Thanks for the quick reply, Erick. A couple of follow-up questions though.
If I had 200 fields (instead of 10), would you still recommend the same
approach? Would 200 filters use up too much memory? Would 200 filters
be too slow to construct/search?
From: "Erick Erickson" <[EMAIL PROTECTED]>
Reply-To: java-user@lucene.apache.org
To: java-user@lucene.apache.org
Subject: Re: Empty fields ...
Date: Tue, 18 Jul 2006 10:41:28 -0400
You could use a filter. You'd just construct a filter with the bits on for
all docs that had that term. You could cache these to make future searchers
easier. I envision, say, caching one filter for each field and keeping them
around so you could re-use them whenever you wanted.
See ConstantScoreQuery, CachingWrapperFilter, Filter, etc.... Note, you'd
only have to construct these once and (I believe) that CachingWrapperFilter
will keep them around for you, for how long I'm unclear. I was quite
surprised by how quickly filters can be constructed.....
Hope this helps
Erick
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