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Posted to dev@lucene.apache.org by "Alan Woodward (JIRA)" <ji...@apache.org> on 2016/03/24 20:27:25 UTC
[jira] [Updated] (LUCENE-6871) Move SpanQueries out of .spans
package
[ https://issues.apache.org/jira/browse/LUCENE-6871?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Alan Woodward updated LUCENE-6871:
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Attachment: LUCENE-6871.patch
Here's an updated patch that just moves everything out of the .spans package into oal.search. I think this is worth doing before 6.0? It would also allow us to make package-private a bunch of classes in oal.search that are currently public but marked as internal, just because they're used by Spans.
Merging SpanTermQuery and TermQuery, etc, can be looked at in follow up issues.
> Move SpanQueries out of .spans package
> --------------------------------------
>
> Key: LUCENE-6871
> URL: https://issues.apache.org/jira/browse/LUCENE-6871
> Project: Lucene - Core
> Issue Type: Improvement
> Affects Versions: 5.4, master
> Reporter: Alan Woodward
> Attachments: LUCENE-6871.patch, LUCENE-6871.patch
>
>
> SpanQueries are now essentially the same as a standard query, restricted to a single field and with an extra scorer type returned by getSpans(). There are a number of existing queries that fit this contract, including TermQuery and PhraseQuery, and it should be possible to make them SpanQueries as well without impacting their existing performance. However, we can't do this while SpanQuery and its associated Weight and Spans classes are in their own package.
> I'd like to remove the o.a.l.search.spans package entirely, in a few stages:
> 1) Move SpanQuery, SpanWeight, Spans, SpanCollector and FilterSpans to o.a.l.search
> 2) Remove SpanTermQuery and merge its functionality into TermQuery
> 3) Move SpanNear, SpanNot, SpanOr and SpanMultiTermQueryWrapper to o.a.l.search
> 4) Move the remaining SpanQueries to the queries package
> Then we can look at, eg, making PhraseQuery a SpanQuery, removing SpanMTQWrapper and making MultiTermQuery a SpanQuery, etc.
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