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[Solved] Post processing in standalone maven project [message #1233722]

Mon, 20 January 2014 10:33

Xi Lin

Messages: 21
Registered: January 2014

Junior Member

I'm trying to build a maven based DSL project with Xtext using the guide www.eclipse.org/Xtext/documentation.html#continuousIntegration.

And in order to add some functions and attributions in generated EMF objects, i use the post processing methods described in christiandietrich.wordpress.com/2011/07/22/customizing-xtext-metamodel-inference-using-xtend2.

Everything is OK in eclipse. But when i switch to maven running "mvn clean install" i get error messages as follow:

[org.eclipse.emf.mwe2.launch.runtime.Mwe2Launcher.main()] ERROR mf.mwe2.launch.runtime.Mwe2Launcher  - [XtextLinkingDiagnostic: null:53 Couldn't resolve reference to JvmType 'ExtendedGenerator'.,

Where ExtendedGenerator is a java class extending original Xtext Generator and replacing component definition in the mwe2 file, and placed in the same directory with mwe2 file.

Do we need to add it to classpath? And since the Mwe2Launcher is invoked by exec-maven-plugin in generate-sources phase before the compile phase, will our ExtendedGenerator.java be saw in that phase?

Thanks.

[Updated on: Wed, 22 January 2014 03:52]

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Re: Post processing in standalone maven project [message #1233842 is a reply to message #1233722]

Mon, 20 January 2014 16:16

Christian Dietrich

Messages: 14665
Registered: July 2009

Senior Member

Hi you have to move the code to a separate maven module

--
Need training, onsite consulting or any other kind of help for Xtext?
Go visit http://xtext.itemis.com or send a mail to xtext at itemis dot de

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

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Re: Post processing in standalone maven project [message #1234058 is a reply to message #1233842]

Tue, 21 January 2014 06:16

Xi Lin

Messages: 21
Registered: January 2014

Junior Member

Thank you very much!

After some tests I finally succeed. The key factor is creating a tycho based maven project to add the extended generator, and declaring the dependency not only in MANIFEST.MF but also in exec-maven-plugin which invoke the Mwe2Launcher.

And I created a repo to show how to do it if someone is interested in it:
github.com/xilin/maven-xtext-example

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