cocoon-dev mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From "Carsten Ziegeler" <cziege...@sundn.de>
Subject AW: [C2] lastModificationDate misuse?
Date Tue, 14 Aug 2001 15:04:09 GMT
> Stuart Roebuck wrote:
> 
> (My tour through Cocoon continues...)
> 
Great!

> In SitemapSource.java are the lines:
> 
> > // the event pipeline is cacheable
> > // now calculate a last modification date
> > String hashKey = pck.toString() + validity.toString();
> > this.lastModificationDate = HashUtil.hash(hashKey);
> 
> this is used in ProgramGeneratorImpl.java:
> 
> > /*
> >  * FIXME: It's the program (not the instance) that must
> >  * be queried for changes!!!
> >  */
> > if (programInstance != null && 
> > programInstance.modifiedSince(source.getLastModified())) {
> >   // Release the component.
> >   release(programInstance);
> 
> consequently, any use of the ServerPages Generator which takes an input 
> from within the sitemap (e.g. using a "cocoon:/" URI) will result 
> in (on a 
> practically random basis) certain XSP (et. al) pages being regenerated 
> over and over again, and will potentially prevent updated XSP (et. al) 
> from being properly regenerated.
> 
Hm, that is true. The problem is that I don't saw any other way to
implement the lastModificationDate for the SitemapSource than hashing
the key.
Usually this modification date is used in the caching algorithm
and is there only tested against equal. So there this hack works.

Any solution for this?

Carsten

> Stuart.
> 
> -------------------------------------------------------------------------
> Stuart Roebuck                                  stuart.roebuck@adolos.com
> Lead Developer                               Java, XML, MacOS X, XP, etc.
> ADOLOS                                           <http://www.adolos.com/>
> 
> ---------------------------------------------------------------------
> To unsubscribe, e-mail: cocoon-dev-unsubscribe@xml.apache.org
> For additional commands, email: cocoon-dev-help@xml.apache.org
> 

---------------------------------------------------------------------
To unsubscribe, e-mail: cocoon-dev-unsubscribe@xml.apache.org
For additional commands, email: cocoon-dev-help@xml.apache.org


Mime
View raw message