Lucene problem...

[ankur rathi]

Hi,

I am using lucene for text search. I am facing one problem. Please help me in this query:

I want to get name of persons who work for IBM and Oracle or IBM and Infosys. In other words, the person must work for IBM and Oracle/Infosys. I don't want to write logic for this, I am looking for just 1/2 line query like IBM AND Oracle OR IBM AND Infosys. but this is not working.

The code is as follows:

 
 
 
import java.io.IOException;
 
import org.apache.lucene.analysis.standard.StandardAnalyzer;
import org.apache.lucene.document.Document;
import org.apache.lucene.document.Field;
import org.apache.lucene.index.IndexWriter;
import org.apache.lucene.queryParser.ParseException;
import org.apache.lucene.queryParser.QueryParser;
import org.apache.lucene.search.Hits;
import org.apache.lucene.search.IndexSearcher;
import org.apache.lucene.search.Query;
import org.apache.lucene.search.Searcher;
import org.apache.lucene.store.RAMDirectory;
 
public class LuceneTest {
 
RAMDirectory ram = null;
 
public static void main(String[] args) throws IOException, ParseException {
 
LuceneTest lt = new LuceneTest();
lt.buildIndexWriter();
String s = "IBM AND Oracle OR IBM AND Infosys";
lt.search(s);
 
}
 
private void buildIndexWriter() throws IOException {
 
Document doc1 = new Document();
doc1.add(Field.Text("name", "santa singh"));
doc1.add(
Field.Text(
"company_name",
"IBM syntel TCS Infosys"));
 
Document doc2 = new Document();
doc2.add(Field.Text("name", "banta singh"));
doc2.add(
Field.Text(
"company_name",
"Oracle IBM CSC PCS"));
 
Document doc3 = new Document();
doc3.add(Field.Text("name", "hanta singh"));
doc3.add(
Field.Text("company_name", "Oracle CSC Infosys"));
 
ram = new RAMDirectory();
IndexWriter iw = new IndexWriter(ram, new StandardAnalyzer(), true);
iw.addDocument(doc1);
iw.addDocument(doc2);
iw.addDocument(doc3);
iw.optimize();
iw.close();
}
 
private void search(String keyword) throws IOException, ParseException {
 
Searcher searcher = new IndexSearcher(ram);
QueryParser qp =
new QueryParser("company_name", new StandardAnalyzer());
 
Query q = qp.parse(keyword);
 
Hits hits = searcher.search(q);
Document doc = null;
for (int i = 0; i < hits.length(); i++) {
doc = hits.doc(i);
System.out.println("NAME : " + doc.get("name"));
System.out.println("COMPANY NAME : " + doc.get("company_name"));
}
}
}
 
 

Thanks.
[ August 08, 2005: Message edited by: rathi ji ]

[Stan James]

The Lucene Query Syntax allows parens for grouping. Would one of these work?

(IBM AND Oracle) OR (IBM AND Infosys)
IBM AND ( Oracle OR Infosys )

[ankur rathi]

Thank you very much Stan. .