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Acceleo and Xtext metamodel [message #1611853]

Wed, 11 February 2015 16:58

duke vah

Messages: 33
Registered: December 2013

Member

Hi,

I have been trying to generate code for my own metamodel created in Xtext by Acceleo. However, I receive the following errors.

Quote:

Exception in thread "main" org.eclipse.emf.ecore.resource.impl.ResourceSetImpl$1DiagnosticWrappedException: org.xml.sax.SAXParseExceptionpublicId: file:/C:/workspaces/URN/org.xtext.tgrl.samples/pkg01/p001.xgrl; systemId: file:/C:/workspaces/URN/org.xtext.tgrl.samples/pkg01/p001.xgrl; lineNumber: 1; columnNumber: 1; Content is not allowed in prolog.
at org.eclipse.emf.ecore.resource.impl.ResourceSetImpl.handleDemandLoadException(ResourceSetImpl.java:319)
at org.eclipse.emf.ecore.resource.impl.ResourceSetImpl.demandLoadHelper(ResourceSetImpl.java:278)
at org.eclipse.emf.ecore.resource.impl.ResourceSetImpl.getResource(ResourceSetImpl.java:406)
at org.eclipse.acceleo.common.utils.ModelUtils.load(ModelUtils.java:391)
at org.eclipse.acceleo.common.utils.ModelUtils.load(ModelUtils.java:356)
at org.eclipse.acceleo.engine.service.AbstractAcceleoGenerator.initialize(AbstractAcceleoGenerator.java:475)
at org.eclipse.acceleo.module.tgrl.main.Generate.<init>(Generate.java:90)
at org.eclipse.acceleo.module.tgrl.main.Generate.main(Generate.java:144)
Caused by: org.xml.sax.SAXParseExceptionpublicId: file:/C:/workspaces/URN/org.xtext.tgrl.samples/pkg01/p001.xgrl; systemId: file:/C:/workspaces/URN/org.xtext.tgrl.samples/pkg01/p001.xgrl; lineNumber: 1; columnNumber: 1; Content is not allowed in prolog.
at com.sun.org.apache.xerces.internal.util.ErrorHandlerWrapper.createSAXParseException(ErrorHandlerWrapper.java:203)
at com.sun.org.apache.xerces.internal.util.ErrorHandlerWrapper.fatalError(ErrorHandlerWrapper.java:177)
at com.sun.org.apache.xerces.internal.impl.XMLErrorReporter.reportError(XMLErrorReporter.java:441)
at com.sun.org.apache.xerces.internal.impl.XMLErrorReporter.reportError(XMLErrorReporter.java:368)
at com.sun.org.apache.xerces.internal.impl.XMLScanner.reportFatalError(XMLScanner.java:1436)
at com.sun.org.apache.xerces.internal.impl.XMLDocumentScannerImpl$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: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

The steps I have followed:
- developed my xText language and installed it on my Eclipse. Now, I can work with my plugin. I can also see AST in the outline section.
- I created a small Acceleo project which creates a file without any consideration. When I run "generate.mtl" file inside of eclipse I receive the above error.
The Acceleo file is like this:

Quote:

[comment encoding = UTF-8 /]
[**
* The documentation of the module generate.
*/]
[module generate('http://www.xtext.org/grl/tgrl/TGRL')]

[**
* The documentation of the template generateElement.
* @param aModel
*/]
[template public generateElement(aModel : Model)]
[comment @main/]
[file ('a.txt', false, 'UTF-8')]
This is an example.
[/file]
[/template]

I am sure that the Acceleo works fine because I applied the same process on UML and it worked.
In a topic, it's said there might be no "bin" folder but I checked I have.

Any help will be appreciated.

Thanks.

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Re: Acceleo and Xtext metamodel [message #1611910 is a reply to message #1611853]

Wed, 11 February 2015 17:48

duke vah

Messages: 33
Registered: December 2013

Member

BTW, the model is not an XMI format. It's a text as we expect from xtext.
For example,Quote:

grl {
actor A{
}
actor B{
}
}

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Re: Acceleo and Xtext metamodel [message #1612235 is a reply to message #1611910]

Wed, 11 February 2015 22:49

Ed Willink

Messages: 7635
Registered: July 2009

Senior Member

Hi

You probable need

XgrlStandaloneSetup.doSetup()

where Acceleo syas to regster your models.

