00001 00004 /* Copyright (C) 2007,2009 Olly Betts 00005 * Copyright (C) 2009 Lemur Consulting Ltd 00006 * 00007 * This program is free software; you can redistribute it and/or 00008 * modify it under the terms of the GNU General Public License as 00009 * published by the Free Software Foundation; either version 2 of the 00010 * License, or (at your option) any later version. 00011 * 00012 * This program is distributed in the hope that it will be useful, 00013 * but WITHOUT ANY WARRANTY; without even the implied warranty of 00014 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 00015 * GNU General Public License for more details. 00016 * 00017 * You should have received a copy of the GNU General Public License 00018 * along with this program; if not, write to the Free Software 00019 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA 00020 */ 00021 00022 #ifndef XAPIAN_INCLUDED_LEAFPOSTLIST_H 00023 #define XAPIAN_INCLUDED_LEAFPOSTLIST_H 00024 00025 #include "postlist.h" 00026 00027 #include <string> 00028 00029 namespace Xapian { 00030 class Weight; 00031 } 00032 00038 class LeafPostList : public PostList { 00040 void operator=(const LeafPostList &); 00041 00043 LeafPostList(const LeafPostList &); 00044 00045 protected: 00046 const Xapian::Weight * weight; 00047 00048 bool need_doclength; 00049 00051 std::string term; 00052 00054 LeafPostList(const std::string & term_) 00055 : weight(0), need_doclength(false), term(term_) { } 00056 00057 public: 00058 ~LeafPostList(); 00059 00069 void set_termweight(const Xapian::Weight * weight_); 00070 00076 virtual Xapian::doccount get_termfreq() const = 0; 00077 00078 Xapian::doccount get_termfreq_min() const; 00079 Xapian::doccount get_termfreq_max() const; 00080 Xapian::doccount get_termfreq_est() const; 00081 00082 Xapian::weight get_maxweight() const; 00083 Xapian::weight get_weight() const; 00084 Xapian::weight recalc_maxweight(); 00085 00086 TermFreqs get_termfreq_est_using_stats( 00087 const Xapian::Weight::Internal & stats) const; 00088 00089 Xapian::termcount count_matching_subqs() const; 00090 }; 00091 00092 #endif // XAPIAN_INCLUDED_LEAFPOSTLIST_H