Support for Java 17 (LTS)

[tfr42]

As runtime environment deegree should support Java 17 and Tomcat 10.1.

• add new build job or stage with JDK 17 to Jenkins CI
• Add support for Tomcat 10.0 and 10.1  #1401
• JAXB v3 #1457 - upgrade JAXB from 2.3 to 3.0 or 4.0
• Upgrade of Jetty Maven plugin from 9.x to 10.x required #1364

To compile with JDK 17 the following PR have been merged already:

• Bump Mockito from 2.28.2 to 3.12.4 #1373
• Upgrades maven surefire, failsafe, compiler, jaxb2 and jar plugins #1372
• Upgrades maven enforcer plugin and extra rules #1371

References:

• Support for Java 9/10/11+ #857
• https://tomcat.apache.org/whichversion.html

[tfr42]

It is planned to work on this issue during the FOSS4G 2022 Codesprint in Florence. Everyone is invited to join. Read more about the code sprint here: https://wiki.osgeo.org/wiki/FOSS4G_2022/Community_sprint#deegree

[tfr42]

The outcome of the activities during the codesprint at FOSS4G 2022 in Florence and the community hackevent of the FOSSGIS at the LinuxHotel in September 2022 was, that starting up of deegree fails due to missing/incompatible Servlet API as documented in #1401.

[tfr42]

The TMC has the notion to work on this issue during the planned code sprint in autum 2023.

[tfr42]

The need to move towards JDK 17 is triggered by the planned EOL for JDK 11 (dates taken from https://endoflife.date):

• OpenJDK: 2023-09-30 (!)
• Oracle: 2023-09-30 (!)
• Bellsoft Liberica: 2024-10-31
• Adoptium (used on Jenkins to build and test): Oct. 2024
• Azul Zulu: 2026-09-30
• Corretto: Sep. 2027

[tfr42]

Helpfull page showing the changes in Java Core API: https://javaalmanac.io/

[jruhe-adesso]

Time sands...

[tfr42]

@jruhe-adesso Please check out our wiki page about sponsoring opportunities in 2024 https://github.com/deegree/deegree3/wiki/deegree-budget-2024, which can help to speed up things...

[jruhe-adesso]

I work for an IT service provider. I'll forward your link to the person responsible for the geo topic. Of course, I cannot promise anything. Thank you.
We really appreciate your work on milestone 3.6!

[tfr42]

Build job for JDK 17 added to Jenkins CI and was successfully run: https://buildserver.deegree.org/view/All/job/deegree-3.6-release-pipeline/

[tfr42]

The support of Java 17 was fully implemented with the version 3.6 of deegree webservices, see https://github.com/deegree/deegree3/wiki/End-of-Life-and-Support-Matrix for more information.