PackageNotFoundException: Package with uri 'hxxp://www.example.org/classdiagram' not found. (file:/C:/Users/Higo/runtime-EclipseApplication/exemplo/My.classdiagram, 2, 199)
	at org.eclipse.emf.ecore.resource.impl.ResourceSetImpl.handleDemandLoadException(ResourceSetImpl.java:319)
	at org.eclipse.emf.ecore.resource.impl.ResourceSetImpl.demandLoadHelper(ResourceSetImpl.java:278)
	at org.eclipse.emf.ecore.resource.impl.ResourceSetImpl.getResource(ResourceSetImpl.java:406)
	at org.eclipse.acceleo.common.utils.ModelUtils.load(ModelUtils.java:391)
	at org.eclipse.acceleo.common.utils.ModelUtils.load(ModelUtils.java:356)
	at org.eclipse.acceleo.engine.service.AbstractAcceleoGenerator.initialize(AbstractAcceleoGenerator.java:475)
	at org.eclipse.acceleo.module.sample.main.Generate.<init>(Generate.java:90)
	at org.eclipse.acceleo.module.sample.main.Generate.main(Generate.java:144)
Caused by: org.eclipse.emf.ecore.xmi.PackageNotFoundException: Package with uri 'hxxp://www.example.org/classdiagram' not found. (file:/C:/Users/Higo/runtime-EclipseApplication/exemplo/My.classdiagram, 2, 199)
	at org.eclipse.emf.ecore.xmi.impl.XMLHandler.getPackageForURI(XMLHandler.java:2625)
	at org.eclipse.emf.ecore.xmi.impl.XMLHandler.getFactoryForPrefix(XMLHandler.java:2458)
	at org.eclipse.emf.ecore.xmi.impl.XMLHandler.createObjectByType(XMLHandler.java:1335)
	at org.eclipse.emf.ecore.xmi.impl.XMLHandler.createTopObject(XMLHandler.java:1504)
	at org.eclipse.emf.ecore.xmi.impl.XMLHandler.processElement(XMLHandler.java:1026)
	at org.eclipse.emf.ecore.xmi.impl.XMIHandler.processElement(XMIHandler.java:77)
	at org.eclipse.emf.ecore.xmi.impl.XMLHandler.startElement(XMLHandler.java:1008)
	at org.eclipse.emf.ecore.xmi.impl.XMLHandler.startElement(XMLHandler.java:719)
	at org.eclipse.emf.ecore.xmi.impl.XMIHandler.startElement(XMIHandler.java:163)
	at com.sun.org.apache.xerces.internal.parsers.AbstractSAXParser.startElement(Unknown Source)
	at com.sun.org.apache.xerces.internal.impl.dtd.XMLDTDValidator.startElement(Unknown Source)
	at com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl.scanStartElement(Unknown Source)
	at com.sun.org.apache.xerces.internal.impl.XMLDocumentScannerImpl$ContentDriver.scanRootElementHook(Unknown Source)
	at com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl$FragmentContentDriver.next(Unknown Source)
	at com.sun.org.apache.xerces.internal.impl.XMLDocumentScannerImpl$PrologDriver.next(Unknown Source)
	at com.sun.org.apache.xerces.internal.impl.XMLDocumentScannerImpl.next(Unknown Source)
	at com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl.scanDocument(Unknown Source)
	at com.sun.org.apache.xerces.internal.parsers.XML11Configuration.parse(Unknown Source)
	at com.sun.org.apache.xerces.internal.parsers.XML11Configuration.parse(Unknown Source)
	at com.sun.org.apache.xerces.internal.parsers.XMLParser.parse(Unknown Source)
	at com.sun.org.apache.xerces.internal.parsers.AbstractSAXParser.parse(Unknown Source)
	at com.sun.org.apache.xerces.internal.jaxp.SAXParserImpl$JAXPSAXParser.parse(Unknown Source)
	at com.sun.org.apache.xerces.internal.jaxp.SAXParserImpl.parse(Unknown Source)
	at org.eclipse.emf.ecore.xmi.impl.XMLLoadImpl.load(XMLLoadImpl.java:175)
	at org.eclipse.emf.ecore.xmi.impl.XMLResourceImpl.doLoad(XMLResourceImpl.java:261)
	at org.eclipse.emf.ecore.resource.impl.ResourceImpl.load(ResourceImpl.java:1518)
	at org.eclipse.emf.ecore.resource.impl.ResourceImpl.load(ResourceImpl.java:1297)
	at org.eclipse.emf.ecore.resource.impl.ResourceSetImpl.demandLoad(ResourceSetImpl.java:259)
	at org.eclipse.emf.ecore.resource.impl.ResourceSetImpl.demandLoadHelper(ResourceSetImpl.java:274)
	... 6 more


Since I have no experience with Acceleo, I can not precisely identify a cause for this error message. How could I fix it?

Best regards,

Higo.
Re: [Acceleo] PackageNotFoundException [message #1736593 is a reply to message #1736373] Thu, 30 June 2016 10:00 Go to previous messageGo to next message
Eclipse UserFriend
Hi,

Please look at the comments in the generated java launcher beside your main template (org.eclipse.acceleo.module.sample.main.Generate.java) for an example of how to register your metamodels. You'll need a direct dependency from your generator project to the project that hosts your your metamodel as well for it to work properly.

See also the answer on this earlier thread.

Please keep us informed if you still don't manage to get it running.

Laurent Goubet
Obeo
Re: [Acceleo] PackageNotFoundException [message #1736843 is a reply to message #1736593] Sat, 02 July 2016 17:23 Go to previous message
Eclipse UserFriend
Thank you for the answer, and sorry for the late response.

I already managed to work around the issue. The application is running now.

Best regards,

H.
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