Michael McCandless wrote:
On the indexing side you do this:
doc.add(new NumericField("price").setDoubleValue(19.99));
The NumericField is not stored by default (there's also a ctor to
specify Store.YES or Store.NO).
If the numeric field is not being used in a range query, how is it
being used? EG for sorting, it will just work. If you did store the
field, when you retrieve it, it will come back as a normal field with
a String value (equal to the .toString of original numeric value).
(You can play with precisionStep, to trade off disk space &
performance; especially if you will do range querying and eg only
sorting, you should set precisionStep=Integer.MAX_VALUE; but these are
advanced optimizations).
Mike
Hmm, Im being dense here but even a simple non range search doesn't seem
to work when using Numeric Fields, in the test below it matches 789 okay
but not 123
Paul
package org.musicbrainz.search.analysis;
import junit.framework.TestCase;
import org.apache.lucene.analysis.Analyzer;
import org.apache.lucene.analysis.standard.StandardAnalyzer;
import org.apache.lucene.store.RAMDirectory;
import org.apache.lucene.index.IndexWriter;
import org.apache.lucene.document.Document;
import org.apache.lucene.document.NumericField;
import org.apache.lucene.document.Field;
import org.apache.lucene.search.IndexSearcher;
import org.apache.lucene.search.Query;
import org.apache.lucene.queryParser.QueryParser;
public class NumericFieldTest extends TestCase {
public void testNumericFields() throws Exception {
Analyzer analyzer = new StandardAnalyzer();
RAMDirectory dir = new RAMDirectory();
IndexWriter writer = new IndexWriter(dir, analyzer, true,
IndexWriter.MaxFieldLength.LIMITED);
Document doc = new Document();
NumericField nf = new NumericField("dur");
nf.setIntValue(123);
doc.add(nf);
doc.add(new Field("dur", "789",
Field.Store.NO,Field.Index.ANALYZED ));
writer.addDocument(doc);
writer.close();
IndexSearcher searcher = new IndexSearcher(dir,true);
{
Query q = new QueryParser("dur",analyzer).parse("789");
assertEquals(1, searcher.search(q,10).totalHits);
q = new QueryParser("dur",analyzer).parse("123");
assertEquals(1, searcher.search(q,10).totalHits);
}
}
}
---------------------------------------------------------------------
To unsubscribe, e-mail: java-user-unsubscr...@lucene.apache.org
For additional commands, e-mail: java-user-h...@lucene.apache.org
