I have had no problem using Jena with OSGi on Java 11 (Apache Karaf). You need one of the more recent releases of Karaf, but IIRC I didn't need to do anything unusual.
Are there particular errors you are encountering with OSGi and Jena in a Java 11 JRE? Perhaps we can take up the details in a separate thread. -Aaron On Wed, 6 Jan 2021 at 08:25, Steve Vestal <steve.ves...@adventiumlabs.com> wrote: > The issue has something to do with class loading the context, which > apparently is done differently in an osgi bundle. See, e.g., > http://www.descher.at/descher-vu/2019/01/java-11-jaxb-and-osgi/ > > On 1/6/2021 7:11 AM, Andy Seaborne wrote: > > > > On 05/01/2021 22:46, Steve Vestal wrote: > >> Support for JAXB was removed from Java11. For those using that and > >> Jena in osgi bundles (e.g., Eclipse plugins), my impression from some > >> initial experimenting and searching is that a bit of wizardry is > >> needed to add that on the side and get it working. I could not find > >> a clean and simple solution online. If anyone knows of one, let me > >> know. > > > > Steve, > > > > JABX - and others - have been moved out into self-contained maven > > artifacts. > > > > https://repo1.maven.org/maven2/javax/xml/jaxb-api/ > > > > jena-geosparql uses jaxb-api and compiles for Java11. > > > > Is there something apache-jena-osgi needs to do? > > > > I have been using Jena with JDK11 for sometime - not OSGi - and > > haven't had problems or needsed to make adjustments that I recall. I > > don't understand OSGi enough to see why it makes a difference. > > > > Andy > > > > > >> > >> On 1/5/2021 2:38 PM, Andy Seaborne wrote: > >>> Currently, Jena is compiled to run on any JVM from Java8 onwards. > >>> > >>> Java8 was released March 2014. > >>> Java11 (Sept 2018) is LTS (long term support) > >>> Java17 (due Sept 2021) is probably going to be LTS. > >>> > >>> Should Jena switch to Java11 going forward? > >>> > >>> This message is to ask: > >>> > >>> Are there deployments that do regularly upgrade can not for some > >>> reason move to the Java11 LTS platform? > >>> > >>> > >>> There are the usually issues of moving to a newer Java. There seems > >>> likely to be an emerging bimodal distribution of systems remaining > >>> with Java8 and systems moving to Java11 and Java 17 (likely an LTS - > >>> September 2021). > >>> > >>> The question is how many systems would upgrade their Jena version > >>> and are restricted to Java8 (and why!). > >>> > >>> Java is evolving to better fit in the new tech landscape (e.g. > >>> better container usage), more compact strings (significant for > >>> Jena), and JDK-provided HTTP/2. > >>> > >>> Some dependences or potential dependencies are Java11: > >>> > >>> Titanium - for JSON-LD 1.1 (JENA-1948 - titanium-json-ld ) > >>> > >>> Eclipse Jetty 10 and 11 now depend on Java11. > >>> > >>> Andy > >> > >
