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From "Rick Curtis (Closed) (JIRA)" <j...@apache.org>
Subject [jira] [Closed] (OPENJPA-888) Empty method in an entity causes errors while enhancing
Date Fri, 16 Mar 2012 16:33:39 GMT

     [ https://issues.apache.org/jira/browse/OPENJPA-888?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Rick Curtis closed OPENJPA-888.
-------------------------------

    Resolution: Won't Fix

I'm closing this issue for a number of reasons...

1.] This is a serp bug, not an OpenJPA bug.
2.] Serp is pretty much dead and no one is going to cut a new serp release for this one problem.
3.] There is a valid workaround.

Thanks,
Rick
                
> Empty method in an entity causes errors while enhancing
> -------------------------------------------------------
>
>                 Key: OPENJPA-888
>                 URL: https://issues.apache.org/jira/browse/OPENJPA-888
>             Project: OpenJPA
>          Issue Type: Bug
>          Components: kernel
>    Affects Versions: 1.2.0
>            Reporter: Simone Gianni
>
> I have a class subclassing another class. Both are entities. They have a method, which
has nothing to do with JPA cause it's not a getter o a setter. The subclass overrides this
method with an empty implementation, that is @Override public void theMethod() {} .
> As a result, OpenJPA throws an error while enhancing the subclass, more specifically
the stacktrace is relative at SERP internals :
> java.lang.ClassCastException: serp.bytecode.CodeEntry cannot be cast to serp.bytecode.Instruction
>         at serp.bytecode.Local.getEnd(Local.java:114)
>         at serp.bytecode.Local.updateTargets(Local.java:155)
>         at serp.bytecode.LocalTable.updateTargets(LocalTable.java:163)
>         at serp.bytecode.Code.read(Code.java:2031)
>         at serp.bytecode.Attributes.readAttributes(Attributes.java:152)
>         at serp.bytecode.BCMember.read(BCMember.java:365)
>         at serp.bytecode.BCClass.read(BCClass.java:123)
>         at serp.bytecode.Project.loadClass(Project.java:211)
> Looking the Serp code and debugging it, I can confirm it is a SERP error, and opened
a bug on its tracker (https://sourceforge.net/tracker2/?func=detail&aid=2556092&group_id=31479&atid=402282
).
> I'm opening this bug here to track the problem, and eventually use an updated version
of SERP if/when they solve the problem.
> The most obvious workaround (which works) is to write something inside an empty method,
a plain "int i = 0" will do the job.

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