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From "Ralph Goers (JIRA)" <j...@apache.org>
Subject [jira] Created: (COCOON-1742) EncodeURLTransformer can get a StackOverflow in jakarta regexp
Date Fri, 27 Jan 2006 20:38:35 GMT
EncodeURLTransformer can get a StackOverflow in jakarta regexp
--------------------------------------------------------------

         Key: COCOON-1742
         URL: http://issues.apache.org/jira/browse/COCOON-1742
     Project: Cocoon
        Type: Bug
  Components: * Cocoon Core  
    Versions: 2.1.8, 2.2-dev (Current SVN)    
    Reporter: Ralph Goers
 Assigned to: Ralph Goers 


EncodeURLTransformer uses jakarta regexp and calls RE.match(). This method ends up calling
matchNode() which recursively calls itself. This is slow and has the potential of causing
a StackOverFlowException .Numerous issues have been opened on jakarta regexp regarding this
but there are no plans to address this.  I have run tests that show that regexp is much slower
than the JDK regular expressions and also slower than ORO.

The fix for this will be to modify the EncodeURLTransformer in 2.2-dev to use the JDK regular
expressions.  Since the JDK regular expressions are only available in JDK 1.4 they cannot
directly be used in the 2.1 branch.  Most likely Oro will be used instead.

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