Enable access to the freq information in a Query's sub-scorers
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Key: LUCENE-2590
URL: https://issues.apache.org/jira/browse/LUCENE-2590
Project: Lucene - Java
Issue Type: Improvement
Components: Search
Reporter: Michael McCandless
Assignee: Michael McCandless
The ability to gather more details than just the score, of how a given
doc matches the current query, has come up a number of times on the
user's lists. (most recently in the thread "Query Match Count" by
Ryan McV on java-user).
EG if you have a simple TermQuery "foo", on each hit you'd like to
know how many times "foo" occurred in that doc; or a BooleanQuery +foo
+bar, being able to separately see the freq of foo and bar for the
current hit.
Lucene doesn't make this possible today, which is a shame because
Lucene in fact does compute exactly this information; it's just not
accessible from the Collector.
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