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From Morus Walter <morus.wal...@tanto.de>
Subject RE: Null or no analyzer
Date Wed, 20 Oct 2004 06:25:01 GMT
Aviran writes:
> You can use WhiteSpaceAnalyzer
> 
Can he? If "Elections 2004" is one token in the subject field (keyword), 
this will fail, since WhiteSpeceAnalyzer will tokenize that to `Elections' 
and `2004'.
So I guess he has to write an identity analyzer himself unless there is
one provided (which doesn't seem to be the case).
The only alternatives are not using query parser or extending query parser
for a key word syntax, as far as I can see.

Morus
> 
> -----Original Message-----
> From: Rupinder Singh Mazara [mailto:rsmazara@ebi.ac.uk] 
> Sent: Tuesday, October 19, 2004 11:23 AM
> To: Lucene Users List
> Subject: Null or no analyzer
> 
> 
> Hi All
> 
>   I have a question regarding selection of Analyzer's during query parsing
> 
> 
>   i have three field in my index db_id, full_text, subject
>   all three are indexed, however while indexing I specified to lucene to
> index db_id and subject but not tokenize them
> 
>   I want to give a single search box in my application to enable searching
> for documents
>   some query can look lile  "motor cross rally" this will get fed to
> QueryParser to do the relevent parsing
> 
>   however if the user enters  Jhon Kerry  subject:"Elections 2004" I want to
> make sure that No analyzer is used fro the subject field ? how can that be
> done.
> 
>   this is because I expect the users to know the subject from a List of
> controlled vocabularies and also I am searching for  documents that have the
> exact subject I tried using the "PerFieldAnalyzerWrapper", but how do I get
> hold a Analyzer that  does nothing but pass the text trough to the Searcher
> ?
> 

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