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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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Uwe Schindler updated LUCENE-1461:
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Attachment: LUCENE-1461.patch
Here is an first version of retrofitted FieldCacheRangeFilter. It supports
StringIndex like before for normal string ranges and as an example Byte ranges
on FieldCache.getBytes(). Optional a parser can be given, passed to getBytes().
The internal code structure was changed to make it easier to implement the
iterator for each data type.
The test currently only checks StringIndex (it is the original test), other
datatypes beyond byte are not implemented until now (it's mostly
copy'n'paste...)
> 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
> Assignee: Uwe Schindler
> Fix For: 2.9
>
> Attachments: DisjointMultiFilter.java, FieldCacheRangeFilter.patch,
> LUCENE-1461.patch, LUCENE-1461.patch, LUCENE-1461a.patch, LUCENE-1461b.patch,
> LUCENE-1461c.patch, RangeMultiFilter.java, RangeMultiFilter.java,
> TermMultiFilter.java, TestFieldCacheRangeFilter.patch
>
>
> 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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