RE: [Babeldoc-devel] Pipeline cache refreshing

[Michael A. <mic...@ze...>]

I think that it requires more than that.  First of all, do we want
pipelines changing while documents are being processed?  If not, then,
do we version configs?  How?  What is the most basic operation that is
allowed a consistent set of config data?  All pipelines should present a
consistent set of config data to any single document.  Once any document
has started processing, the config data used for processing that
document should be fixed, in my opinion (I'm open to arguments to the
contrary, though).  A guess it's a bit like transactioning metadata in a
relational database.  If somebody does an ALTER TABLE that affects data
your query is busy with, you don't want it affecting your data (because
it's likely to be catastrophic).

So, I'm open to ideas and opinions.

Cheers...


MikeA



On Thu, 2003-12-11 at 14:17, McDonald, Bruce wrote:
> Yes, 
> 
> Do that.
> 
> At a more fundamental level, we probably need to implement an listener pattern on the configserver.  The client classes of the configuration data (pipelines, journal, etc, etc) add themselves as data change listeners to the configuration classes thereby being notified when the underlying data changes.  They could register for change notices when the config files changes...
> 
> just an idea.
> 
> Bruce.
> 
> -----Original Message-----
> From: Michael Ansley [mailto:mic...@ze...]
> Sent: Wednesday, December 10, 2003 7:22 PM
> To: bab...@li...
> Subject: [Babeldoc-devel] Pipeline cache refreshing
> 
> 
> Hi,
> 
> I'm back on the trail of config refreshing, and now attacking the
> pipeline configs.  It seems that PipelineFactory has a method
> clearCache() and also clearCache(String name), but these methods are not
> deemed generic to the role of IPipelineFactory.  Can I make them
> generic?  Or are there implementations of IPipelineFactory for which
> they do not make sense?
> 
> Cheers...
> 
> 
> MikeA
> 
> 
> 
> 
> 
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