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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:
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    Attachment: DisjointMultiFilter.java

Base code which builds the integer array.

> 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
>
>
> 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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