net_termlist.h

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/* Copyright 1999,2000,2001 BrightStation PLC
 * Copyright 2003,2006,2007,2009,2010,2011 Olly Betts
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License as
 * published by the Free Software Foundation; either version 2 of the
 * License, or (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301
 * USA
 */

#ifndef OM_HGUARD_NET_TERMLIST_H
#define OM_HGUARD_NET_TERMLIST_H

#include <string>

#include <xapian/types.h>
#include <xapian/error.h>
#include "api/termlist.h"
#include "expand/expandweight.h"
#include "remote-database.h"

using namespace std;

class NetworkTermListItem {
    public:
        string tname;

        Xapian::doccount termfreq;

        Xapian::termcount wdf;
};

class NetworkTermList : public TermList {
    friend class RemoteDatabase;
    private:
        vector<NetworkTermListItem> items;

        vector<NetworkTermListItem>::const_iterator current_position;

        bool started;

        Xapian::termcount document_length;

        Xapian::doccount database_size;

        Xapian::Internal::intrusive_ptr<const RemoteDatabase> this_db;

        Xapian::docid did;

        NetworkTermList(Xapian::termcount document_length_,
                        Xapian::doccount database_size_,
                        Xapian::Internal::intrusive_ptr<const RemoteDatabase> this_db_,
                        Xapian::docid did_);
    public:

        Xapian::termcount get_approx_size() const;

        // Collate weighting information for the current term.
        void accumulate_stats(Xapian::Internal::ExpandStats &stats) const;
        string get_termname() const;
        Xapian::termcount get_wdf() const;
        Xapian::doccount get_termfreq() const;
        TermList * next();
        TermList * skip_to(const std::string &term);
        bool at_end() const;

        Xapian::termcount positionlist_count() const;
        Xapian::PositionIterator positionlist_begin() const;
};

#endif /* OM_HGUARD_NET_TERMLIST_H */