Port 3.x getUnvaluedDocs to trunk
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Key: LUCENE-3443
URL: https://issues.apache.org/jira/browse/LUCENE-3443
Project: Lucene - Java
Issue Type: Improvement
Components: core/search
Reporter: Michael McCandless
Fix For: 3.5, 4.0
[Spinoff from LUCENE-3390]
I think the approach in 3.x for handling un-valued docs, and making it
possible to specify how such docs are sorted, is better than the
solution we have in trunk.
I like that FC has a dedicated method to get the Bits for un-valued
docs -- easy for apps to directly use. And I like that the un-valued
bits have their own entry in the FC.
One downside is that it's 2 passes to get values and missing bits, but
I think we can fix this by passing optional bool to FC.getXXX methods
indicating you want the bits, and the populate the FC entry for the
missing bits as well. (We can do that for 3.x and trunk). Then it's
single pass.
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