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EMF OCL Example cannot find org.eclipse.emf.ecore.codegen.ecore templates [message #1783858]

Mon, 19 March 2018 11:52

Eclipse User

Hello,

I was following along with https://www.eclipse.org/articles/article.php?file=Article-EMF-Codegen-with-OCL/index.html

and when running it I get the following error:

Errors occurred during the build.
Errors running builder 'JET Builder' on project 'org.eclipse.ocl.examples.codegen'.
The file 'Class.javajet' cannot be read in 'model/Class.javajet' at line 1 column 258
The file 'Class.javajet' cannot be read in 'model/Class.javajet' at line 1 column 258
The file 'Class.javajet' cannot be read in 'model/Class.javajet' at line 1 column 258
The file 'Class.javajet' cannot be read in 'model/Class.javajet' at line 1 column 258

with the offending line being in the example's Class.javajet which is supposed to include the jet file from the org.eclipse.emf.codegen.ecore package:

<%@ jet package="org.eclipse.ocl.examples.codegen.templates.model" imports="java.util.* org.eclipse.emf.codegen.ecore.genmodel.* org.eclipse.emf.ecore.*" class="Class" version="$Id$" %>
<% final String oclNsURI = "http://www.eclipse.org/ocl/examples/OCL"; %>
<%@ include file="Class.javajet"%>

Questions: How does JET know where to find these base templates contained in org.eclipse.emf.codegen.ecore? What is the standard way to provide the include path to JET to find the eclipse base jet templates? Perhaps this is no longer supported. Or do I have to supply an absolute or relative path to their location?

Or am I missing something on this?

Regards,
Bruce

[Updated on: Mon, 19 March 2018 12:08] by Moderator

Re: EMF OCL Example cannot find org.eclipse.emf.ecore.codegen.ecore templates [message #1783860 is a reply to message #1783858]

Mon, 19 March 2018 12:18

Eclipse User

Hi

You will see that the article starts with a "This page is deprecated and may contain some information that is no longer relevant or accurate." which is all that I could achieve to retract it.

JET has always been a bit magic and was a real pain to maintain. The OCL *.javajet died a couple of years before anyone noticed. Very recently a significant fix makes JavaJet file name resolution much more consistent. Unfortunately the fix was not quite right, so Photon M6 is a step backwards, but is remedied by the latest EMF N-build.

All of that is irrelevant since you should follow the OCLinEcore / Complete OCL / Validation tutorials in the OCL documentation, taking care to use either the old Classic Ecore/UML OCL without UI or CG or the new Unified Pivot-based OCL with Xtext UI and Java CG.

Regards

Ed Willink

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