Warning on Java 11

[tommccallum]

First off, great work this is a really useful tool that I will be using at our university to help our students.

I got this warning on Fedora 32, Java 11, VS Code:

WARNING: An illegal reflective access operation has occurred
WARNING: Illegal reflective access by com.google.inject.internal.cglib.core.$ReflectUtils$2 (file:/home/tom/.vscode/extensions/bigmodelingtools.erdiagram-0.0.2/server/erdiagram-language-server/lib/guice-3.0.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int,java.security.ProtectionDomain)
WARNING: Please consider reporting this to the maintainers of com.google.inject.internal.cglib.core.$ReflectUtils$2
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
[Warn - 09:25:33] Model requests are not supported by the Xtext diagram server.

$ java -version
openjdk version "11.0.11" 2021-04-20
OpenJDK Runtime Environment 18.9 (build 11.0.11+9)
OpenJDK 64-Bit Server VM 18.9 (build 11.0.11+9, mixed mode, sharing)

$ code -v
1.61.2
6cba118ac49a1b88332f312a8f67186f7f3c1643
x64

This is why I think when I try and use with the latest openjdk it also fails.

[borkdominik]

Thanks @tommccallum for the positive feedback and the bug report.
We plan a new release for early November and will look into this.

[plglaser]

I recently updated the tool including some changes dealing with this issue. The tool should now be available for later JDK versions and the "[Warn - 09:25:33] Model requests are not supported by the Xtext diagram server." - message should not appear anymore.

Could you try again with the latest version from the marketplace (v0.0.3) and report back any issues?

Using the tool with JDK 17+ could still be a problem and the reflective access warnings might still appear, due to an old guice version. As far as I can tell, this is coming from Xtext and it seems the newest version fixes this. I will try updating to the newest version, in a future release.

[plglaser]

Updated to a newer Xtext version, which will be included in the new release (v0.1.0) and closes this issue.

Feel free to open the issue again if you still encounter any problems after updating to the latest version.