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[rest-dev] Update Jakarta REST to Use CDI
  • From: James Perkins <jperkins@xxxxxxx>
  • Date: Mon, 13 Apr 2026 14:22:18 +0000
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  • Thread-topic: Update Jakarta REST to Use CDI
Hello All,
I've submitted a draft PR for updating the Jakarta RESTful Web Services specification to officially deprecate @Context and use CDI, see [1] https://github.com/jakartaee/rest/pull/1340.

This has received some minor reviews, but we could use some bigger ones overall. The Jakarta Platform team would like it if we could have a milestone on May 15th. This is about a month away.  If those involved in the specification could give this a review that would be helpful. 

What this draft PR does lack is some additional TCK testing. This is something I can add, but I need to add the assertion JavaDoc's to the test I added.

One concern I have with the PR is using the @EntityParam annotation for the content parameter. There is no way to differentiate a method which uses CDI from a method that uses the old pattern of any non-annotated parameter is the entity/content. I'm really not sure how we solve that without always requiring the @EntityParam annotation on the entity/content parameter. This would require us change ALL TCK tests which use content to use the new annotation. It would also require a quite heafty migration path for users and libraries.

One option might be to simply not allow CDI injection for methods. This seems like the simplest option and then really the @EntityParam annotation can just be removed.

I'm open to other thoughts and opinions 🙂  

[1]: https://github.com/jakartaee/rest/pull/1340

James R. Perkins
Software Developer 

IBM

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