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Home » Modeling » M2T (model-to-text transformation) » [Acceleo] Unable to run transformation
[Acceleo] Unable to run transformation [message #702380] Tue, 26 July 2011 09:39 Go to next message
Joachim Denil is currently offline Joachim DenilFriend
Messages: 1
Registered: July 2011
Junior Member
Hello all,

I'm using acceleo to generate a text file out of an e-core model but I cannot get it to work. I'm using

acceleo: 3.1.0.v20110607-0602
eclipse: Indigo: 20110615-0604

Here is a small extract of my template:

[comment encoding = UTF-8 /]

[module generate('')/]

[template public generate(aModel : Model)]
	[comment @main /] 
	[file ('filename.txt', false, 'UTF-8')]



In the file the smallAR package is registered and resource factory:

public void registerPackages(ResourceSet resourceSet) {
        resourceSet.getPackageRegistry().put(SmallARPackage.eNS_URI, SmallARPackage.eINSTANCE);
public void registerResourceFactories(ResourceSet resourceSet) {
        resourceSet.getResourceFactoryRegistry().getExtensionToFactoryMap().put("smallar", new XMIResourceFactoryImpl());

Though when I launch the application as a java application or as a plugin:


An internal error occurred during: "Launching Generate".
The type of the first parameter of the main template named 'generate' is a proxy.

I aslo changed the acceleo compiler preferences to binary then no error was seen and nothing was produced...

What is going wrong?

Thank you,
Joachim Denil
Re: [Acceleo] Unable to run transformation [message #707089 is a reply to message #702380] Mon, 01 August 2011 08:15 Go to previous message
Laurent Goubet is currently offline Laurent GoubetFriend
Messages: 1902
Registered: July 2009
Senior Member
Hi Joachim,

It would seem like the Acceleo engine didn't manage to properly load the template, and I'd say it is indeed due to the SmallAR metamodel.

Are you sure that SmallARPackage.eNS_URI is equal to ""? If not, you will have to either :
- use the value of SmallARPackage.eNS_URI as the URI of the module's metamodel ([module generate('<here>')/]), or
- register the package with the URI "" (resourceSet.getPackageRegistry().put(<here>, SmallARPackage.eINSTANCE);).

Laurent Goubet
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