Position based TermVectorMapper
-------------------------------
Key: LUCENE-975
URL: https://issues.apache.org/jira/browse/LUCENE-975
Project: Lucene - Java
Issue Type: New Feature
Components: Store
Reporter: Grant Ingersoll
Assignee: Grant Ingersoll
Priority: Minor
As part of the new TermVectorMapper approach to TermVectors, the ensuing patch
loads term vectors and stores the term info by position. This should let
people directly index into a term vector given a position. Actually, it does
it through Maps, b/c the array based bookkeeping is a pain given the way
positions are stored.
The map looks like:
Map<String, Map<Integer, TVPositionInfo>>
where the String is the field name, the integer is the position, and
TVPositionInfo is a storage mechanism for the terms and offsets that occur at a
position. It _should_ handle multiple terms per position (which is always my
downfall! )
I have not tested performance of this approach.
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