[jboss-jira] [JBoss JIRA] (JASSIST-171) Calling SignatureAttribute$MethodSignature.toString results in RuntimeException: bad descriptor

[ami tabak (JIRA)]

     [ https://issues.jboss.org/browse/JASSIST-171?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

ami tabak updated JASSIST-171:
------------------------------

    Attachment: root-cause.jpg


Root cause is that the delimiter of the inner class Mapper$Context is not $ but rather a "." (dot)e.g. Mapper.Context.

Looking at hadoops source code the inner class is defined as 

"...

public class Mapper<KEYIN, VALUEIN, KEYOUT, VALUEOUT> {

  public class Context ..{
  }

..."
                
> Calling SignatureAttribute$MethodSignature.toString results in RuntimeException: bad descriptor
> -----------------------------------------------------------------------------------------------
>
>                 Key: JASSIST-171
>                 URL: https://issues.jboss.org/browse/JASSIST-171
>             Project: Javassist
>          Issue Type: Feature Request
>    Affects Versions: 3.16.1-GA
>            Reporter: ami tabak
>            Assignee: Shigeru Chiba
>         Attachments: javassistBugSample.zip, root-cause.jpg
>
>
> When attempting to instrument  "org.apache.hadoop.examples.WordCount$TokenizerMapper" 
> Am getting the following error:
> Exception in thread "main" java.lang.RuntimeException: bad descriptor: o
> 	at javassist.bytecode.Descriptor.toClassName(Descriptor.java:105)
> 	at javassist.bytecode.SignatureAttribute$BaseType.toString(SignatureAttribute.java:450)
> 	at java.lang.String.valueOf(Unknown Source)
> 	at java.lang.StringBuffer.append(Unknown Source)
> 	at javassist.bytecode.SignatureAttribute$Type.toString(SignatureAttribute.java:419)
> 	at javassist.bytecode.SignatureAttribute$MethodSignature.toString(SignatureAttribute.java:275)
> 	at java.lang.String.valueOf(Unknown Source)
> 	at java.lang.StringBuilder.append(Unknown Source)
> 	at com.optier.bug.report.Test.main(Test.java:50)

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