Eclipse Community Forums: M2T (model-to-text transformation)

Home » Modeling » M2T (model-to-text transformation) » Nothing is being generated(My first attempt is not going well.)

Nothing is being generated [message #1766802]

Tue, 27 June 2017 08:13

Eclipse User

I have the latest, eclipse (neon) with papyrus/accelo installed.

In the launcher configuration dialog, I am seeing this at the top:

Due to changes in the Eclipse platform in Luna, the Acceleo Plug-in Application strategy may not work.

I am trying to generate anything at this point. I get directories created but no file. No errors either. No output of any kind.

Do I need to use an older version? If so what?

Thanks in advance

Re: Nothing is being generated [message #1766818 is a reply to message #1766802]

Tue, 27 June 2017 10:42

Eclipse User

Hi Geoffry,

This warning is there to tell you that the "plug-in application" choice of the launch configuration is not functional anymore. However, you can still generate code with either the "Java application" choice (see image below) or through the use of a acceleo UI launcher plug-in.

The documentation is not really up-to-date, but you can find information on how to create a UI launcher for Acceleo in the Getting Started guide.

Laurent Goubet
Obeo

Re: Nothing is being generated [message #1766819 is a reply to message #1766818]

Tue, 27 June 2017 10:51

Eclipse User

Thanks for responding

Running as a java application is what I tried first as per the example you show.

I get an error when I do this, which is why I switched to the plugin.

Error:

java.lang.IllegalStateException: Workspace is closed.
Usage arguments:
  [-projects <project-root-directory>]
	at org.eclipse.core.resources.ResourcesPlugin.getWorkspace(ResourcesPlugin.java:412)
	at org.eclipse.emf.codegen.ecore.Generator$PlatformRunnable.run(Generator.java:145)
	at org.eclipse.emf.codegen.ecore.Generator.run(Generator.java:112)
	at org.eclipse.emf.codegen.ecore.Generator.main(Generator.java:83)
  [-dynamicTemplates] [-forceOverwrite | -diff]
  [-generateSchema] [-nonNLSMarkers]
  [-codeFormatting { default | <profile-file> } ]
  [-model] [-edit] [-editor] [-tests]
  [-autoBuild <true|false>]
  [-reconcile]
  <genmodel-file-or-platform-resource-uri>
  [ <target-root-directory> ]

For example:

  generate result/model/Extended.genmodel
java.lang.IllegalStateException: Workspace is closed.
	at org.eclipse.core.resources.ResourcesPlugin.getWorkspace(ResourcesPlugin.java:412)
	at org.eclipse.emf.codegen.ecore.Generator$PlatformRunnable.run(Generator.java:145)
	at org.eclipse.emf.codegen.ecore.Generator.run(Generator.java:112)
	at org.eclipse.emf.codegen.ecore.Generator.main(Generator.java:83)

Re: Nothing is being generated [message #1766973 is a reply to message #1766819]

Thu, 29 June 2017 04:15

Eclipse User

Hi,

This doesn't look like an Acceleo generation... are you trying to generate the genmodel code from within an Acceleo launcher/template?

Laurent Goubet
Obeo

Re: Nothing is being generated [message #1766978 is a reply to message #1766973]

Thu, 29 June 2017 04:35

Eclipse User

Hi

Ok, Laurent is baffled too so it doesn't seem like an Acceleo functionality that I'm unfamiliar with.

"at org.eclipse.emf.codegen.ecore.Generator.main(Generator.java:83)"

strongly suggests that the EMF Generator has been launched as a Java application. I didn't know this facility existed. There is an ANT task for dedicated enthusiast. I use an MWE2 component.

How/why are you launching org.eclipse.emf.codegen.ecore.Generator.main?

I suspect a mad launch config. But without a zipped project repro including the launch (save it via the Common tab) I doubt that we can help you further.

