: I need two other pieces of information for display - : 1. I want to show a "select" box on the UI, which contains all the : cities that appear in those 50,000 documents : 2. Against each city I want to show the count of matching documents.
: My problem is, I do not know how to generate that 'select' list : without having to actually access each of those 50,000 documents. the straight forward way to do this, is to use a TermEnumerator to get a list of all the "cities" in your collection, and then for each one construct a Filter. you can then either issue every search N+1 times (once with no filter for real results, and once with each filter to get the counts) or you can use the Filter.bits(IndexReader) method directly with each Filter, and compute the AND of a clone of each with the BitSet generated using a HitCollector when you do your search -- this assumes you have access to the IndexReader. in both cases you can improve performance by using CachingWrapperFilter. If you list of vales for that field is too vast to generate, then you might wnat to take a look at this thread, which i have not read in it's entirety, but what i did read lead me to believe it's the exact same problem you describe... http://www.mail-archive.com/java-dev@lucene.apache.org/msg00034.html -Hoss --------------------------------------------------------------------- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
