Details
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Improvement
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Status: Closed
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Major
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Resolution: Fixed
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None
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None
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None
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New
Description
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.