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

[Shigeru Chiba (JIRA)]

    [ https://issues.jboss.org/browse/JASSIST-264?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13319981#comment-13319981 ] 

Shigeru Chiba commented on JASSIST-264:
---------------------------------------

Thank you for this info.  I'll check this.

> 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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