include/xapian/sorter.h

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00001 
00004 /* Copyright (C) 2007 Olly Betts
00005  *
00006  * This program is free software; you can redistribute it and/or
00007  * modify it under the terms of the GNU General Public License as
00008  * published by the Free Software Foundation; either version 2 of the
00009  * License, or (at your option) any later version.
00010  *
00011  * This program is distributed in the hope that it will be useful,
00012  * but WITHOUT ANY WARRANTY; without even the implied warranty of
00013  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
00014  * GNU General Public License for more details.
00015  *
00016  * You should have received a copy of the GNU General Public License
00017  * along with this program; if not, write to the Free Software
00018  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301 USA
00019  */
00020 
00021 #ifndef XAPIAN_INCLUDED_SORTER_H
00022 #define XAPIAN_INCLUDED_SORTER_H
00023 
00024 #include <string>
00025 #include <vector>
00026 
00027 #include <xapian/document.h>
00028 #include <xapian/visibility.h>
00029 
00030 namespace Xapian {
00031 
00033 class XAPIAN_VISIBILITY_DEFAULT Sorter {
00034   public:
00039     virtual std::string operator()(const Xapian::Document & doc) const = 0;
00040 
00042     virtual ~Sorter();
00043 };
00044 
00051 class XAPIAN_VISIBILITY_DEFAULT MultiValueSorter : public Sorter {
00052     std::vector<std::pair<Xapian::valueno, bool> > valnos;
00053 
00054   public:
00055     MultiValueSorter() { }
00056 
00057     template <class Iterator>
00058     MultiValueSorter(Iterator begin, Iterator end) {
00059         while (begin != end) add(*begin++);
00060     }
00061 
00062     virtual std::string operator()(const Xapian::Document & doc) const;
00063 
00064     void add(Xapian::valueno valno, bool forward = true) {
00065         valnos.push_back(std::make_pair(valno, forward));
00066     }
00067 
00068     virtual ~MultiValueSorter();
00069 };
00070 
00071 }
00072 
00073 #endif // XAPIAN_INCLUDED_SORTER_H

Documentation for Xapian (version 1.0.10).
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