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[XCore] XcoreLang.xcore content is not allowed in Prolog [message #1803637]

Tue, 05 March 2019 22:15

Regent LArcheveque

Messages: 92
Registered: May 2010

Member

Hi,

I browsed the newsgroups and web to find hints about how to solve this issue. This happens when I create and execute a standalone RCP. I already got a similar problem long time ago but I do not remember how I solved it. I am pretty sure there are missing dependencies in the RCP product. Despite this exception, the system works as usual. If someone has an idea, it would be really appreciated.

Thanks

Here is the detail of the exception.

Caused by: org.eclipse.emf.ecore.resource.impl.ResourceSetImpl$1DiagnosticWrappedException: org.xml.sax.SAXParseExceptionpublicId: platform:/plugin/or
g.eclipse.emf.ecore.xcore.lib/model/XcoreLang.xcore; systemId: platform:/plugin/org.eclipse.emf.ecore.xcore.lib/model/XcoreLang.xcore; lineNumber: 1; 
columnNumber: 1; Content is not allowed in prolog.
	at org.eclipse.emf.ecore.resource.impl.ResourceSetImpl.handleDemandLoadException(ResourceSetImpl.java:319)
	at org.eclipse.emf.ecore.resource.impl.ResourceSetImpl.demandLoadHelper(ResourceSetImpl.java:278)
	at org.eclipse.emf.ecore.resource.impl.ResourceSetImpl.getResource(ResourceSetImpl.java:406)
	at org.eclipse.emf.ecore.plugin.RegistryReader$EPackageDescriptor$Dynamic.getEPackage(RegistryReader.java:250)
	... 42 more
Caused by: org.xml.sax.SAXParseExceptionpublicId: platform:/plugin/org.eclipse.emf.ecore.xcore.lib/model/XcoreLang.xcore; systemId: platform:/plugin/o
rg.eclipse.emf.ecore.xcore.lib/model/XcoreLang.xcore; lineNumber: 1; columnNumber: 1; Content is not allowed in prolog.
	at com.sun.org.apache.xerces.internal.util.ErrorHandlerWrapper.createSAXParseException(ErrorHandlerWrapper.java:203)
	at com.sun.org.apache.xerces.internal.util.ErrorHandlerWrapper.fatalError(ErrorHandlerWrapper.java:177)
	at com.sun.org.apache.xerces.internal.impl.XMLErrorReporter.reportError(XMLErrorReporter.java:441)
	at com.sun.org.apache.xerces.internal.impl.XMLErrorReporter.reportError(XMLErrorReporter.java:368)
	at com.sun.org.apache.xerces.internal.impl.XMLScanner.reportFatalError(XMLScanner.java:1436)
	at com.sun.org.apache.xerces.internal.impl.XMLDocumentScannerImpl$PrologDriver.next(XMLDocumentScannerImpl.java:999)
	at com.sun.org.apache.xerces.internal.impl.XMLDocumentScannerImpl.next(XMLDocumentScannerImpl.java:606)
	at com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl.scanDocument(XMLDocumentFragmentScannerImpl.java:510)
	at com.sun.org.apache.xerces.internal.parsers.XML11Configuration.parse(XML11Configuration.java:848)
	at com.sun.org.apache.xerces.internal.parsers.XML11Configuration.parse(XML11Configuration.java:777)
	at com.sun.org.apache.xerces.internal.parsers.XMLParser.parse(XMLParser.java:141)
	at com.sun.org.apache.xerces.internal.parsers.AbstractSAXParser.parse(AbstractSAXParser.java:1213)
	at com.sun.org.apache.xerces.internal.jaxp.SAXParserImpl$JAXPSAXParser.parse(SAXParserImpl.java:649)
	at com.sun.org.apache.xerces.internal.jaxp.SAXParserImpl.parse(SAXParserImpl.java:333)
	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:1563)
	at org.eclipse.emf.ecore.resource.impl.ResourceImpl.load(ResourceImpl.java:1342)
	at org.eclipse.emf.ecore.resource.impl.ResourceSetImpl.demandLoad(ResourceSetImpl.java:259)
	at org.eclipse.emf.ecore.resource.impl.ResourceSetImpl.demandLoadHelper(ResourceSetImpl.java:274)
	... 44 more

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Re: [XCore] XcoreLang.xcore content is not allowed in Prolog [message #1803638 is a reply to message #1803637]

Tue, 05 March 2019 22:17

Christian Dietrich

Messages: 13062
Registered: July 2009

Senior Member

can you please explain what you are exactly doing in your rcp?

Need professional support for Xtext, Xpand, EMF?
Go to: https://www.itemis.com/en/xtext/
Twitter : @chrdietrich
Blog : https://www.dietrich-it.de

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Re: [XCore] XcoreLang.xcore content is not allowed in Prolog [message #1803639 is a reply to message #1803638]

Tue, 05 March 2019 22:18

Christian Dietrich

Messages: 13062
Registered: July 2009

Senior Member

besides that the emf forum is the place to be for xcore questions

Need professional support for Xtext, Xpand, EMF?
Go to: https://www.itemis.com/en/xtext/
Twitter : @chrdietrich
Blog : https://www.dietrich-it.de

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Re: [XCore] XcoreLang.xcore content is not allowed in Prolog [message #1803644 is a reply to message #1803639]

Wed, 06 March 2019 02:44

Ed Merks

Messages: 30351
Registered: July 2009

Senior Member

Normally a *.xcore resource should be loaded using an XcoreResource but that's created by the injector and is registered via the runtime module. I'm not sure your overall context where this happens. I've not seen this problem before. Something must be demand loading the registered package, but something that requires this should be loading using an Xtext resource set....

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