NGramTokenFilter optimization in query phase
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Key: LUCENE-1229
URL: https://issues.apache.org/jira/browse/LUCENE-1229
Project: Lucene - Java
Issue Type: Improvement
Components: contrib/*
Reporter: Hiroaki Kawai
I found that NGramTokenFilter-ed token stream could be optimized in query.
A standard 1,2 NGramTokenFilter will generate a token stream from "abcde" as
follows:
a ab b bc c cd d de e
When we index "abcde", we'll use all of the tokens.
But when we query, we only need:
ab cd de
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