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List:       jakarta-commons-dev
Subject:    Fwd: [Lang] ClassCastException in Enum.compareTo()
From:       "Henri Yandell" <flamefew () gmail ! com>
Date:       2007-02-27 19:47:10
Message-ID: 31cc37360702271147g716ec087xe49da9f8d458f10f () mail ! gmail ! com
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Forwarding over from the user list. Any opinions Stephen?

---------- Forwarded message ----------
From: Adam Paster <apaster@yahoo.com>
Date: Feb 27, 2007 3:55 AM
Subject: Re: [Lang] ClassCastException in Enum.compareTo()
To: Henri Yandell <flamefew@gmail.com>
Cc: Jakarta Commons Users List <commons-user@jakarta.apache.org>


In my example below, I was referring to the OperationEnum class defined
at
http://svn.apache.org/repos/asf/jakarta/commons/proper/lang/tags/LANG_2_3/src/test/org/apache/commons/lang/enums/OperationEnum.java


So, even though the two enums have different classnames, the
Enum.compareTo() method should take the getEnumClass() into account to
decide whether a ClassCastException should be thrown....

Regards
  Adam

Henri Yandell wrote:
> Looking at the svn log history, I presume it's due either to LANG-259
> or LANG-127:
> 
> https://issues.apache.org/jira/browse/LANG-259
> https://issues.apache.org/jira/browse/LANG-127
> 
> Both were in 2.2, so 2.2 will be equally problematic for you.
> 
> LANG-127 took the code that was already in equals() to use reflection
> when classes are in different classloaders, LANG-259 adding the
> ClassCastException when the classes are in different classloaders and
> the two enums do not have the same classname.
> 
> Does that fit with your MINUS/PLUS enums? Do they have different
> classnames?
> 
> Hen
> 
> On 2/27/07, Adam Paster <apaster@yahoo.com> wrote:
> > Hi
> > 
> > In commons lang 2.1 the following code used to work:
> > OperationEnum.MINUS.compareTo(OperationEnum.PLUS)
> > But when I upgraded to version 2.3 it throws a ClassCastException. Is
> > this a regression?
> > 
> > Many thanks
> > Adam
> > 
> > 
> > 
> > 
> > 
> > 
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