backends/quartz/quartz_alltermslist.h

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/* quartz_alltermslist.h
 *
 * ----START-LICENCE----
 * Copyright 1999,2000,2001 BrightStation PLC
 * Copyright 2002,2003,2004 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307
 * USA
 * -----END-LICENCE-----
 */

#ifndef OM_HGUARD_QUARTZ_ALLTERMSLIST_H
#define OM_HGUARD_QUARTZ_ALLTERMSLIST_H

#include "alltermslist.h"
#include "quartz_database.h"

class Bcursor;

class QuartzAllTermsList : public AllTermsList
{
    private:
        QuartzAllTermsList(const QuartzAllTermsList &);

        void operator=(const QuartzAllTermsList &);

        Xapian::Internal::RefCntPtr<const Xapian::Database::Internal> database;

        AutoPtr<Bcursor> pl_cursor;

        bool is_at_end;

        quartz_tablesize_t size;

        bool started;

        string current_term;

        string prefix;

        mutable bool have_stats;
        mutable Xapian::termcount termfreq;
        mutable Xapian::termcount collection_freq;

        void get_stats() const;
    public:
        QuartzAllTermsList(Xapian::Internal::RefCntPtr<const Xapian::Database::Internal> database_,
                           AutoPtr<Bcursor> pl_cursor_,
                           quartz_tablesize_t size_,
                           const string & prefix_);

        ~QuartzAllTermsList();

        // Gets current termname
        string get_termname() const;

        // Get num of docs indexed by term
        Xapian::doccount get_termfreq() const;

        // Get num of docs indexed by term
        Xapian::termcount get_collection_freq() const;

        TermList * skip_to(const string &tname);

        TermList * next();

        // True if we're off the end of the list
        bool at_end() const;
};

#endif /* OM_HGUARD_QUARTZ_ALLTERMSLIST_H */

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