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https://issues.apache.org/jira/browse/LUCENE-8645?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Alan Woodward updated LUCENE-8645:
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    Attachment: LUCENE-8645.patch

> Add fixed field intervals
> -------------------------
>
>                 Key: LUCENE-8645
>                 URL: https://issues.apache.org/jira/browse/LUCENE-8645
>             Project: Lucene - Core
>          Issue Type: Improvement
>            Reporter: Alan Woodward
>            Assignee: Alan Woodward
>            Priority: Major
>         Attachments: LUCENE-8645.patch
>
>
> It can be useful to report intervals from one fields as if they came from 
> another.  For example, fast prefix searches can be implemented by indexing 
> text into two fields, one with the full terms and one with edge-ngrams 
> enabled; to do proximity searches against terms and prefixes, you could wrap 
> a term query against the ngrammed field so that its intervals appear to come 
> from the normal field, and use it an an ordered or unordered interval.
> This is analogous to the FieldMaskingSpanQuery, but has the advantage that we 
> don't use term statistics for scoring interval queries, so there is no issue 
> with mixing up field weights from different fields.



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