Atri Sharma created LUCENE-8949:
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Summary: Allow LeafFieldComparators to publish feature values
Key: LUCENE-8949
URL: https://issues.apache.org/jira/browse/LUCENE-8949
Project: Lucene - Core
Issue Type: Improvement
Reporter: Atri Sharma
We allow LeafFieldComparators to only accept a docID, get the equivalent
feature value(s) and compare against the bottom/top of the values set for the
comparator. This mandates that the values being compared against the bottom/top
should originate from the same comparator. This does not allow use cases such
as cross comparator value comparisons i.e. if a user wanted to compute the
"global" minimum across multiple comparators.
FieldComparators expose an API to get the feature value corresponding to a
docID. We should let LeafFieldComparators do the same. A new comparison method
is not required since the parent FieldComparator's compare method can be used
once the values are retrieved.
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