Very Nice. Thanks!
Luke
----- Original Message -----
From: "åç" <[EMAIL PROTECTED]>
To: "Lucene Users List" <lucene-user@jakarta.apache.org>
Sent: Friday, February 04, 2005 2:12 AM
Subject: Re: Parsing The Query: Every document that doesn't have a field
containing x
I think you may can use a filter to get right result!
See examlples below
package lia.advsearching;
import junit.framework.TestCase;
import org.apache.lucene.analysis.WhitespaceAnalyzer;
import org.apache.lucene.document.Document;
import org.apache.lucene.document.Field;
import org.apache.lucene.index.IndexWriter;
import org.apache.lucene.index.Term;
import org.apache.lucene.search.Hits;
import org.apache.lucene.search.IndexSearcher;
import org.apache.lucene.search.QueryFilter;
import org.apache.lucene.search.TermQuery;
import org.apache.lucene.store.RAMDirectory;
public class SecurityFilterTest extends TestCase {
private RAMDirectory directory;
protected void setUp() throws Exception {
directory = new RAMDirectory();
IndexWriter writer = new IndexWriter(directory,
new WhitespaceAnalyzer(), true);
// Elwood
Document document = new Document();
document.add(Field.Keyword("owner", "elwood"));
document.add(Field.Text("keywords", "elwoods sensitive info"));
writer.addDocument(document);
// Jake
document = new Document();
document.add(Field.Keyword("owner", "jake"));
document.add(Field.Text("keywords", "jakes sensitive info"));
writer.addDocument(document);
writer.close();
}
public void testSecurityFilter() throws Exception {
TermQuery query = new TermQuery(new Term("keywords", "info"));
IndexSearcher searcher = new IndexSearcher(directory);
Hits hits = searcher.search(query);
assertEquals("Both documents match", 2, hits.length());
QueryFilter jakeFilter = new QueryFilter(
new TermQuery(new Term("owner", "jake")));
hits = searcher.search(query, jakeFilter);
assertEquals(1, hits.length());
assertEquals("elwood is safe",
"jakes sensitive info", hits.doc(0).get("keywords"));
}
}
On Thu, 3 Feb 2005 13:04:50 -0500, Luke Shannon
<[EMAIL PROTECTED]> wrote:
> Hello;
>
> I have a query that finds document that contain fields with a specific
> value.
>
> query1 = QueryParser.parse("jpg", "kcfileupload", new StandardAnalyzer());
>
> This works well.
>
> I would like a query that find documents containing all kcfileupload
fields
> that don't contain jpg.
>
> The example I found in the book that seems to relate shows me how to find
> documents without a specific term:
>
> QueryParser parser = new QueryParser("contents", analyzer);
> parser.setOperator(QueryParser.DEFAULT_OPERATOR_AND);
>
> But than it says:
>
> Negating a term must be combined with at least one nonnegated term to
return
> documents; in other words, it isn't possible to use a query like NOT term
to
> find all documents that don't contain a term.
>
> So does that mean the above example wouldn't work?
>
> The API says:
>
> a plus (+) or a minus (-) sign, indicating that the clause is required or
> prohibited respectively;
>
> I have been playing around with using the minus character without much
luck.
>
> Can someone give point me in the right direction to figure this out?
>
> Thanks,
>
> Luke
>
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