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https://issues.apache.org/jira/browse/LUCENE-1487?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12723098#action_12723098
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Uwe Schindler edited comment on LUCENE-1487 at 6/23/09 8:28 AM:
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Sorry *EDIT*:
This Filter is really cool on iterating on the FieldCache for StringIndex and
can be even faster for ranges, that are int/float/double/... - so why not
retrofit to our new naming-convention and extend:
- FieldCacheRangeFilter.newTermRange()
- FieldCacheRangeFilter.newByteRange()
- FieldCacheRangeFilter.newShortRange()
- FieldCacheRangeFilter.newIntRange()
- ...
It could because of that also be used on "old" int/long fields of dates, if a
good parser is given (parser that does SimpleDateFormat -> long -> FieldCache
-> direct comparison on this raw numbers). I would try to extend this to all
types and it can be faster than TrieRange, if the range is already in
FieldCache!
was (Author: thetaphi):
Is this Filter really needed anymore?
If yes, why not create an FieldCacheRangeFilter that can handle any data type
from FieldCache:
- FieldCacheRangeFilter.newTermRange()
- FieldCacheRangeFilter.newByteRange()
- FieldCacheRangeFilter.newShortRange()
- FieldCacheRangeFilter.newIntRange()
- ...
> FieldCacheTermsFilter
> ---------------------
>
> Key: LUCENE-1487
> URL: https://issues.apache.org/jira/browse/LUCENE-1487
> Project: Lucene - Java
> Issue Type: New Feature
> Components: Search
> Affects Versions: 2.4
> Reporter: Tim Sturge
> Assignee: Michael McCandless
> Fix For: 2.9
>
> Attachments: FieldCacheTermsFilter.java, FieldCacheTermsFilter.java,
> LUCENE-1487.patch
>
>
> This is a companion to FieldCacheRangeFilter except it operates on a set of
> terms rather than a range. It works best when the set is comparatively large
> or the terms are comparatively common.
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