examples/simplesearch.cc

Go to the documentation of this file.
00001 
00006 /* Copyright (C) 2007 Olly Betts
00007  *
00008  * This program is free software; you can redistribute it and/or modify
00009  * it under the terms of the GNU General Public License as published by
00010  * the Free Software Foundation; either version 2 of the License, or
00011  * (at your option) any later version.
00012  *
00013  * This program is distributed in the hope that it will be useful,
00014  * but WITHOUT ANY WARRANTY; without even the implied warranty of
00015  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
00016  * GNU General Public License for more details.
00017  *
00018  * You should have received a copy of the GNU General Public License
00019  * along with this program; if not, write to the Free Software
00020  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301 USA
00021  */
00022 
00023 #include <xapian.h>
00024 
00025 #include <iostream>
00026 #include <string>
00027 
00028 #include <stdlib.h> // For exit().
00029 
00030 using namespace std;
00031 
00032 int
00033 main(int argc, char **argv)
00034 try {
00035     // We require at least two command line arguments.
00036     if (argc < 3) {
00037         cout << "Usage: " << argv[0] << " PATH_TO_DATABASE QUERY" << endl;
00038         exit(1);
00039     }
00040 
00041     // Open the database for searching.
00042     Xapian::Database db(argv[1]);
00043 
00044     // Start an enquire session.
00045     Xapian::Enquire enquire(db);
00046 
00047     // Combine the rest of the command line arguments with spaces between
00048     // them, so that simple queries don't have to be quoted at the shell
00049     // level.
00050     string query_string(argv[2]);
00051     argv += 3;
00052     while (*argv) {
00053         query_string += ' ';
00054         query_string += *argv++;
00055     }
00056 
00057     // Parse the query string to produce a Xapian::Query object.
00058     Xapian::QueryParser qp;
00059     Xapian::Stem stemmer("english");
00060     qp.set_stemmer(stemmer);
00061     qp.set_database(db);
00062     qp.set_stemming_strategy(Xapian::QueryParser::STEM_SOME);
00063     Xapian::Query query = qp.parse_query(query_string);
00064     cout << "Parsed query is: " << query.get_description() << endl;
00065 
00066     // Find the top 10 results for the query.
00067     enquire.set_query(query);
00068     Xapian::MSet matches = enquire.get_mset(0, 10);
00069 
00070     // Display the results.
00071     cout << matches.get_matches_estimated() << " results found.\n";
00072     cout << "Matches 1-" << matches.size() << ":\n" << endl;
00073 
00074     for (Xapian::MSetIterator i = matches.begin(); i != matches.end(); ++i) {
00075         cout << i.get_rank() + 1 << ": " << i.get_percent() << "% docid=" << *i
00076              << " [" << i.get_document().get_data() << "]\n\n";
00077     }
00078 } catch (const Xapian::Error &e) {
00079     cout << e.get_description() << endl;
00080     exit(1);
00081 }

Documentation for Xapian (version 1.0.10).
Generated on 24 Dec 2008 by Doxygen 1.5.2.