00001 /* multi_termlist.h: C++ class declaration for multiple database access 00002 * 00003 * Copyright 1999,2000,2001 BrightStation PLC 00004 * Copyright 2002,2003,2004,2005,2006,2007 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 00019 * USA 00020 */ 00021 00022 #ifndef OM_HGUARD_MULTI_TERMLIST_H 00023 #define OM_HGUARD_MULTI_TERMLIST_H 00024 00025 #include "termlist.h" 00026 #include "database.h" 00027 00028 class MultiTermList : public TermList { 00029 friend class Xapian::Database; 00030 private: 00031 TermList *tl; 00032 const Xapian::Database & db; 00033 size_t db_index; 00034 double termfreq_factor; 00035 00036 MultiTermList(TermList * tl_, 00037 const Xapian::Database &db_, 00038 size_t db_index_); 00039 public: 00040 Xapian::termcount get_approx_size() const; 00041 00043 void accumulate_stats(Xapian::Internal::ExpandStats & stats) const; 00044 00045 string get_termname() const; 00046 Xapian::termcount get_wdf() const; // Number of occurrences of term in current doc 00047 Xapian::doccount get_termfreq() const; // Number of docs indexed by term 00048 TermList * next(); 00049 bool at_end() const; 00050 00051 Xapian::termpos positionlist_count() const; 00052 00053 Xapian::PositionIterator positionlist_begin() const; 00054 00055 ~MultiTermList(); 00056 }; 00057 00058 #endif /* OM_HGUARD_MULTI_TERMLIST_H */