/* Copyright (C) 2004 J.F.Dockes
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the
* Free Software Foundation, Inc.,
* 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
#ifndef _STEMDB_H_INCLUDED_
#define _STEMDB_H_INCLUDED_
/// Stem database code
///
/// Stem databases list stems and the set of index terms they expand to. They
/// are computed from index data by stemming each term and regrouping those
/// that stem to the same value.
/// Stem databases are stored as separate xapian databases (used as an
/// Isam method), in subdirectories of the index.
#include <vector>
#include <string>
#include <xapian.h>
namespace Rcl {
namespace StemDb {
/// Get languages of existing stem databases
extern std::vector<std::string> getLangs(const std::string& dbdir);
/// Delete stem database for given language
extern bool deleteDb(const std::string& dbdir, const std::string& lang);
/// Create stem database for given language
extern bool createDb(Xapian::Database& xdb,
const std::string& dbdir, const std::string& lang);
/// Expand term to stem siblings
extern bool stemExpand(const std::string& dbdir,
const std::string& langs,
const std::string& term,
std::vector<std::string>& result);
}
}
#endif /* _STEMDB_H_INCLUDED_ */