[hibernate-dev] Re: Release Announcement: General Availability of Java 15 / JDK 15

Many thanks Rory!

All, there's plenty of great features here which are relevant to
Hibernate; I hope you're having a look. Unfortunately we're still
aiming at backwards compatibility with Java8 for our main projects,
but I hope some of us will want to start experimenting with these.

Some suggestions:

* JEP 371: Hidden Classes <http://openjdk.java.net/jeps/371>
Some of the classes we generate might be a good candidate to be
"hidden"? Although I have to warn I haven't fully understood this JEP,
it will require some exploration.

* JEP 378: Text Blocks <http://openjdk.java.net/jeps/378>
Expressing SQL queries is the canonical example of this JEP; clearly
it's going to be useful for HQL as well. I suppose it will "just
work", but it would be good to verify this, see how it looks, and if
there's improvements we can do to our API / documentation / examples.

* JEP 360: Sealed Classes (Preview) <http://openjdk.java.net/jeps/360>
For those cases in which we have an SPIs which isn't really meant to
be third-party pluggable.

 * JEP 384: Records (Second Preview) <https://openjdk.java.net/jeps/384>
Since they are immutable, they aren't a good fit for entities; but
they seem like a great way to represent a scalar query result, as sets
of parameters for queries, and there's possibly some desire to use
them mappeddd as embeddable types.

Thanks,
Sanne


On Tue, 15 Sep 2020 at 15:37, Rory O'Donnell <[email protected]> wrote:
>
> Hi Sanne & Yoann,
>
> **Release Announcement: General Availability of Java 15 / JDK 15 [1]
> **
>
>   * JDK 15, the reference implementation of Java 15, is now Generally
>     Available.
>   * GPL-licensed OpenJDK builds from Oracle are available here:
>     http://jdk.java.net/15/
>   * JDK 15 Release notes
>     <https://www.oracle.com/java/technologies/javase/15-relnote-issues.html>
>
> JDK 15 includes fourteen features [2]:
>
>   * JEP 339: Edwards-Curve Digital Signature Algorithm (EdDSA)
>     <http://openjdk.java.net/jeps/339>
>   * JEP 360: Sealed Classes (Preview) <http://openjdk.java.net/jeps/360>
>   * JEP 371: Hidden Classes <http://openjdk.java.net/jeps/371>
>   * JEP 372: Remove the Nashorn JavaScript Engine
>     <http://openjdk.java.net/jeps/372>
>   * JEP 373: Reimplement the Legacy DatagramSocket API
>     <https://openjdk.java.net/jeps/373>
>   * JEP 374: Disable and Deprecate Biased Locking
>     <http://openjdk.java.net/jeps/374>
>   * JEP 375: Pattern Matching for instanceof (Second Preview)
>     <https://openjdk.java.net/jeps/375>
>   * JEP 377: ZGC: A Scalable Low-Latency Garbage Collector
>     <http://openjdk.java.net/jeps/377>
>   * JEP 378: Text Blocks <http://openjdk.java.net/jeps/378>
>   * JEP 379: Shenandoah: A Low-Pause-Time Garbage Collector
>     <https://openjdk.java.net/jeps/379>
>   * JEP 381: Remove the Solaris and SPARC Ports
>     <https://openjdk.java.net/jeps/381>
>   * JEP 383: Foreign-Memory Access API (Second Incubator)
>     <https://openjdk.java.net/jeps/383>
>   * JEP 384: Records (Second Preview) <https://openjdk.java.net/jeps/384>
>   * JEP 385: Deprecate RMI Activation for Removal
>     <https://openjdk.java.net/jeps/385>
>
> Thanks to everyone who contributed to JDK 15, whether by creating
> features or enhancements, logging  bugs, or downloading and testing the
> early-access builds.
>
> OpenJDK 16 Early Access build 15**is now available at http://jdk.java.net/16
>
>   * JEPs integrated to JDK 16:
>       o JEP 347: Enable C++14 Language Features
>         <https://openjdk.java.net/jeps/347>
>       o JEP 357: Migrate from Mercurial to Git
>         <https://openjdk.java.net/jeps/357>
>       o JEP 369: Migrate to GitHub <https://openjdk.java.net/jeps/369>
>
>   * Release Notes are available at http://jdk.java.net/16/release-notes
>
> **
>
>   * Significant changes since the last availability email:
>       o Build 15
>           + JDK-8244090: public lookup should find public members of
>             public exported types (Reported by Eclipse Jetty)
>           + JDK-8250968: Symlinks attributes not preserved when using
>             jarsigner on zip files
>       o Build 14
>           + JDK-8189744: Deprecate the JDK-specific API for setting
>             socket options, jdk.net.Sockets
>           + JDK-8241003: Deprecate "denigrated" java.security.cert APIs
>             that represent DNs as Principal or String objects
>           + JDK-8245462: The default HttpClient implementation returns
>             cancelable futures
>
>
> *__*
> Rgds,Rory
>
> [1]
> https://mail.openjdk.java.net/pipermail/jdk-dev/2020-September/004733.html
> [2] https://openjdk.java.net/projects/jdk/15/
> --
>
> Rgds, Rory O'Donnell
> Quality Engineering Manager
> Oracle EMEA, Dublin, Ireland
>
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