Alan Woodward created LUCENE-6561:
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             Summary: Add a TermContextCache to IndexSearcher
                 Key: LUCENE-6561
                 URL: https://issues.apache.org/jira/browse/LUCENE-6561
             Project: Lucene - Core
          Issue Type: Improvement
            Reporter: Alan Woodward


TermContexts can be quite expensive to build, and if you have fairly complex 
queries that re-use the same terms you can end up spending a lot of time 
re-building the same ones over and over again.  It would be nice to be able to 
cache them on an IndexSearcher, so that they can be re-used.



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