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Posted to dev@lucene.apache.org by "Adrien Grand (JIRA)" <ji...@apache.org> on 2019/07/01 11:56:00 UTC

[jira] [Commented] (LUCENE-8882) Add State To QueryVisitor

    [ https://issues.apache.org/jira/browse/LUCENE-8882?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16876132#comment-16876132 ] 

Adrien Grand commented on LUCENE-8882:
--------------------------------------

Can you elaborate more on how this would help replace IndexOrDocValues?

> Add State To QueryVisitor
> -------------------------
>
>                 Key: LUCENE-8882
>                 URL: https://issues.apache.org/jira/browse/LUCENE-8882
>             Project: Lucene - Core
>          Issue Type: Improvement
>            Reporter: Atri Sharma
>            Priority: Major
>          Time Spent: 20m
>  Remaining Estimate: 0h
>
> QueryVisitor has no state passed in either up or down recursion. This limits the width of decisions that can be taken by visitation of QueryVisitor. For eg, for LUCENE-8881, we need a way to specify is the visitor is a rewriter visitor.
>  
> This Jira proposes adding a property bag model to QueryVisitor, which can then be referred to by the Query instance being visited by QueryVisitor.



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