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Michael McCandless commented on LUCENE-1461: -------------------------------------------- bq. my two techniques for superfast range queries/filters I like those approaches -- I think 2 is similar to [above|#action_12650562] and similar to Uwe's approach (described on java-dev). One nice property of these "factor the range into a set of OR/AND clauses" is RangeQuery no longer relies on the sort order of the terms, which means tricks like padding numeric terms are no longer needed, I think? This sudden burst of innovation around RangeQuery is very exciting! > Cached filter for a single term field > ------------------------------------- > > Key: LUCENE-1461 > URL: https://issues.apache.org/jira/browse/LUCENE-1461 > Project: Lucene - Java > Issue Type: New Feature > Reporter: Tim Sturge > Attachments: DisjointMultiFilter.java, LUCENE-1461a.patch, > LUCENE-1461b.patch, RangeMultiFilter.java, RangeMultiFilter.java, > TermMultiFilter.java > > > These classes implement inexpensive range filtering over a field containing a > single term. They do this by building an integer array of term numbers > (storing the term->number mapping in a TreeMap) and then implementing a fast > integer comparison based DocSetIdIterator. > This code is currently being used to do age range filtering, but could also > be used to do other date filtering or in any application where there need to > be multiple filters based on the same single term field. I have an untested > implementation of single term filtering and have considered but not yet > implemented term set filtering (useful for location based searches) as well. > The code here is fairly rough; it works but lacks javadocs and toString() and > hashCode() methods etc. I'm posting it here to discover if there is other > interest in this feature; I don't mind fixing it up but would hate to go to > the effort if it's not going to make it into Lucene. -- This message is automatically generated by JIRA. - You can reply to this email to add a comment to the issue online. --------------------------------------------------------------------- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]