backends/flint/flint_modifiedpostlist.h

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00001 
00004 /* Copyright (C) 2006,2007 Olly Betts
00005  *
00006  * This program is free software; you can redistribute it and/or modify
00007  * it under the terms of the GNU General Public License as published by
00008  * the Free Software Foundation; either version 2 of the License, or
00009  * (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_FLINT_MODIFIEDPOSTLIST_H
00022 #define XAPIAN_INCLUDED_FLINT_MODIFIEDPOSTLIST_H
00023 
00024 #include <map>
00025 #include <string>
00026 
00027 using namespace std;
00028 
00029 #include "flint_postlist.h"
00030 
00031 class FlintModifiedPostList : public FlintPostList {
00033 
00034     map<Xapian::docid, pair<char, Xapian::termcount> > mods;
00035     map<Xapian::docid, pair<char, Xapian::termcount> >::const_iterator it;
00037 
00039     PositionList * poslist;
00040 
00042     void skip_deletes(Xapian::weight w_min);
00043 
00044   public:
00046     FlintModifiedPostList(Xapian::Internal::RefCntPtr<const FlintDatabase> this_db_,
00047                           const string & tname_,
00048                           const map<Xapian::docid, pair<char, Xapian::termcount> > & mods_)
00049         : FlintPostList(this_db_, tname_),
00050           mods(mods_), it(mods.begin()), poslist(0)
00051     { }
00052 
00053     ~FlintModifiedPostList();
00054 
00055     Xapian::doccount get_termfreq() const;
00056 
00057     Xapian::docid get_docid() const;
00058 
00059     Xapian::doclength get_doclength() const;
00060 
00061     Xapian::termcount get_wdf() const;
00062 
00063     PositionList *read_position_list();
00064 
00065     PositionList *open_position_list() const;
00066 
00067     PostList * next(Xapian::weight w_min);
00068 
00069     PostList * skip_to(Xapian::docid desired_did, Xapian::weight w_min);
00070 
00071     bool at_end() const;
00072 
00073     std::string get_description() const;
00074 };
00075 
00076 #endif // XAPIAN_INCLUDED_FLINT_MODIFIEDPOSTLIST_H

Documentation for Xapian (version 1.0.10).
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