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Posted to dev@lucene.apache.org by "ASF subversion and git services (JIRA)" <ji...@apache.org> on 2018/04/03 08:39:00 UTC
[jira] [Commented] (LUCENE-8196) Add IntervalQuery and
IntervalsSource to expose minimum interval semantics across term fields
[ https://issues.apache.org/jira/browse/LUCENE-8196?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16423660#comment-16423660 ]
ASF subversion and git services commented on LUCENE-8196:
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Commit 00eab54f9d6232c68a93f10ff20e3a724ffeca14 in lucene-solr's branch refs/heads/master from [~romseygeek]
[ https://git-wip-us.apache.org/repos/asf?p=lucene-solr.git;h=00eab54 ]
LUCENE-8196: Add IntervalQuery and IntervalsSource to the sandbox
> Add IntervalQuery and IntervalsSource to expose minimum interval semantics across term fields
> ---------------------------------------------------------------------------------------------
>
> Key: LUCENE-8196
> URL: https://issues.apache.org/jira/browse/LUCENE-8196
> Project: Lucene - Core
> Issue Type: New Feature
> Reporter: Alan Woodward
> Assignee: Alan Woodward
> Priority: Major
> Attachments: LUCENE-8196.patch, LUCENE-8196.patch, LUCENE-8196.patch, LUCENE-8196.patch, LUCENE-8196.patch
>
> Time Spent: 10m
> Remaining Estimate: 0h
>
> This ticket proposes an alternative implementation of the SpanQuery family that uses minimum-interval semantics from [http://vigna.di.unimi.it/ftp/papers/EfficientAlgorithmsMinimalIntervalSemantics.pdf] to implement positional queries across term-based fields. Rather than using TermQueries to construct the interval operators, as in LUCENE-2878 or the current Spans implementation, we instead use a new IntervalsSource object, which will produce IntervalIterators over a particular segment and field. These are constructed using various static helper methods, and can then be passed to a new IntervalQuery which will return documents that contain one or more intervals so defined.
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