Ticket #716: Search1.java

package org.xapian.examples;

import org.xapian.Database;
import org.xapian.Document;
import org.xapian.Enquire;
import org.xapian.MSet;
import org.xapian.MSetIterator;
import org.xapian.Query;
import org.xapian.QueryParser;
import org.xapian.Stem;

public class Search1 {

    // Command line args - dbpath querystring
    public static void main(String[] args)
    {
        if(args.length < 2)
        {
            System.out.println("Insufficient number of arguments (should be dbpath querystring)");
            return;
        }
        search(args[0], args[1]);
    }

    public static void search(String dbpath, String queryString)
    {
        search(dbpath, queryString, 0, 10);
    }

    public static void search(String dbpath, String queryString, int offset, int pagesize)
    {
        // offset - defines starting point within result set
        // pagesize - defines number of records to retrieve

        // Open the databse we're going to search.
        Database db = new Database(dbpath);

        // Set up a QueryParser with a stemmer and suitable prefixes
        QueryParser queryParser = new QueryParser();
        queryParser.setStemmer(new Stem("en"));
        queryParser.setStemmingStrategy(QueryParser.stem_strategy.STEM_SOME);
        // Start of prefix configuration.
        queryParser.addPrefix("title", "S");
        queryParser.addPrefix("description", "XD");
        // End of prefix configuration.

        // And parse the query
        Query query = queryParser.parseQuery(queryString);

        // Use an Enquire object on the database to run the query
        Enquire enquire = new Enquire(db);
        enquire.setQuery(query);

        // And print out something about each match
        MSet mset= enquire.getMSet(offset, pagesize);
        MSetIterator msetIterator = mset.begin();

        while(msetIterator.hasNext())
        {
            long rank = msetIterator.getRank();
            long docID = msetIterator.getDocId();
            Document doc = db.getDocument(docID);
            String title = doc.getValue(0);

            System.out.println((rank+1)+": #"+docID+" "+title);
            msetIterator.next();
        }

    }
}