[jboss-jira] [JBoss JIRA] (JASSIST-264) avassist.ModuleClassPath throws NoSuchMethodError when running on Jigsaw EA build

[Mandy Chung (JIRA)]

Mandy Chung created JASSIST-264:
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             Summary: avassist.ModuleClassPath throws NoSuchMethodError when running on Jigsaw EA build
                 Key: JASSIST-264
                 URL: https://issues.jboss.org/browse/JASSIST-264
             Project: Javassist
          Issue Type: Bug
            Reporter: Mandy Chung
            Assignee: Shigeru Chiba


Project Jigsaw EA build is available for download at 
    http://openjdk.java.net/projects/jigsaw/ea

The Jigsaw EA build is the latest prototype implementation of JSR 376, the Java Platform Module System, that implements the proposals to resolve the JSR 376 open issues:
   http://openjdk.java.net/projects/jigsaw/spec/issues/

java.lang.NoSuchMethodError: java.lang.reflect.Layer.parent()Ljava/util/Optional;
	at javassist.ModuleClassPath.<init>(ModuleClassPath.java:53)
	at javassist.ModuleClassPath.<init>(ModuleClassPath.java:39)
	at javassist.ClassPoolTail.appendSystemPath(ClassPoolTail.java:249)
	at javassist.ClassPool.appendSystemPath(ClassPool.java:944)
	at javassist.ClassPool.<init>(ClassPool.java:179)

is calling java.lang.reflect.Layer::parent method.  Layer::parent method is not present due to the solution #NonHierarchicalLayers issue.

Looks like ModuleClassPath class is added to resolved JASSIST-261 and unclear why Layer::parent is needed.  But looks like this is related to  #ClassFilesAsResources issue in JDK 9 that encapsulate .class file from access.

The Jigsaw EA build has resolved  #ClassFilesAsResources to allow ClassLoader::getResource* methods to access .class files.   Note that this is not in JDK 9 yet.   Please subscribe to jigsaw-dev at openjdk.java.net for announcement.



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