Regards

Ed Willink

On 11/02/2015 17:48, duke vah wrote:
> BTW, the model is not an XMI format. It's a text as we expect from xtext.
> For example,Quote:
>> grl {
>> actor A{
>> }
>> actor B{
>> }
>> }
>

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Re: Acceleo and Xtext metamodel [message #1612279 is a reply to message #1612235]

Wed, 11 February 2015 23:28

duke vah

Messages: 33
Registered: December 2013

Member

Hi,

Could you be more specific.
Is it inside the generate.java?
Inside this file there are two registerPackages and registerResourceFactories files used for standalone use.
I'm running inside the eclipse and there is no another section that I can put doSetup().
I would be grateful if you could say exactly where I must put it.
Thanks.

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Re: Acceleo and Xtext metamodel [message #1612323 is a reply to message #1612279]

Thu, 12 February 2015 00:07

duke vah

Messages: 33
Registered: December 2013

Member

Hi,

I solved the issue. Thank you.
I write here the solution for the future reference.
What is needed is that just call doSetup() in two places
Quote:

public Generate(URI modelURI, File targetFolder,
List<? extends Object> arguments) throws IOException {
TGRLStandaloneSetup.doSetup();
initialize(modelURI, targetFolder, arguments);
}

Quote:

public Generate(EObject model, File targetFolder,
List<? extends Object> arguments) throws IOException {
TGRLStandaloneSetup.doSetup();
initialize(model, targetFolder, arguments);
}

Thanks.

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Re: Acceleo and Xtext metamodel [message #1730705 is a reply to message #1612323]

Wed, 27 April 2016 19:17

nes ab

Messages: 7
Registered: March 2016

Junior Member

Hi
please whate is the type of "TGRLStandaloneSetup"
thank you

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Re: Acceleo and Xtext metamodel [message #1730706 is a reply to message #1730705]

Wed, 27 April 2016 19:51

Christian Dietrich

Messages: 14588
Registered: July 2009

Senior Member

TGRLStandaloneSetup is generated by xtext. its default name is MyDslStandaloneSetup.

Twitter : @chrdietrich
Blog : https://www.dietrich-it.de

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Re: Acceleo and Xtext metamodel [message #1730708 is a reply to message #1730706]

Wed, 27 April 2016 21:04

nes ab

Messages: 7
Registered: March 2016

Junior Member

Thank you so much your idea help me
Thanks

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Re: Acceleo and Xtext metamodel [message #1781956 is a reply to message #1611853]

Thu, 15 February 2018 08:04

Souvik Das

Messages: 1
Registered: February 2018

Junior Member

Could you please tell me how to use xgrl as meta model to generate .mtl file.
@duke vah

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Re: Acceleo and Xtext metamodel [message #1782046 is a reply to message #1612323]

Fri, 16 February 2018 12:38

Novarun Deb

Messages: 3
Registered: February 2018

Junior Member

Hi Duke,
I am encountering the exact same problem with a TGRL project.
I tried to follow your solution but I am getting an error at the doSetup() calls.

Exception in thread "main" java.lang.Error: Unresolved compilation problems:
MyDslStandaloneSetup cannot be resolved
MyDslStandaloneSetup cannot be resolved

at org.eclipse.acceleo.module.GRL2Text.main.Generate.<init>(Generate.java:90)
at org.eclipse.acceleo.module.GRL2Text.main.Generate.main(Generate.java:146)

I have also tried to use the other object TGRLStandaloneSetup.doSetup(). But it is showing the same error.

Can you please tell me which object to use and where to find it in my system directory?

Thanks and Regards,
Novarun.

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Re: Acceleo and Xtext metamodel [message #1782246 is a reply to message #1782046]

Tue, 20 February 2018 20:12

Ed Willink

Messages: 7635
Registered: July 2009

Senior Member

Hi

From the limited information you provide it looks like you have a classpath problem. Ensure that what you need is specified.

Regards

Ed Willink

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