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https://issues.apache.org/jira/browse/LUCENE-1603?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Uwe Schindler updated LUCENE-1603:
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Attachment: LUCENE-1603.patch
Patch that provides that filter.
Mike: Can you please test drop-in-backwards-compatibility with this patch
applied, with Windows, the checkout through Ant does not work correctly? I also
set the native line ending svn property of the new file in the patch.
The update of the TrieRange follows after this is committed, code not affected,
compiles still fine.
> Changes for TrieRange in FilteredTermEnum and MultiTermQuery improvement
> ------------------------------------------------------------------------
>
> Key: LUCENE-1603
> URL: https://issues.apache.org/jira/browse/LUCENE-1603
> Project: Lucene - Java
> Issue Type: Improvement
> Affects Versions: 2.4, 2.9
> Reporter: Uwe Schindler
> Assignee: Michael McCandless
> Fix For: 2.9
>
> Attachments: LUCENE-1603.patch, LUCENE-1603.patch, LUCENE-1603.patch
>
>
> This is a patch, that is needed for the MultiTermQuery-rewrite of TrieRange
> (LUCENE-1602):
> - Make the private members protected, to have access to them from the very
> special TrieRangeTermEnum
> - Fix a small inconsistency (docFreq() now only returns a value, if a valid
> term is existing)
> - Improvement of MultiTermFilter.getDocIdSet to return
> DocIdSet.EMPTY_DOCIDSET, if the TermEnum is empty (less memory usage) and
> faster.
> - Add the getLastNumberOfTerms() to MultiTermQuery for statistics on
> different multi term queries and how may terms they affect, using this new
> functionality, the improvement of TrieRange can be shown (extract from test
> case there, 10000 docs index, long values):
> {code}
> [junit] Average number of terms during random search on 'field8':
> [junit] Trie query: 244.2
> [junit] Classical query: 3136.94
> [junit] Average number of terms during random search on 'field4':
> [junit] Trie query: 38.3
> [junit] Classical query: 3018.68
> [junit] Average number of terms during random search on 'field2':
> [junit] Trie query: 18.04
> [junit] Classical query: 3539.42
> {code}
> All core tests pass.
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