backends/quartz/quartz_values.h

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/* quartz_values.h: Values in quartz databases
 *
 * Copyright 1999,2000,2001 BrightStation PLC
 * Copyright 2002 Ananova Ltd
 * Copyright 2002,2003,2004,2008 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_QUARTZ_VALUES_H
#define OM_HGUARD_QUARTZ_VALUES_H

#include <map>
#include <string>

#include <xapian/types.h>
#include <xapian/valueiterator.h>
#include "btree.h"

using namespace std;

class QuartzValueTable : public Btree {
    private:
        static void unpack_entry(const char ** pos,
                                 const char * end,
                                 Xapian::valueno * this_value_no,
                                 string & this_value);

    public:
        QuartzValueTable(string path_, bool readonly_)
            : Btree(path_ + "/value_", readonly_) { }

        void encode_values(string & s,
                           Xapian::ValueIterator it,
                           const Xapian::ValueIterator & end);

        void set_encoded_values(Xapian::docid did, const string & enc);

        void get_value(string & value, Xapian::docid did,
                       Xapian::valueno valueno) const;

        void get_all_values(map<Xapian::valueno, string> & values,
                            Xapian::docid did) const;

        void delete_all_values(Xapian::docid did);
};

#endif /* OM_HGUARD_QUARTZ_VALUES_H */

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