Alan Woodward created LUCENE-8645:
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Summary: 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
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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