Hi Jamir,
you can easily combine Analyzers however you need it by filtering the output of
one Analyzer with another. In your case, I would just write my own Analyzer
class like this:
class LowerCaseKeywordAnalyzer extends Analyzer {
@Override
public TokenStream tokenStream(String fieldName, Reader reader) {
TokenStream tokenStream = new KeywordTokenizer(reader);
tokenStream =
new LowerCaseFilter(Version.LUCENE_34, tokenStream);
return tokenStream;
}
}
Best,
Anna
-----Ursprüngliche Nachricht-----
Von: Jamir Shaikh [mailto:shaikhja...@gmail.com]
Gesendet: Samstag, 15. Oktober 2011 02:22
An: java-user@lucene.apache.org
Betreff: Case insensitive Keyword Analyser
Hi Guys,
Use Case: Field: Name
Data: Jose ,
Jose Sam,
jose,
jose jacob,
jose ,
joseph,
josef ,
S. Jose,
B. jose
etc.
There is a field (Name), I want to index this field.
I will be searching this field for a Wildcard query
e.g. jose*
This should return all names starting with jose.
Search: Jose* (should return all names starting with jose)
Solution:
1. Using Standard analyser.
Problem with Standard Analyser:
If I use Standard Analyser in addition to correct results it returns results
like S. Jose, B. jose
which do not start with Jose.
2. Using Keyword Analyser.
Problem with Keyword Analyser:
Keyword Analyser is case sensitive so it misses names like Jose, Jose Sam,
This happens becuase a search Jose* will be changed to jose* (all small
letters)
So is there any analyser available which will take care of such use case.
What I am searching is a Case insensitive Keyword Analyser.
Or let me know if there is any other approach to handle this use case.
Thanks,
Jamir
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