[JEXL-376] Introspector captures methods on non-exported classes (modules, java9+)

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 3.2.1
• Fix Version/s: 3.3
• Assignee: Henri Biestro
• Reporter: Henri Biestro
• Created: 24/Jul/22 10:38
• Updated: 27/Mar/23 10:59
• Resolved: 24/Jul/22 15:20

Description

WHAT:
When running on Java9+, module encapsulation shields classes from usage even through reflection. The introspector is unfortunately not aware of this leading to unexpected runtime errors.
Error looks like this:
<code>
class org.apache.commons.jexl3.internal.introspection.MethodExecutor cannot access class sun.net.www.protocol.https.HttpsURLConnectionImpl (in module java.base) because module java.base does not export sun.net.www.protocol.https to unnamed module @1e5c7dc
</code>

HOW:
Through reflection (since we are compiling/releasing on Java8), add a check before introspection in the ClassMap.