[ https://issues.apache.org/jira/browse/OPENJPA-2337?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13582633#comment-13582633 ] 

Romain Manni-Bucau commented on OPENJPA-2337:
---------------------------------------------

i know but it is used, there no warning logged or anything letting think the classes are modified
                
> ClassFileTransformer modifies bytecode
> --------------------------------------
>
>                 Key: OPENJPA-2337
>                 URL: https://issues.apache.org/jira/browse/OPENJPA-2337
>             Project: OpenJPA
>          Issue Type: Bug
>          Components: Enhance
>    Affects Versions: 2.2.0, 2.2.1
>            Reporter: Romain Manni-Bucau
>            Priority: Blocker
>
> When using the JPA ClassFileTransformer from a javaagent the expected workflow is to simply convert in memory original class byte[] to an enhanced byte[].
> However since the code is shared with ant task, mvn plugin and main() enhancer it also updates the file physically.
> That's a pain for load time weaving.
> Could it be skipped when using the ClassFileTransformer?
> sounds like a bug for me, wdyt?

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