Re: Case-sensitive search

[Erik Hatcher]

On Aug 18, 2005, at 4:16 PM, [EMAIL PROTECTED] wrote:
Thanks! I have used StopAnalyzer to index. Does it lower-case before
indexing? I don't touch the query string before sending for  
searching, so
the query string is not lower-cases.

Pretty much all built-in Lucene analyzers lower-case:

    http://svn.apache.org/repos/asf/lucene/java/trunk/src/java/org/ 
apache/lucene/analysis/StopAnalyzer.java
(scroll to the bottom to see the tokenStream method - the heart of an  
analyzer)

The exception is the WhitespaceAnalyzer, which is probably not what  
you want to use.  You can write your own Analyzer (copy/paste one and  
remove the lowercasing filter - though some analyzers use a  
lowercasing tokenizer, not a filter).

    Erik





The search really is case sensitive, it's just that all input is
usually lower-cased, so it feels like it's case insensitive.  In  
other
words, don't lower-case your input before indexing, and don't
lower-case your queries (i.e. pick an Analyzer that doesn't
lower-case).

Otis


--- [EMAIL PROTECTED] wrote:


Is there any way to do a case-sensitive search?

Thanks
Tareque
ControlDOCS


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