[SLING-7312] Java 9 requires javax.annotation to be added to the classpath

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Fix Version/s: Starter 11
• Component/s: Launchpad
• Assignee: Karl Pauls
• Reporter: Robert Munteanu
• Created: 14/Dec/17 09:16
• Updated: 23/Oct/18 09:18
• Resolved: 23/Aug/18 21:37

Description

When running on Java 9 post SLING-7186 startup fails due to the javax.annotation package no longer being exported by default, e.g.

org.osgi.framework.BundleException: Unable to resolve org.apache.sling.installer.core [2](R 2.0): missing requirement [org.apache.sling.installer.core [2](R 2.0)] osgi.wiring.package; (osgi.wiring.package=javax.annotation) Unresolved requirements: [[org.apache.sling.installer.core [2](R 2.0)] osgi.wiring.package; (osgi.wiring.package=javax.annotation)]
	at org.apache.felix.framework.Felix.resolveBundleRevision(Felix.java:4149)
	at org.apache.felix.framework.Felix.startBundle(Felix.java:2119)
	at org.apache.felix.framework.Felix.setActiveStartLevel(Felix.java:1373)
	at org.apache.felix.framework.FrameworkStartLevelImpl.run(FrameworkStartLevelImpl.java:308)
	at java.base/java.lang.Thread.run(Thread.java:844)

The interesting part here is that the javax.annotation classes that are required - for instance javax.annotation.CheckForNull are not part of the JDK-provided javax.annotation package, they must come from another jar. In fact, we don't have that Jar deployed in the starter, but instead the JDK provides:

Generated.class
PostConstruct.class
PreDestroy.class
Resource.class
Resources.class

In a sense, this is very close to the root cause of SLING-7135 - solving one might solve both but the symptoms are very different so raising it separately.

Issue Links

• blocks: SLING-7235 Remove requirement for --add-modules java.se.ee
• is blocked by: SLING-7798 Switch from JSR-305 annotations to JetBrains Nullable/NotNull annotations
• relates to: JCR-4301 get rid of JSR 305 dependency
• relates to: OAK-7368 update to findbugs version compatible with jdk 10