[Opensource] Really strange bug when using Expresso in Tomcat 4.1

[Michael Rimov]

At 06:57 AM 9/18/2003, you wrote:
>I found out a very strange behaviour when running expresso on Tomcat 4.1,
>which doesn't come up in tomcat 4.0.


Hi Raul!

What you're hitting is a tag reuse problem.  The controller element being 
used is still reflecting the initial one even though through the reset of 
the tags before use in the next use of the tag.

I thought this was fixed for 5.3, and POSSIBLY later versions of 5.0.X 
[maybe >.0.3??]  but I can't be sure.  I just remember coming across this 
and a fix posted by somebody on the list.

What's your version you're encountering this.  We'll have to figure out 
what's not getting reset between instance uses.

                                                                 -Mike




>The symptom is OutputTags in JSP don't get refreshed when the transition
>leads to the same page with updated outputs.
>
>I've tracked down the problem up to the level of AttributeTag. What happens
>here is that because of some strange reason, the variable "oneElement" in
>the AttirbuteTag object always points to the output object created the
>first time the page was built, and it doesn't get updated the following
>times, while all other references to this output object point now to the
>new one (myOutput in MYController, and oneOutput in OutputTag).
>
>So for example we have page a.jsp, which shows the output of the state
>promptAState from MyController.
>This page has an "again" button which will lead to the AState of
>MyController, and this state will give it's results again to promptAState,
>who will show them in an output object, and prompt for a new value and
>"again" or "ok".
>
>Let's say that the first time, the output was "123", and the second time it
>was "456". In tomcat 4.0 this works fine, but in tomcat 4.1, it will still
>show "123", no matter how many times I press "again". (I insist that the
>new output object is created and filled up with the right values, and
>OutputTag points to the right object)
>
>
>Any clues?
>
>
>Best regards
>
>
>Raul Davidovich
>
>
>
>
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