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New Xtext project from ECore - Packaging error [message #1835536]

Sun, 06 December 2020 06:03

Eclipse User

Hi everyone,

I am trying to generate a Xtext from an Ecore metamodel.
The metamodel seems alright; containments checked, nsURI and prefixes set.

Now, when I start a "New Xtext project from an existing Ecore model", I get errors on a bunch of classes. The classes in question are all leafs of a same branch.

Here's what happen:
[There was here a clear descrption of the problem. I remove it for PI]

Is it something about parameterization I am missing ? Or what ? I am at a loss, thank to anybody who can give me a hint on how to get these errors out.

Thanks,
Ed

[Updated on: Mon, 07 December 2020 03:01] by Moderator

Re: New Xtext project from ECore - Packaging error [message #1835537 is a reply to message #1835536]

Sun, 06 December 2020 06:05

Eclipse User

make sure you emf project has Xtext nature (rightclick, configure, Convert to Xtext project)
and that it is added to the yourdsl project as dependency.

if that one does not help: please create and share a minimal reproducible example

[Updated on: Sun, 06 December 2020 06:06] by Moderator

Re: New Xtext project from ECore - Packaging error [message #1835538 is a reply to message #1835537]

Sun, 06 December 2020 06:10

Eclipse User

Ouch, your answer came before I had time to resize the image !!!
Thanks so much.

Questions below:

Quote:

make sure you emf project has Xtext nature (rightclick, configure, Convert to Xtext project)

It is.

Quote:

and that it is added to the yourdsl project as dependency.

How do I check that ?

Quote:

please create and share a minimal reproducible example

I can past Xtext example and show it works ;)
More seriously, I'll work on that but it aint easy to do... A small version of that same Ecore worked perfectly. When I had thos inheritance leaves, the thing explodes.

Re: New Xtext project from ECore - Packaging error [message #1835539 is a reply to message #1835538]

Sun, 06 December 2020 06:13

Eclipse User

yes. but to be able to understand and debug it, i need something that i can debug locally

Re: New Xtext project from ECore - Packaging error [message #1835567 is a reply to message #1835539]

Mon, 07 December 2020 03:02

Eclipse User

Too quick maybe, too quick..

Re: New Xtext project from ECore - Packaging error [Solved] [message #1835652 is a reply to message #1835567]

Wed, 09 December 2020 08:52

Eclipse User

The solution to this issue was to use "platform" imports:
i

import "platform:/path/to/yourdsl.ecore"
import "platform:/path/to/yourdsl.ecore#//package1" as package1
import "platform:/path/to/yourdsl.ecore#//package2" as package2

instead of URIs:

import "http://yourdsl.ecore"  
import "http://yourdsl.ecore#//package1" as package1
import "http://yourdsl.ecore#//package2" as package2

There are some warnings, but once the plugin is on, it's all fine.

Asking for a repro is often a lazy answer.

Re: New Xtext project from ECore - Packaging error [Solved] [message #1835658 is a reply to message #1835652]

Wed, 09 December 2020 10:16

Eclipse User

your namespaces look wired.
maybe that is the problem
maybe its also a problem with nested packages

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