Hi Cristina,
You can achieve this by modifying the IndexSearcher to take the query
String as an argument and then use
org.apache.lucene.queryParser.QueryParser's parse(String ) method to
parse the query string. The modified method in IndexSearcher would
look as below:
public Hits search(String queryString, int numHits,
String dedupField, String sortField, boolean
reverse) throws IOException {
org.apache.lucene.queryParser.QueryParser parser = new
org.apache.lucene.queryParser.QueryParser("content", new
org.apache.lucene.analysis.standard.StandardAnalyzer());
org.apache.lucene.search.Query luceneQuery = parser.parse(queryString);
return translateHits
(optimizer.optimize(luceneQuery, luceneSearcher, numHits,
sortField, reverse),
dedupField, sortField);
}
For this you have to modify the code in search.jsp and NutchBean too,
so that you are passing on the raw query string to IndexSearcher.
Note that with this approach, you are limiting the search to the content field.
- Ravi Chintakunta
On 10/4/06, Cristina Belderrain <[EMAIL PROTECTED]> wrote:
> Hello,
>
> we all know that Lucene supports, among others, boolean queries. Even
> though Nutch is built on Lucene, boolean clauses are removed by Nutch
> filters so boolean queries end up as "flat" queries where terms are
> implicitly connected by an OR operator, as far as I can see.
>
> Is there any simple way to turn off the filtering so a boolean query
> remains as such after it is submitted to Nutch?
>
> Just in case a simple way doesn't exist, Ravi Chintakunta suggests the
> following workaround:
>
> "We have to modify the analyzer and add more plugins to Nutch
> to use the Lucene's query syntax. Or we have to directly use
> Lucene's Query Parser. I tried the second approach by modifying
> org.apache.nutch.searcher.IndexSearcher and that seems to work."
>
> Can anyone please elaborate on what Ravi actually means by "modifying
> org.apache.nutch.searcher.IndexSearcher"? Which methods are supposed
> to be modified and how?
>
> It would be really nice to know how to do this. I believe many other
> Nutch users would also benefit from an answer to this question.
>
> Thanks so much,
>
> Cristina
>
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