I don't know of a place where the differences between jakarta-regexp and
jakarta-oro have been summarized.
But, Let me tell you my observations when comparing jakarta-regexp-1.2.jar and
jakarta-oro-2.0.2-dev-2.jar...
Basically, the regexp package is smaller and has a reduced feature set.
In fact, the regexp package jar file is less than half the size of the oro
package jar.
Initially, regexp handles matching (and rejecting matches) more quickly. But,
after a few hundred matches, the time required by the regexp package
(especially in rejecting matches) increases considerably when compared to
the oro package.
A major benefit I've seen to the oro package involves regular expression
quantifiers "{n,m}"... The regexp package appears to take _much_ longer
at processing regular expressions that use curly brace quantifiers ({n,m}).
-- Ignore my statement above about regexp being faster in matches if you're
using curly brace quantifiers.
Things that I haven't used, so I can't say much about:
Both classes provide POSIX character classes
The oro package provides classes for awk regular expression syntax
Hope this helps.
Ed.
// Edward Chidester
// Software Engineer MNIS - Textwise Labs
// (315) 426-9311 x232 401 South Salina Street
// [EMAIL PROTECTED] Syracuse, NY 13202
Brian Ulicny <[EMAIL PROTECTED]> wrote:
>
> Can anyone summarize the differences between the ORO package and the Regexp
> package, or point me to where the differences are summarized?
>
> Thanks,
>
> Brian Ulicny, PhD
> Director of Research
> Expound, Inc.
> 28 Crosby Drive
> Bedford MA 01730
> USA
> [EMAIL PROTECTED]
> www.expoundinc.com
> 781 687 6051
