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From Stephen Colebourne <>
Subject [io] Regexp filter - help wanted
Date Thu, 27 Jul 2006 23:27:52 GMT
The regexp file filter has been excluded from [io] releases as [io] is 
JDK 1.2 compliant, see

It would however be possible to use reflection to access the JDKs regexp 
facility. Is there anyone, perhaps who is looking to contribute to 
commons for the first time, who would be interested in seeing if this 
approach is viable, and what performance penalty it carries?

Obviously the reflection solution involves using Strings to find if the 
java.util.regex.Pattern exists, and then using reflection to call its 

Note that there is an alternative of using ORO, but I believe we should 
stick with the 'no dependencies' rule for [io] (even one that would be 
optional). And we should at least examine the releaction option.


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