Document Jakarta EE 11: Support Jakarta Expression Language 6.0

[volosied]

OpenLiberty/open-liberty#25257

Differences between Expression Language 6.0 and Expression Language 5.0

The main updates are the ELResolvers.

New Additions:

• Record Support: java.lang.Record, introduced in Java 17, is now supported by default via jakarta.el.RecordELResolver.
• Optional Support: java.lang.Optional, introduced in Java 8, is now supported via jakarta.el.OptionalELResolver. Note that it is not enabled by default.
• Array Length Property: Arrays now support the length property via the official API. However, Open Liberty uses Tomcat's Expression Language API and implementation, and the length property has been supported for years.

Removals:

• Feature Descriptors: The getFeatureDescriptors has been removed from jakarta.el.ELResolver class.
• Security Manager: All SecurityManager references within the API have been removed to align with the newer JDKs.

[ramkumar-k-9286]

Hi @volosied

The suggested information has been added to the differences page.

Draft link: https://docs-draft-openlibertyio.mqj6zf7jocq.us-south.codeengine.appdomain.cloud/docs/latest/reference/diff/jakarta-ee11-diff.html#express

Please review the same and let me know if you are ok with the content or if we need to add more information in the section.

If that is the case, please explain what changes need to be made ( in this issue), so that those changes can be made.

Regards,
Ramkumar.

[pnicolucci]

@ramkumar-k-9286 the only comment I have for this is API.However, is missing a space after the .

[pnicolucci]

@volosied any additional comments?

[volosied]

No other comments, looks good.

[ramkumar-k-9286]

Hi @volosied

I had to do some re-work in the differences page. content-wise as well.

Could you have a look at the draft again.

Draft link: https://docs-draft-openlibertyio.mqj6zf7jocq.us-south.codeengine.appdomain.cloud/docs/latest/reference/diff/jakarta-ee11-diff.html#express

Please review the same and let me know if you are ok with the content or if we need to add more information in the section.

If that is the case, please explain what changes need to be made ( in this issue), so that those changes can be made.

Please add Developer Reviewed label if you are satisfied with the changes.

Regards,
Ramkumar.