Re: [CLucene-dev] Beginner not getting any hits on search

[cel t. <cel...@gm...>]

Mark

Looks like your "field config" is not correct.

In your code, you used the logical AND ( && ) -- rather than the bitwise OR
( | ):
int config = Field::STORE_YES | Field::INDEX_TOKENIZED;

>>> I can see my fields in the index file
To browse your index, you can use a wonderful tool called "Luke". To find
it, just google for: luke lucene

With Luke, I was able to see that :
-- your original code produced an 'empty' index (it had no terms);
-- with the change suggested above -- the index was populated with 3 terms
(nixon, obama, clinton); and your query returned 1 hit in Document ID 0.

Hope this helps.

Regards
Celto



On Mon, Mar 23, 2015 at 1:24 AM, Mark Wilson <mwi...@gm...> wrote:

> I'm not sure what I'm doing wrong.  I can see my fields in the index file,
> but my query/search returns no hits.
>
> Here is my index creation code:
>
> lucene::analysis::SimpleAnalyzer* analyzer;
>
> int main(int argc, char** argv)
> {
>     analyzer = new lucene::analysis::SimpleAnalyzer();
>     Directory* indexDir = FSDirectory::getDirectory("../Index");
>
>     IndexWriter* w = new IndexWriter(indexDir, analyzer, true, true);
>
>     int config = Field::STORE_YES && Field::INDEX_TOKENIZED;
>
>     Field* field;
>     Document* doc;
>
>     doc = new Document();
>
>     field = new Field(L"president", L"Nixon", config);
>     doc->clear();
>     doc->add(*field);
>     w->addDocument(doc);
>
>     field = new Field(L"president", L"Obama", config);
>     doc->clear();
>     doc->add(*field);
>     w->addDocument(doc);
>
>     field = new Field(L"president", L"Clinton", config);
>     doc->clear();
>     doc->add(*field);
>     w->addDocument(doc);
>
>     w->close();
>
>     indexDir->close();
> }
>
> Here is my query code:
>
>
> int main(int argc, char** argv)
> {
>
>     IndexReader* reader = IndexReader::open("../Index");
>
>     lucene::analysis::SimpleAnalyzer* analyzer =
>         new lucene::analysis::SimpleAnalyzer();
>
>     IndexReader* newreader = reader->reopen();
>     if ( newreader != reader )
>     {
>         _CLLDELETE(reader);
>         reader = newreader;
>     }
>     IndexSearcher searcher(reader);
>
>
>     Query* query = QueryParser::parse(L"Nixon*",
>         L"president", analyzer);
>     Hits* hits = searcher.search(query);
>     cout << "Total hits: " << hits->length() << endl;
> }
>
>
> I get no hits on this. I've tried to make my experiment as simple as
> possible, but I get nothing.  Is the query formed wrong?
>
> Thanks for any help.
>
> Regards,
> Mark
>
>
> ------------------------------------------------------------------------------
> Dive into the World of Parallel Programming The Go Parallel Website,
> sponsored
> by Intel and developed in partnership with Slashdot Media, is your hub for
> all
> things parallel software development, from weekly thought leadership blogs
> to
> news, videos, case studies, tutorials and more. Take a look and join the
> conversation now. http://goparallel.sourceforge.net/
> _______________________________________________
> CLucene-developers mailing list
> CLu...@li...
> https://lists.sourceforge.net/lists/listinfo/clucene-developers
>
>