stream_storage_dir.hpp

См. документацию.

/*

Copyright (c) 2002-2005, Yauheni Akhotnikau
All rights reserved.

Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are met:

- Redistributions of source code must retain the above copyright notice, this
list of conditions and the following disclaimer.

- Redistributions in binary form must reproduce the above copyright notice, this
list of conditions and the following disclaimer in the documentation and/or
other materials provided with the distribution.

- The name of the author may not be used to endorse or promote products derived
from this software without specific prior written permission.

THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT
OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY
OF SUCH DAMAGE.

*/

#if !defined( _OESS_1__DB__STORAGE__IMPL__STREAM_STORAGE_DIR_HPP_ )
#define _OESS_1__DB__STORAGE__IMPL__STREAM_STORAGE_DIR_HPP_

#include <map>
#include <set>

#include <oess_1/defs/h/types.hpp>

#include <oess_1/stdsn/h/serializable.hpp>
#include <oess_1/stdsn/h/macro.hpp>

#include <oess_1/db/storage/h/chain_id.hpp>

namespace oess_1 {

namespace db {

namespace storage {

namespace impl {

//
// stream_storage_dir_item_t
//

class stream_storage_dir_item_t
  : public oess_1::stdsn::serializable_t
  {
    typedef oess_1::stdsn::serializable_t base_type_t;
    OESS_SERIALIZER( stream_storage_dir_item_t )

  public :
    stream_storage_dir_item_t();
    stream_storage_dir_item_t(
      const oess_1::uint_t & id,
      const chain_id_t & description_chain );
    stream_storage_dir_item_t(
      const stream_storage_dir_item_t & o );
    virtual ~stream_storage_dir_item_t();

    stream_storage_dir_item_t &
    operator=(
      const stream_storage_dir_item_t & o );

    oess_1::uint_t
    id() const;

    const chain_id_t &
    description_chain() const;

  private :
    oess_1::uint_t  m_id;
    chain_id_t m_description_chain;
  };

//
// stream_storage_dir_t
//

class stream_storage_dir_t
  : public oess_1::stdsn::serializable_t
  {
    typedef oess_1::stdsn::serializable_t base_type_t;
    OESS_SERIALIZER( stream_storage_dir_t )

  public :
    stream_storage_dir_t();
    stream_storage_dir_t(
      const stream_storage_dir_t & o );
    virtual ~stream_storage_dir_t();

    stream_storage_dir_t &
    operator=(
      const stream_storage_dir_t & o );

    oess_1::uint_t
    allocate_id();


    void
    add(
      const std::string & name,
      const oess_1::uint_t & id,
      const chain_id_t & description_chain );


    void
    destroy(
      const std::string & name );


    oess_1::uint_t
    find_id(
      const std::string & name ) const;


    bool
    is_exists(
      const std::string & name ) const;

    std::set< std::string >
    names() const;


    const stream_storage_dir_item_t &
    item(
      const std::string & name ) const;

  private :
    typedef std::map< std::string,
            stream_storage_dir_item_t >
        dir_t;

    dir_t m_dir;


    oess_1::uint_t  m_id;

    dir_t::iterator
    locate_existent_item(
      const std::string & name );
    dir_t::const_iterator
    locate_existent_item(
      const std::string & name ) const;
  };

} /* namespace impl */

} /* namespace storage */

} /* namespace db */

} /* namespace oess_1 */

#endif

---