[ http://issues.apache.org/jira/browse/JELLY-85?page=comments#action_57890 
]
     
Hans Gilde commented on JELLY-85:
---------------------------------

Well... It's not how Jelly works now, so I'll have to think about it. I'm 
really in favor of this: splitting off the different bits of functionality from 
JellyContext. While we're doing this, we could think about which parts are 
thread safe and which parts need to be kept in the same thread.

> TagScript doesn't clear its cached tags after run()
> ---------------------------------------------------
>
>          Key: JELLY-85
>          URL: http://issues.apache.org/jira/browse/JELLY-85
>      Project: jelly
>         Type: Bug
>   Components: core / taglib.core
>     Versions: 1.0-beta-4
>     Reporter: Scott Howlett
>  Attachments: StaticTagScript_patch.txt, TagScript_patch.txt, 
> includeAndDefineExample.zip
>
> TagScript caches the tags it generates in a ThreadLocal. At the beginning of 
> run() it checks to see if the context wants to cache tags - if not, it clears 
> the cache and regenerates it.
> But there is no corresponding check and cache clearing at the end of run(). 
> So if a tag holds onto some significant resource, that resource will hang 
> around until the thread goes away or until the tag is run again.
> I am using Jelly Swing extensively, and various tags end up attached to the 
> AWT Event thread for the lifetime of my application.
> As a quick fix, I have a patch that simply repeats the check-and-clear-cache 
> behavior at the end of TagScript.run(). I also have a patch that adds this 
> behavior to StaticTagScript, whose run() never seems to clear cached tags.
> I am probably just unclear, but it seems to me that there is a deeper issue 
> as well - the context is being asked whether it wants to cache tags, but the 
> result of this question affects the TagScript, which is really independent of 
> the context. It seems like if context wants to cache tags, perhaps the 
> ThreadLocal used for their storage ought to belong to the context somehow.

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