Weight.scorer() not passed doc offset for "sub reader"
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Key: LUCENE-1821
URL: https://issues.apache.org/jira/browse/LUCENE-1821
Project: Lucene - Java
Issue Type: Bug
Components: Search
Affects Versions: 2.9
Reporter: Tim Smith
Now that searching is done on a per segment basis, there is no way for a Scorer
to know the "actual" doc id for the document's it matches (only the relative
doc offset into the segment)
If using caches in your scorer that are based on the "entire" index (all
segments), there is now no way to index into them properly from inside a Scorer
because the scorer is not passed the needed offset to calculate the "real" docid
suggest having Weight.scorer() method also take a integer for the doc offset
Abstract Weight class should have a constructor that takes this offset as well
as a method to get the offset
All Weights that have "sub" weights must pass this offset down to created "sub"
weights
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