Regards

Ed Willink

Re: Nothing is being generated [message #1766996 is a reply to message #1766978]

Thu, 29 June 2017 08:03

Eclipse User

Thanks Ed and Laurent I am getting oriented to this business.

Yes, the launcher was pointed to the EMF generator. I notice in the example that I should be launching ~.Uml2java, but that option is not appearing in the launcher dialog pick list for Main class:/Search
I did install Uml2java from the marketplace. I can find the class in question in my .p2 repository. I tried manually entering it into the dialog, but got a CNF exception. I'll bet I'm missing something.

Any ideas?

Thanks again

Re: Nothing is being generated [message #1766997 is a reply to message #1766996]

Thu, 29 June 2017 08:11

Eclipse User

Hi

Can you Focus on it with Navigate->Open Type in Hierarchy.... You probably need to put UML2Java on the classpath of some (any will do) project.

Regards

Ed Willink

Re: Nothing is being generated [message #1767012 is a reply to message #1766997]

Thu, 29 June 2017 09:58

Eclipse User

Hi,

Okay so if I understand correctly you've pointed the "main" class of the Acceleo launch config towards the EMF "Generator" class. Truth be told I didn't even know that was possible.

The "main class" field of your launch configuration needs to be pointed towards an Acceleo generator's main class. This is the java class that's generated beside the ".mtl" file containing a template with the "@main" annotation.

Please look at the "Getting Started" guide on the wiki. though some of the screenshot there need to be reworked, the information should still answer some of your issues and help you get a first generator running.

Laurent Goubet
Obeo

Re: Nothing is being generated [message #1767016 is a reply to message #1767012]

Thu, 29 June 2017 10:24

Eclipse User

I appreciate the responsiveness. I have a major use case if I can just get things going.

I finally got something to generate. I was lacking a Generate.java file to go with my generate.mtl. I recreated the project and let the wizard make me one. Now I can focus on learning the templates. Ultimately, I'll have to do this with maven.

Thanks again.

Re: Nothing is being generated [message #1767037 is a reply to message #1767012]

Thu, 29 June 2017 15:33

Eclipse User

Hi Laurent,
I have updated the tutorial to acceleo v 3.3 and later and put it here:
https://wiki.eclipse.org/Acceleo/Getting_Started_33

Later I've added some information but haven't put them into the eclipse wiki yet. It is on my own wiki pages:
http://kompilatory.iiar.pwr.edu.pl/wiki/index.php/Acceleo/Getting_Started_33

Could you, please review it and say whether it can be linked to the main acceleo wiki or not?

Tomasz Babczyński

Re: Nothing is being generated [message #1767091 is a reply to message #1767037]

Fri, 30 June 2017 10:52

Eclipse User

Your page seems fine to me Tomasz, but we do not intend on linking people to external pages for the acceleo documentation, especially on something like the getting started that is supposed to be a started guide.

Going through the documentation ti try and update the old stuff is in my backlog, so I expect the "regular" getting started (https://wiki.eclipse.org/Acceleo/Getting_Started) to be updated with new screenshots sooner or later. Could you update that page?

Laurent Goubet
Obeo

Re: Nothing is being generated [message #1767162 is a reply to message #1767091]

Sun, 02 July 2017 16:11

Eclipse User

I am not too familiar with wiki so I was afraid to damage the original page. OK. I could try to do it. (not damage of course ;)

T.B.

Re: Nothing is being generated [message #1767170 is a reply to message #1767162]

Mon, 03 July 2017 03:09

Eclipse User

No problem Tomasz, the wikis have an history so you won't be able to damage it beyond repair even if you mess up :). Update the existing pages at ease.

Laurent Goubet
Obeo

Previous Topic:	Stereotypes
Next Topic:	Artifact fileName

Goto Forum:

-=] Back to Top [=-

Current Time: Sat May 17 12:48:11 EDT 2025

.:: Contact :: Home ::.

Breadcrumbs

Sign up to our Newsletter