/** @file
 * @brief BackendManager subclass for inmemory databases.
 */
/* Copyright (C) 2007,2009,2018 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, see
 * <https://www.gnu.org/licenses/>.
 */

#ifndef XAPIAN_INCLUDED_BACKENDMANAGER_INMEMORY_H
#define XAPIAN_INCLUDED_BACKENDMANAGER_INMEMORY_H

#include "backendmanager.h"

#include <string>

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

/// BackendManager subclass for inmemory databases.
class BackendManagerInMemory : public BackendManager {
    /// Don't allow assignment.
    void operator=(const BackendManagerInMemory &);

    /// Don't allow copying.
    BackendManagerInMemory(const BackendManagerInMemory &);

  protected:
    /// Create a InMemory Xapian::Database object indexing multiple files.
    Xapian::Database do_get_database(const std::vector<std::string> & files);

  public:
    explicit
    BackendManagerInMemory(const std::string& datadir_)
	: BackendManager(datadir_, "inmemory") {}

    /// Create a InMemory Xapian::WritableDatabase object indexing a single file.
    Xapian::WritableDatabase get_writable_database(const std::string & name, const std::string & file);

    /// Get the path to use for generating a database, if supported.
    std::string get_generated_database_path(const std::string & name);
};

#endif // XAPIAN_INCLUDED_BACKENDMANAGER_INMEMORY_H
