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Posted to dev@jena.apache.org by Andy Seaborne <an...@apache.org> on 2018/02/11 18:39:36 UTC
[DRAFT] Apache Jena and Java9
I thought that some text about the status of Jena and Java9 would be
useful to users@ to state the current state. This could go in the 3.7.0
release notes.
Andy
DRAFT:: For discussion
-----------------------------
Java8 is the current LTS version of Java and receives security updates.
The next LTS is Java11. [Sched]
[Sched] http://www.oracle.com/technetwork/java/eol-135779.html
There are different cases for running with Java9:
[1] Run on a Java9 JVM
[2] Build using Java9 JDK, output Java8 classfiles.
[3] Java9 required - language features and runtime library
[4] Java9 modules
[1] at Jena 3.7.0, running with a Java9 platform (except as noted below)
is supported.
[2] at Jena 3.7.0, running maven using Java9 to produce Java8 bytecode
is supported (expect as noted). We now run a Jenkins job daily to check
this for the main jars.
[3] The project has no current plans to require a Java9 language
runtime. The language requirement is still Java8.
[4] Jena jars can work as automatic modules but Jena itself does not
provide a "modules" version. Proper migration needs all the dependencies
to be modules, and also has implications on the upstream. Contribution
and discussions are welcome!
For discussion and background see
[A] http://blog.joda.org/2017/05/java-se-9-jpms-automatic-modules.html
[B] http://blog.joda.org/2017/04/java-se-9-jpms-module-naming.html
And note: Java 9 is obsolete March 2018, as soon as java10 comes out.
http://openjdk.java.net/projects/jdk/10/#Schedule
Notes:
jena-elephas depends on Hadoop that depends on jdk.tools that is not
available in Java9.
Re: [DRAFT] Apache Jena and Java9
Posted by Andy Seaborne <an...@apache.org>.
Good idea - too many uses of "module" as well what with maven.
On 11/02/18 18:53, ajs6f wrote:
> LGTM, with one suggestion: when discussing point [4] modules, maybe use the terms "JPMS" or Jigsaw or "new Java Platform Module System" or something to be very explicit. Some folks pay closer attention than others to "the state of the Java" and it may not be obvious to some what we mean .
>
> ajs6f
>
>> On Feb 11, 2018, at 1:39 PM, Andy Seaborne <an...@apache.org> wrote:
>>
>> I thought that some text about the status of Jena and Java9 would be useful to users@ to state the current state. This could go in the 3.7.0 release notes.
>>
>> Andy
>>
>> DRAFT:: For discussion
>>
>> -----------------------------
>> Java8 is the current LTS version of Java and receives security updates. The next LTS is Java11. [Sched]
>>
>> [Sched] http://www.oracle.com/technetwork/java/eol-135779.html
>>
>> There are different cases for running with Java9:
>>
>> [1] Run on a Java9 JVM
>> [2] Build using Java9 JDK, output Java8 classfiles.
>> [3] Java9 required - language features and runtime library
>> [4] Java9 modules
>>
>>
>> [1] at Jena 3.7.0, running with a Java9 platform (except as noted below) is supported.
>>
>> [2] at Jena 3.7.0, running maven using Java9 to produce Java8 bytecode is supported (expect as noted). We now run a Jenkins job daily to check this for the main jars.
>>
>> [3] The project has no current plans to require a Java9 language runtime. The language requirement is still Java8.
>>
>> [4] Jena jars can work as automatic modules but Jena itself does not provide a "modules" version. Proper migration needs all the dependencies to be modules, and also has implications on the upstream. Contribution and discussions are welcome!
>>
>> For discussion and background see
>>
>> [A] http://blog.joda.org/2017/05/java-se-9-jpms-automatic-modules.html
>> [B] http://blog.joda.org/2017/04/java-se-9-jpms-module-naming.html
>>
>>
>> And note: Java 9 is obsolete March 2018, as soon as java10 comes out.
>> http://openjdk.java.net/projects/jdk/10/#Schedule
>>
>> Notes:
>>
>> jena-elephas depends on Hadoop that depends on jdk.tools that is not available in Java9.
>
Re: [DRAFT] Apache Jena and Java9
Posted by ajs6f <aj...@apache.org>.
LGTM, with one suggestion: when discussing point [4] modules, maybe use the terms "JPMS" or Jigsaw or "new Java Platform Module System" or something to be very explicit. Some folks pay closer attention than others to "the state of the Java" and it may not be obvious to some what we mean .
ajs6f
> On Feb 11, 2018, at 1:39 PM, Andy Seaborne <an...@apache.org> wrote:
>
> I thought that some text about the status of Jena and Java9 would be useful to users@ to state the current state. This could go in the 3.7.0 release notes.
>
> Andy
>
> DRAFT:: For discussion
>
> -----------------------------
> Java8 is the current LTS version of Java and receives security updates. The next LTS is Java11. [Sched]
>
> [Sched] http://www.oracle.com/technetwork/java/eol-135779.html
>
> There are different cases for running with Java9:
>
> [1] Run on a Java9 JVM
> [2] Build using Java9 JDK, output Java8 classfiles.
> [3] Java9 required - language features and runtime library
> [4] Java9 modules
>
>
> [1] at Jena 3.7.0, running with a Java9 platform (except as noted below) is supported.
>
> [2] at Jena 3.7.0, running maven using Java9 to produce Java8 bytecode is supported (expect as noted). We now run a Jenkins job daily to check this for the main jars.
>
> [3] The project has no current plans to require a Java9 language runtime. The language requirement is still Java8.
>
> [4] Jena jars can work as automatic modules but Jena itself does not provide a "modules" version. Proper migration needs all the dependencies to be modules, and also has implications on the upstream. Contribution and discussions are welcome!
>
> For discussion and background see
>
> [A] http://blog.joda.org/2017/05/java-se-9-jpms-automatic-modules.html
> [B] http://blog.joda.org/2017/04/java-se-9-jpms-module-naming.html
>
>
> And note: Java 9 is obsolete March 2018, as soon as java10 comes out.
> http://openjdk.java.net/projects/jdk/10/#Schedule
>
> Notes:
>
> jena-elephas depends on Hadoop that depends on jdk.tools that is not available in Java9.