driver_mgr.hpp

ncbi源码

/*
 * ===========================================================================
 * PRODUCTION $Log: driver_mgr.hpp,v $
 * PRODUCTION Revision 1000.3  2004/06/01 19:17:54  gouriano
 * PRODUCTION PRODUCTION: UPGRADED [GCC34_MSVC7] Dev-tree R1.7
 * PRODUCTION
 * ===========================================================================
 */

#ifndef DBAPI___DRIVER_MGR__HPP
#define DBAPI___DRIVER_MGR__HPP

/* $Id: driver_mgr.hpp,v 1000.3 2004/06/01 19:17:54 gouriano Exp $
 * ===========================================================================
 *
 *                            PUBLIC DOMAIN NOTICE
 *               National Center for Biotechnology Information
 *
 *  This software/database is a "United States Government Work" under the
 *  terms of the United States Copyright Act.  It was written as part of
 *  the author's official duties as a United States Government employee and
 *  thus cannot be copyrighted.  This software/database is freely available
 *  to the public for use. The National Library of Medicine and the U.S.
 *  Government have not placed any restriction on its use or reproduction.
 *
 *  Although all reasonable efforts have been taken to ensure the accuracy
 *  and reliability of the software and data, the NLM and the U.S.
 *  Government do not and cannot warrant the performance or results that
 *  may be obtained by using this software or data. The NLM and the U.S.
 *  Government disclaim all warranties, express or implied, including
 *  warranties of performance, merchantability or fitness for any particular
 *  purpose.
 *
 *  Please cite the author in any work or product based on this material.
 *
 * ===========================================================================
 *
 * Author:  Michael Kholodov, Denis Vakatov
 *   
 * File Description:  Driver Manager definition
 *
 */

#include <corelib/ncbistd.hpp>
#include <corelib/ncbireg.hpp>
#include <dbapi/driver/driver_mgr.hpp>
#include <map>


/** @addtogroup DbDrvMgr
 *
 * @{
 */


BEGIN_NCBI_SCOPE


/////////////////////////////////////////////////////////////////////////////
//
//  CDriverManager::
//
//  Static class for registering drivers and getting the datasource
//

class NCBI_DBAPI_EXPORT CDriverManager : public C_DriverMgr
{
public:
    // Get a single instance of CDriverManager
    static CDriverManager& GetInstance();

    // Remove instance of CDriverManager
    static void RemoveInstance();

    // Create datasource object
    class IDataSource* CreateDs(const string& driver_name,
				map<string, string> *attr = 0);

    class IDataSource* CreateDsFrom(const string& drivers,
				    CNcbiRegistry* reg = 0);

    // Destroy datasource object
    void DestroyDs(const string& driver_name);

protected:
    // Prohibit explicit construction and destruction
    CDriverManager();
    virtual ~CDriverManager();

    // Put the new data source into the internal list with
    // corresponding driver name, return previous, if already exists
    class IDataSource* RegisterDs(const string& driver_name,
				  class I_DriverContext* ctx);

    map<string, class IDataSource*> m_ds_list;

private:
    static CDriverManager* sm_Instance;
    DECLARE_CLASS_STATIC_MUTEX(sm_Mutex);
};


END_NCBI_SCOPE


/* @} */


/*
 * ===========================================================================
 * $Log: driver_mgr.hpp,v $
 * Revision 1000.3  2004/06/01 19:17:54  gouriano
 * PRODUCTION: UPGRADED [GCC34_MSVC7] Dev-tree R1.7
 *
 * Revision 1.7  2004/04/22 11:28:41  ivanov
 * Use pointer to driver manager instance instead auto_ptr
 *
 * Revision 1.6  2003/12/17 14:57:00  ivanov
 * Changed type of the Driver Manager instance to auto_ptr.
 * Added RemoveInstance() method.
 *
 * Revision 1.5  2003/12/15 20:05:41  ivanov
 * Added export specifier for building DLLs in MS Windows.
 *
 * Revision 1.4  2003/04/11 17:45:57  siyan
 * Added doxygen support
 *
 * Revision 1.3  2003/02/10 17:21:09  kholodov
 * Added: DestroyDs() method
 *
 * Revision 1.2  2002/04/29 19:13:14  kholodov
 * Modified: using C_DriverMgr as parent class of CDriverManager
 *
 * Revision 1.1  2002/01/30 14:51:24  kholodov
 * User DBAPI implementation, first commit
 *
 * ===========================================================================
 */

#endif  /* DBAPI___DBAPI__HPP */