Details
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Bug
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Status: Closed
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Major
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Resolution: Fixed
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None
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None
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None
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Operating System: All
Platform: PC
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23307
Description
I've written an analyzer that can output several tokens when just one is input.
Say : "language" is analyzed as "C", "C++", "Java".
As stated by the docs, the first token (i.e. "C") is given a PositionIncrement
of 1 while the other ones have a PositionIncrement of 0. All share the same
positions as well.
When parsed by the QueryParser, the query :
language
...is interpreted as the PhraseQuery :
C C++ Java
...which is obviously not what I want.
I think the condition that triggers a PhraseQuery (vector's size > 1) is
over-simplistic. My tokens should feed a BooleanQuery with 3 clauses :
C || C++ || Java
However, if I input a 2 tokens query, I surely want (at least) a PhraseQuery.
Say now that "OS" is analyzed as "Windows", "Unix", "MacOS" (with
PositionIncrements set to 1-0-0 and same positions).
The query "language OS" should be parsed as :
"C Windows" || "C++ Windows" || "Java Windows" || C Unix" || "C++ Unix"
| "Java Unix" | "C MacOS" | "C++ MacOS" | "Java MacOS". |
|---|
Well... there may be a better optimization for that but in any case, I think
that QueryParser.getFieldQuery(String field, Analyzer analyzer, String
queryText) can not afford to lose the Tokens.getPositionIncrement as it
acutally does.
p.b.