inmemory_positionlist.h

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/* Copyright 1999,2000,2001 BrightStation PLC
 * Copyright 2003,2008,2009,2011 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_INMEMORY_POSITIONLIST_H
#define OM_HGUARD_INMEMORY_POSITIONLIST_H

#include <xapian/types.h>
#include <xapian/error.h>

#include <vector>
#include "backends/positionlist.h"
#include "api/documentterm.h"

using namespace std;

class InMemoryPositionList : public PositionList
{
    private:
        vector<Xapian::termpos> positions;

        vector<Xapian::termpos>::const_iterator mypos;

        bool iterating_in_progress;

        InMemoryPositionList(const InMemoryPositionList &);

        void operator=(const InMemoryPositionList &);

    public:
        InMemoryPositionList() : iterating_in_progress(false) { }

        explicit InMemoryPositionList(bool)
            : mypos(positions.begin()), iterating_in_progress(false) { }

        explicit
        InMemoryPositionList(const OmDocumentTerm::term_positions & positions_);

        void set_data(const OmDocumentTerm::term_positions & positions_);

        Xapian::termcount get_approx_size() const;

        Xapian::termpos get_position() const;

        bool next();

        bool skip_to(Xapian::termpos termpos);
};

#endif /* OM_HGUARD_INMEMORY_POSITIONLIST_H */