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From "Atri Sharma (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (LUCENE-8769) Range Query Type With Logically Connected Ranges
Date Tue, 18 Jun 2019 17:45:00 GMT

    [ https://issues.apache.org/jira/browse/LUCENE-8769?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16866884#comment-16866884
] 

Atri Sharma commented on LUCENE-8769:
-------------------------------------

Thinking more about this, I think what can be done is:

 

1) Introduce NOT semantics by translating NOT (a, b) to (-infinity, a) AND (b, infinity)

2) Introduce a RangeClause which contains a bunch of ranges and associated AND and NOT clauses
(not OR). Each RangeClause will be independently executed, and then the final result then
ANDed or ORed. For eg:

 

(a AND B) OR (c NOT d) converts to two RangeClauses: \{a, b, AND}, \{c, d, NOT}, where the
RangeClauses are connected by OR, so the independent results of both clauses are then ORed
to give final result.

 

Does this seem useful and a doable approach?

> Range Query Type With Logically Connected Ranges
> ------------------------------------------------
>
>                 Key: LUCENE-8769
>                 URL: https://issues.apache.org/jira/browse/LUCENE-8769
>             Project: Lucene - Core
>          Issue Type: Improvement
>            Reporter: Atri Sharma
>            Priority: Major
>         Attachments: LUCENE-8769.patch, LUCENE-8769.patch, LUCENE-8769.patch
>
>
> Today, we visit BKD tree for each range specified for PointRangeQuery. It would be good
to have a range query type which can take multiple ranges logically ANDed or ORed.



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