Eclipse Community Forums: M2T (model-to-text transformation) » [Acceleo] How to run Acceleo from java file

Home » Modeling » M2T (model-to-text transformation) » [Acceleo] How to run Acceleo from java file

[Acceleo] How to run Acceleo from java file [message #769914]

Thu, 22 December 2011 17:22

Eclipse User

Hi,
Is there any way to run Acceleo from java file? I mean that, instead of using .mtl file, for ex, generated.mtl, I want to use Generated.java. The main function in this java file required 2 args: model and folder. When using generated.mtl, I used "/org.eclipse.acceleo.module.firstGp/model/model.uml" as input param for "Model" field and it worked for me. But when I tried main() in Generated.java with these 2 params:
model: model.uml
foldel: model
It seemed not to work, and here is the output:

Exception in thread "main" java.lang.RuntimeException: Cannot create a resource for 'model.uml'; a registered resource factory is needed
	at org.eclipse.emf.ecore.resource.impl.ResourceSetImpl.getResource(ResourceSetImpl.java:394)
	at org.eclipse.acceleo.common.utils.ModelUtils.load(ModelUtils.java:358)
	at org.eclipse.acceleo.engine.service.AbstractAcceleoGenerator.initialize(AbstractAcceleoGenerator.java:451)
	at org.eclipse.acceleo.module.firstGp.common.Generate.<init>(Generate.java:90)
	at org.eclipse.acceleo.module.firstGp.common.Generate.main(Generate.java:137)

So, can anyone tells me how must I do to run Acceleo from java file ?
I'm using Eclipse Modelling (Indigo) and Acceleo 3.2

[Updated on: Sat, 24 December 2011 08:27] by Moderator

Re: [Acceleo] How to run Acceleo from java file [message #774107 is a reply to message #769914]

Tue, 03 January 2012 04:22

Eclipse User

Hi,

In order to load a ".uml" model, you need to "tell" EMF the necessary resource factory. If you look at the Java launcher generated by Acceleo, you need to add a resource factory in the method "registerResourceFactories" (this method contains an example for UML in a comment so in your case, you just need to remove the "//" before the example). You also need to change the "@generated" tag of this method to "@generated NOT" so that your changes do not get overwritten by a refresh of this Java launcher by Acceleo. You may need to register the UML metamodel next, if that's the case, you should have a look at the method "registerPackages" where another UML specific example is available.

Regards,

Stephane Begaudeau, Obeo

--
Twitter: @sbegaudeau & @acceleo
Google+: stephane.begaudeau & acceleo
Blog: http://stephanebegaudeau.tumblr.com
Acceleo Documentation: http://docs.obeonetwork.com/acceleo

Re: [Acceleo] How to run Acceleo from java file [message #870459 is a reply to message #774107]

Tue, 08 May 2012 06:42

Eclipse User

Hello,

The example code in the generated java class is working for UML.
But I have created my own metamodel (not UML)

/MetaModelGenerator/src/MetaModelGenerator/model/TosDataEntities.ecore

The java launcher is started with the 2 arguments:
- "D:/Workspaces/Eclipse/TOS/Tooling/MetaModelGenerator/model/TruckProto.xmi"
- "D:/Workspaces/Eclipse/TOS/Tooling/MetaModelGenerator"

Without any adaptations, I get a java.lang.RuntimeException:

Cannot create a resource for 'file:/D:/Workspaces/Eclipse/TOS/Tooling/MetaModelGenerator/model/TruckProto.xmi'; a registered resource factory is needed
at ...impl.ResourceSetImpl.getResource(ResourceSetImpl.java:394)
at ....utils.ModelUtils.load(ModelUtils.java:348)
at ... .AbstractAcceleoGenerator.initialize(

I tried the adaptations in registerPackages(), but what do we need to specify as second parameter?
"UMLPackage" is not found as a class, and it is probably not what we need to specify...

resourceSet.getPackageRegistry().put("/MetaModelGenerator/src/MetaModelGenerator/model/TosDataEntities.ecore", UMLPackage.eINSTANCE);

Thanks,

Luc

Re: [Acceleo] How to run Acceleo from java file [message #870460 is a reply to message #774107]

Tue, 08 May 2012 06:42

Eclipse User

Re: [Acceleo] How to run Acceleo from java file [message #870461 is a reply to message #774107]

Tue, 08 May 2012 06:43

Eclipse User

Re: [Acceleo] How to run Acceleo from java file [message #870633 is a reply to message #870461]

Wed, 09 May 2012 03:20

Eclipse User

Hi Luc,

The example we provide as comment in the "registerResourceFactories" method is only aimed at "uml" files. In your case, the model you're trying to load is an XMI file. You thus need to register a factory against that extension. If you do not have your own resource (which I assume since it is the default), adding a line such as this in the method should do the trick :

resourceSet.getResourceFactoryRegistry().getExtensionToFactoryMap().put("xmi", new XMIResourceFactoryImpl());

Laurent Goubet
Obeo

Re: [Acceleo] How to run Acceleo from java file [message #870639 is a reply to message #870633]

Wed, 09 May 2012 03:35

Eclipse User

Hello,

This seems to do part of the trick. Now the standalone generation works, but in the postgenerate, I get an exception

Exception in thread "main" java.lang.NoClassDefFoundError: org/eclipse/core/resources/IWorkspaceRoot
at org.eclipse.acceleo.engine.service.AbstractAcceleoGenerator.postGenerate(AbstractAcceleoGenerator.java:567)
at org.eclipse.acceleo.engine.service.AbstractAcceleoGenerator.generate(AbstractAcceleoGenerator.java:195)
at org.eclipse.acceleo.engine.service.AbstractAcceleoGenerator.doGenerate(AbstractAcceleoGenerator.java:158)
at MetaModelGenerator.main.GenerateDDL_Standalone.doGenerate(GenerateDDL_Standalone.java:192)
at MetaModelGenerator.main.GenerateDDL_Standalone.main(GenerateDDL_Standalone.java:155)

Any idea?

Regards,
Luc

Re: [Acceleo] How to run Acceleo from java file [message #870640 is a reply to message #870633]

Wed, 09 May 2012 03:40

Eclipse User

Silly me,
I fixed the project setup and now it works.

Thanks for the help

Luc

Previous Topic:	[Acceleo] Test for an undefined enumeration in OCL
Next Topic:	Trying to load UTP 1.1 (xmi from OMG)

Goto Forum:

-=] Back to Top [=-

Current Time: Tue Jul 08 16:56:16 EDT 2025

.:: Contact :: Home ::.

Breadcrumbs

Sign up to our Newsletter