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Weird maven-dependency-plugin copy problem with emf.common.2.19 [message #1850868]

Sat, 19 March 2022 20:50

Eclipse User

I know this is a Maven problem and not an EMF problem, I'm just writing here in a desperate attempt to get any clues as to what might be happening.

I'm trying to build a standalone Xtext compiler, and I've had a Maven recipe that has worked for years. Suddenly, the recipe has stopped working and the first problem I'm hitting is:

For some unexplained reason, the maven-dependency-plugin copies the org.emf.common.2.19 plugin into the resulting jar - but it doesn't copy ANY of it's classes. Instead of a 367KB emf.common jar in my fatjar, I get a 19KB jar that has a manifest, but it has ZERO classes.

So when I run my compiler, it immediately dies when it tries to access "common EMF stuff".

Since I'm not really doing anything specific to my problem other than asking maven (and Tycho I suppose) to copy my deps, why in the world would it know that I need eclipse.emf.common, but then copy the most shallow representation of it without any classes?

[Updated on: Sat, 19 March 2022 20:51] by Moderator

Re: Weird maven-dependency-plugin copy problem with emf.common.2.19 [message #1850869 is a reply to message #1850868]

Sat, 19 March 2022 21:36

Eclipse User

The same type of problem is happening with org.eclipse.emf.ecore.2.22 as well - I get an exported jar that is essentially blank and doesn't have any classes.

Exporting my Main xtext compiler as a Runnable Jar File from Eclipse works just fine - I just can't do any continuous integration with a command line compiler I have to generate manually.

Re: Weird maven-dependency-plugin copy problem with emf.common.2.19 [message #1850872 is a reply to message #1850869]

Sun, 20 March 2022 03:09

Eclipse User

Do you have any idea what's changed? A newer version of Maven or Tycho? The jar versions look to be a number of releases back so I assume those haven't changed since when it was working.

Re: Weird maven-dependency-plugin copy problem with emf.common.2.19 [message #1850874 is a reply to message #1850872]

Sun, 20 March 2022 09:31

Eclipse User

Ed Merks wrote on Sun, 20 March 2022 03:09