Robert Muir created LUCENE-4316:
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Summary: Deprecate Fields.getUniqueTermCount, remove
AtomicReader.getUniqueTermCount
Key: LUCENE-4316
URL: https://issues.apache.org/jira/browse/LUCENE-4316
Project: Lucene - Core
Issue Type: Task
Reporter: Robert Muir
Spinoff from LUCENE-4315.
This was my comment there:
{noformat}
we should consider Fields.getUniqueTermCount,
which has a default implementation that sums across fields (preflex overrides).
This was necessary to have some way to access the segment-level unique term
count for 3.x indexes,
which do not actually know this information per-field and override this method
to provide it.
But there is no need to have this on AtomicReader (I think its way too expert,
just get the Fields
and get it from there), and we can consider deprecating this in 4.x and
removing it in trunk
alltogether as then someone can just use the field-level statistics.
{noformat}
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