backends/multi/multi_termlist.h

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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 */

Documentation for Xapian (version 1.0.10).
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