JSP compile hangs

[Eric Blenkush <er...@commongrnd.com>]

Hi,

On Tomcat 5.5.2 I am experiencing very long compile times(and hangs)  
for certain JSP pages. The page has an EL expression like this:

${fn:toUpperCase((fn:toUpperCase((fn:toUpperCase((fn:toUpperCase((fn: 
toUpperCase((fn:toUpperCase((fn:toUpperCase((fn:toUpperCase((fn: 
toUpperCase((fn:toUpperCase((fn:toUpperCase((fn:toUpperCase((fn: 
toUpperCase((fn:toUpperCase((fn:toUpperCase((fn: 
toUpperCase(('b'))))))))))))))))))))))))))))))))))))}

If you remove the extraneous parenthesis it will compile and execute  
very quickly. However, if you add more nested calls to fn:toUpperCase  
compiling will again take a very long time. So, this may be related to  
the number of nested expressions. This is just a test case obviously  
but I am generating JSPs automatically and it is difficult if not  
impossible to avoid EL statements with these nested function calls.  
Resin can compile and execute these pages with ease but I want to stick  
with Tomcat.

Anyone know why this is so slow and how to fix it?

Thanks,
Eric Blenkush


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