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https://issues.apache.org/jira/browse/LUCENE-8606?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Christian Ziech updated LUCENE-8606:
------------------------------------
    Attachment: 0001-LUCENE-8606-overwriting-the-explain-method-for-Cachi.patch

> ConstantScoreQuery looses explain details of wrapped query
> ----------------------------------------------------------
>
>                 Key: LUCENE-8606
>                 URL: https://issues.apache.org/jira/browse/LUCENE-8606
>             Project: Lucene - Core
>          Issue Type: Improvement
>            Reporter: Christian Ziech
>            Priority: Major
>         Attachments: 
> 0001-LUCENE-8606-adding-a-constructor-for-the-ConstantSco.patch, 
> 0001-LUCENE-8606-overwriting-the-explain-method-for-Cachi.patch
>
>
> Right now the ConstantScoreWeigth used by the ConstantScoreQuery is not 
> adding the details of the wrapped query to the explanation. 
> {code}
> if (exists) {
>     return Explanation.match(score, getQuery().toString() + (score == 1f ? "" 
> : "^" + score));
> } else {
>     return Explanation.noMatch(getQuery().toString() + " doesn't match id " + 
> doc);
> }
> {code}
> This is kind of inconvenient as it makes it kind of hard to figure out which 
> term finally really matched when one e.g. puts a BooleanQuery into the FILTER 
> clause of another BooleanQuery.



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