transaction.hh

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/*
* This file is part of rasdaman community.
*
* Rasdaman community 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 3 of the License, or
* (at your option) any later version.
*
* Rasdaman community 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 rasdaman community.  If not, see <http://www.gnu.org/licenses/>.
*
* Copyright 2003, 2004, 2005, 2006, 2007, 2008, 2009 Peter Baumann /
rasdaman GmbH.
*
* For more information please see <http://www.rasdaman.org>
* or contact Peter Baumann via <baumann@rasdaman.com>.
*/
 
//@ManMemo: Module: {\bf rasodmg}
 
#ifndef D_TRANSACTION_HH
#define D_TRANSACTION_HH
 
#include "rasodmg/set.hh"
#include "rasodmg/object.hh"
#include "rasodmg/genreftype.hh"
 
class r_OId;
class r_Database;
class r_Ref_Any;
template <typename T>
class r_Ref;
 
class r_Transaction
{
public:
    enum r_TAStatus
    {
        active,
        inactive,
        comiting,
        aborting
    };
 
    enum r_TAMode
    {
        read_write,
        read_only
    };
 
    r_Transaction(r_Database *db = NULL);
 
    ~r_Transaction();
 
    void begin(r_TAMode mode = read_write);
    void commit();
    void abort();
 
    r_TAStatus get_status() const;
 
    r_TAMode get_mode() const;
 
    //@Man: Methods and types for internal use only:
 
 
    static r_Transaction *actual_transaction;
 
    r_Ref_Any load_object(const r_OId &oid);
 
    void add_object_list(GenRefType type, void *ref);
 
    void setDatabase(r_Database *database);
 
    r_Database *getDatabase();
 
 
 
private:
    void add_object_list(const r_Ref<r_Object> &);
 
    r_TAStatus ta_state;
 
    r_TAMode ta_mode;
 
    r_Set<r_Ref<r_Object>> object_list;
 
    r_Set<GenRefElement *> non_object_list;
 
    friend class r_Object;
 
    r_Database *database;
};
 
#endif