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From "Uwe Schindler" <...@thetaphi.de>
Subject RE: LowerCaseFilter, is there a reason why the class is final?
Date Thu, 10 Sep 2009 14:14:41 GMT
I forget, this known as "Decorator Pattern":
http://en.wikipedia.org/wiki/Decorator_pattern

-----
Uwe Schindler
H.-H.-Meier-Allee 63, D-28213 Bremen
http://www.thetaphi.de
eMail: uwe@thetaphi.de


> -----Original Message-----
> From: Uwe Schindler [mailto:uwe@thetaphi.de]
> Sent: Thursday, September 10, 2009 4:09 PM
> To: java-dev@lucene.apache.org
> Subject: RE: LowerCaseFilter, is there a reason why the class is final?
> 
> See https://issues.apache.org/jira/browse/LUCENE-1753
> 
> In general, if you want to add functionality plug another filter into the
> chain. At least the implementations should be final (next/incrementToken).
> 
> -----
> Uwe Schindler
> H.-H.-Meier-Allee 63, D-28213 Bremen
> http://www.thetaphi.de
> eMail: uwe@thetaphi.de
> 
> 
> > -----Original Message-----
> > From: Daniel Shane [mailto:shaned@LEXUM.UMontreal.CA]
> > Sent: Thursday, September 10, 2009 4:06 PM
> > To: java-dev@lucene.apache.org
> > Subject: LowerCaseFilter, is there a reason why the class is final?
> >
> > Hi all,
> >
> > I was wondering why the LowerCaseFilter is declared final? In my code, I
> > would like to extend it but apparently its not possible. I'm just
> > wondering why extending this type of class is considered evil?
> >
> > Daniel Shane
> >
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> 
> 
> 
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