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Posted to dev@lucene.apache.org by "Alan Woodward (JIRA)" <ji...@apache.org> on 2019/08/06 10:01:00 UTC
[jira] [Commented] (LUCENE-8747) Allow access to submatches from
Matches instances
[ https://issues.apache.org/jira/browse/LUCENE-8747?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16900840#comment-16900840 ]
Alan Woodward commented on LUCENE-8747:
---------------------------------------
I spoke to [~jimczi] offline, and we agreed that adding a specific use-case to this might make sense, so I've updated the patch to include a new NamedMatches class, with a couple of static helper functions. This class makes it possible to associate names with queries; if those queries are then combined into a larger, complex query, it is easy to retrieve the names of any queries that matched a particular document.
> Allow access to submatches from Matches instances
> -------------------------------------------------
>
> Key: LUCENE-8747
> URL: https://issues.apache.org/jira/browse/LUCENE-8747
> Project: Lucene - Core
> Issue Type: Improvement
> Reporter: Alan Woodward
> Assignee: Alan Woodward
> Priority: Major
> Attachments: LUCENE-8747.patch, LUCENE-8747.patch, LUCENE-8747.patch, LUCENE-8747.patch
>
>
> A Matches object currently allows access to all matching terms from a query, but the structure of the matching query is flattened out, so if you want to find which subqueries have matched you need to iterate over all matches, collecting queries as you go. It should be easier to get this information from the parent Matches object.
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