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Re: [mat-dev] Importing MAT Source
Following up here -- I have no strong thoughts/preferences.

I did find this -- https://stackoverflow.com/a/18657966/813561 -- which looks like a rule for Tycho. I'm not sure how m2eclipse works otherwise.

(I tend to use VS Code or IDEA for most of the Java dev, which brings its own challenges!)

On Wed, Jan 29, 2025 at 10:29 AM KEVIN GRIGORENKO via mat-dev <mat-dev@xxxxxxxxxxx> wrote:

There are two ways to import MAT source into Eclipse:

 

1. Import } General } Existing Projects into Workspace

2. Import } Maven } Existing Maven Projects

 

The former works because we check in Eclipse .project, .classpath, and .settings files/directories into the source tree.

 

Using either method with a fresh Eclipse 2024-12 for Eclipse Committers IDE causes hundreds of exceptions of the form:

 

Access restriction: The [...] is not API (restriction on required library '[...]/org.hamcrest_3.0.0.jar')

 

This can be resolved by going into workspace or project preferences and changing "Forbidden reference (access rules)" to "Warning" under Java Compiler } Errors/Warnings

 

From my understanding, it's generally no longer recommended to check in Eclipse .project/.classpath/.settings files/folders into the source tree and instead to import using Existing Maven Projects and let the M2Eclipse plugin handle the Eclipse projects/settings; however, I can't find any way to tell M2Eclipse in pom.xml files to automatically set "Forbidden reference" to "Warning".

 

So it seems to me there are two options:

 

A. Change the "Forbidden reference" setting in the checked-in Eclipse settings and discourage using Import } Existing Maven Projects in the Contributor Reference, or

B. Remove all checked-in Eclipse settings from the source tree, discourage using Import } Existing Projects into Workspace in the Contributor Reference, and add a step in the Contributor Reference to change the "Forbidden reference" setting.

 

Any preferences? I lean towards A out of inertia.

 

-- 

Kevin Grigorenko

Application Runtimes SWAT, IBM Software Support

 

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