Without a thorough investigation, it looks like an analyzer
misunderstanding. The simpleanalyzer used a lowercase filter. So your
tokenised term is being added as lowercase value which doesn't match
the 'Value' string you are searching for
As a general rule, always use the same analyzer on the indexing side
of things as the querying side else you'll get unexpected results.
Hope that helps
Ben
Sent from my iPhone
On 19/11/2009, at 4:04 AM, Henning Meyer <tutm...@gmail.com> wrote:
> I'm a newbie to CLucene and using CLucene from git (checkout
> 48f7a9017606b85b2ee9b96b04c0720d2ea91e54).
> I may not understood it correctly but my WildcardQueries seem not to
> work as expected when turning on Tokenization with SimpleAnalyzer.
> To demonstrate the behaviour I attached this small program:
>
> #include <iostream>
> #include <string>
> #include "CLucene.h"
>
> using namespace lucene::analysis;
> using namespace lucene::index;
> using namespace lucene::document;
> using namespace lucene::search;
>
> int main(void) {
> SimpleAnalyzer a;
> IndexWriter w(".",&a,true);
> Document *d1 = new Document;
> Document *d2 = new Document;
> Field f1( L"name1", L"Value", Field::INDEX_TOKENIZED );
> Field f2( L"name2", L"Value", Field::INDEX_UNTOKENIZED);
> d1->add( f1 );
> d2->add( f2 );
> w.addDocument( d1 );
> w.addDocument( d2 );
> w.flush();
> IndexSearcher s( w.getDirectory() );
> WildcardQuery q1( new Term(L"name1", L"Value*"));
> Hits *h1 = s.search(&q1);
> std::cout << h1->length() << std::endl;
> delete h1;
> WildcardQuery q2( new Term(L"name2", L"Value*"));
> Hits *h2 = s.search(&q2);
> std::cout << h2->length() << std::endl;
> delete h2;
> }
>
> compile:
> g++ -c -o ltest.o ltest.cc
> cc -lclucene-core ltest.o -o ltest
>
> run:
> ./ltest
>
> Output should be:
> 1
> 1
> But: Output actually is:
> 0
> 1
>
> Any Idea why the first Query is not able to find name1:Value?
>
> Thanks a lot!
>
> Henning
>
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