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Subject Re: ValueListHandler pattern with Lucene
Date Sun, 11 Apr 2004 15:28:43 GMT
On Sunday 11 April 2004 17:16, Erik Hatcher wrote:
> Well, yes.... the one we already discussed.  Let your presentation tier
> talk directly to Hits, so you are as efficient as possible with access
> to documents, and only fetch what you need.
> Again, don't let "patterns" get in your way.

Well, the sense of tiers and (BTW: language-independant) patterns is to 
modularize software and make things exchangable. This way
neither the presentation tier nor the search engine is exchangable.

The problem actually is that VLH is designed to have a static list of VOs. VLH 
needs to evolve to support something like a data provider that dynamically 
may add data. The problems here so far is that an Iterator must throw an 
ConcurrentModificationException if the backing data is modified but as data 
in a VLH is actually never removed but only added this should be something 
possible to implement.


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