Details
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New Feature
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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
The ability to find out exactly what a query has matched on is a fairly frequent feature request, and would also make highlighters much easier to implement. There have been a few attempts at doing this, including adding positions to Scorers, or re-writing queries as Spans, but these all either compromise general performance or involve up-front knowledge of all queries.
Instead, I propose adding a method to Weight that exposes an iterator over matches in a particular document and field. It should be used in a similar manner to explain() - ie, just for TopDocs, not as part of the scoring loop, which relieves some of the pressure on performance.
Attachments
Attachments
Issue Links
- supercedes
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LUCENE-3318 Sketch out highlighting based on term positions / position iterators
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- Closed
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- links to
