[jira] [Resolved] (FELIX-6396) Multi-release jar bundles?

["Jean-Baptiste Onofré (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/FELIX-6396?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Jean-Baptiste Onofré resolved FELIX-6396.
-----------------------------------------
    Resolution: Not A Problem

> Multi-release jar bundles?
> --------------------------
>
>                 Key: FELIX-6396
>                 URL: https://issues.apache.org/jira/browse/FELIX-6396
>             Project: Felix
>          Issue Type: Bug
>         Environment: Karaf 4.30
> openjdk-14.0.2
> Windows Server 2016
>            Reporter: Scott Leschke
>            Assignee: Jean-Baptiste Onofré
>            Priority: Major
>
> I have a JDBC driver jar (SAP HANA), that is built both as a bundle and an MRJar file supporting JDKs 1.8, 9, 11. It works fine when I run Karaf using JDK 1.8, but if I try to use a more recent JDK, the driver throws the following
> *Caused by: java.lang.AssertionError: Unexpected Java class loaded under Java version 11 (maximum supported version is 8)*
> at com.sap.db.jdbc.DriverSapDB._checkJavaVersion(DriverSapDB.java:2055) ~[?:?]
> at com.sap.db.jdbc.DriverSapDB.checkJavaVersionMaximum8(DriverSapDB.java:2030) ~[?:?]
> at com.sap.db.jdbc.Driver.(Driver.java:17) ~[?:?]
> An SAP technical person says they think the classloader isn’t MRJar aware and is loading the incorrect class. I most recently tried this with OpenJDK 14.x. Since OSGi involves lots of classloader magic, might that be the case or might something else be going on here?
> The JDBC driver in question is SAP HANA file is ngdbc-2.5.52.jar although newer versions exist. The driver can be downloaded from here:
> [https://mvnrepository.com/artifact/com.sap.cloud.db.jdbc/ngdbc]
> Thanks and regards,
> Scott Leschke



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