Hi Jesse,

Thanks for clarification. I guess we won't be doing the upgrade :-)

Andrus



Jessek wrote:
> 
> Without a common interface I don't think these objects will ever be
> compilable in to any kind of native code - so you may never be able to
> upgrade to 4.1 if that is your blocking point.   If it were something
> catchable early its possible the statement could fall back to normal
> ognl reflection but in this case the statements are getting compiled
> against one object type successfully and failing later in the native
> code when a new class type is used.
> 
> In Summary:  Find a way to have a common interface for these object
> properties or don't plan on upgrading anytime soon...
> 
> On 8/15/07, Andrus Adamchik <[EMAIL PROTECTED]> wrote:
>>
>> Thanks for the  suggestion. I tried the latest ognl build, but the
>> problem is
>> still there (and in addition I get a bunch of OGNL stack traces in other
>> places).
>>
>> Ok, I guess I can't use 4.1.x just yet :-/
>>
>> Andrus
>>
>>
>>
>> On 8/14/07, Andrus Adamchik <[EMAIL PROTECTED]> wrote:
>> >
>> > I found essentially the same problem in a @For loop over a list of
>> objects
>> > that do not implement any common interface, but (by design) have
>> matching
>> > method names. Tapestry would try to cast to the class of the first
>> object
>> > in
>> > the loop, instead of using a declared class of the loop variable. This
>> > stalled our upgrade to 4.1.2.
>> > I traced it down to HiveMindExpressionCompiler.generateGetter(..), but
>> I
>> > am
>> > still not sure whether this is a Tapestry or OGNL bug (or rather where
>> the
>> > solution should be implemented). BTW where OGNL posts its releases now?
>> I
>> > couldn't find anything beyond 2.6.7.
>> > I wonder if you had a chance to look into this issue?
>> >
>>
>> Just by reading this, I'm 95% sure it's a OGNL issue. Jesse publishes new
>> OGNL snapshots on his repository (
>> http://opencomponentry.com/repository/m2-snapshot-repo/ognl/ognl/2.7.1-SNAPSHOT/).
>> Try excluding the OGNL 2.7 that comes with 4.1.2 and use one of the newer
>> 2.7.1 snapshots (2.7.1-20070723.185910-9 for example solved lots of issue
>> for us). Though I'm still tracking down yet another, similar
>> ClassCastException one even in the latest.
>>
>> Kalle
>>
>>
>>
>> --
>> View this message in context:
>> http://www.nabble.com/Class-cast-exception-in-ASTChain%2C-Bug-OGNL-11-tf4054151.html#a12162563
>> Sent from the Tapestry - User mailing list archive at Nabble.com.
>>
>>
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> 
> 
> -- 
> Jesse Kuhnert
> Tapestry/Dojo team member/developer
> 
> Open source based consulting work centered around
> dojo/tapestry/tacos/hivemind. http://blog.opencomponentry.com
> 
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> 

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