Does QueryParser Require Upper Case Operators

["T. R. Halvorson" <tr...@midrivers.com>]

Hi all. I'm new and asking a beginner's question that I have not found 
answered in the archives.

Documentation I have says the QueryParser needs the operators AND, OR, 
etc. to be in upper case. In an application under development, however, 
lower case seems to produce correct results in initial tests. I.e.,

     (oil or petroleum) and prices

is producing the same results as

    (oil OR petroleum) AND prices

T. R. Halvorson

trh@midrivers.com
www.linkedin.com/in/trhalvorson
www.ncodian.com
http://twitter.com/trhalvorson 

RE: Does QueryParser Require Upper Case Operators

[Digy <di...@gmail.com>]

No, they shouldn't be same.

See the difference:
Lucene.Net.QueryParsers.QueryParser p = new
Lucene.Net.QueryParsers.QueryParser("", new
Lucene.Net.Analysis.WhitespaceAnalyzer());
Console.WriteLine( p.Parse("(oil or petroleum) and prices").ToString() );
Console.WriteLine( p.Parse("(oil OR petroleum) AND prices").ToString() );


DIGY

-----Original Message-----
From: T. R. Halvorson [mailto:trh@midrivers.com] 
Sent: Monday, November 09, 2009 8:23 PM
To: lucene-net-user@incubator.apache.org
Subject: Does QueryParser Require Upper Case Operators

Hi all. I'm new and asking a beginner's question that I have not found 
answered in the archives.

Documentation I have says the QueryParser needs the operators AND, OR, 
etc. to be in upper case. In an application under development, however, 
lower case seems to produce correct results in initial tests. I.e.,

     (oil or petroleum) and prices

is producing the same results as

    (oil OR petroleum) AND prices

T. R. Halvorson

trh@midrivers.com
www.linkedin.com/in/trhalvorson
www.ncodian.com
http://twitter.com/trhalvorson