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https://issues.apache.org/jira/browse/LUCENE-1461?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Tim Sturge updated LUCENE-1461:
-------------------------------

    Attachment: LUCENE-1461b.patch

Here's the first cleanup

Changes:

RangeMultiFilter now FieldCacheRangeFilter

FieldCache.StringIndex gains a binarySearchLookup() method that handles null

toString(), hashCode() and equals() methods.

This hasn't been tested very well; but I wanted to post something before I left 
for Thanksgiving.


> 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.

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