Line data    Source code

       1             : // Copyright (c) 2019  Made to Order Software Corp.  All Rights Reserved
       2             : //
       3             : // https://snapwebsites.org/project/snapdatabase
       4             : // contact@m2osw.com
       5             : //
       6             : // This program is free software; you can redistribute it and/or modify
       7             : // it under the terms of the GNU General Public License as published by
       8             : // the Free Software Foundation; either version 2 of the License, or
       9             : // (at your option) any later version.
      10             : //
      11             : // This program is distributed in the hope that it will be useful,
      12             : // but WITHOUT ANY WARRANTY; without even the implied warranty of
      13             : // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
      14             : // GNU General Public License for more details.
      15             : //
      16             : // You should have received a copy of the GNU General Public License along
      17             : // with this program; if not, write to the Free Software Foundation, Inc.,
      18             : // 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
      19             : 
      20             : 
      21             : /** \file
      22             :  * \brief Database file implementation.
      23             :  *
      24             :  * Each table uses one or more files. Each file is handled by a dbfile
      25             :  * object and a corresponding set of blocks.
      26             :  */
      27             : 
      28             : // self
      29             : //
      30             : #include    "snapdatabase/block/block_data.h"
      31             : 
      32             : #include    "snapdatabase/block/block_header.h"
      33             : #include    "snapdatabase/database/table.h"
      34             : 
      35             : 
      36             : // last include
      37             : //
      38             : #include    <snapdev/poison.h>
      39             : 
      40             : 
      41             : 
      42             : namespace snapdatabase
      43             : {
      44             : 
      45             : 
      46             : 
      47             : namespace detail
      48             : {
      49             : }
      50             : 
      51             : 
      52             : namespace
      53             : {
      54             : 
      55             : 
      56             : // 'DATA'
      57             : constexpr struct_description_t const g_description[] =
      58             : {
      59             :     define_description(
      60             :           FieldName("header")
      61             :         , FieldType(struct_type_t::STRUCT_TYPE_STRUCTURE)
      62             :         , FieldSubDescription(detail::g_block_header)
      63             :     ),
      64             :     end_descriptions()
      65             : };
      66             : 
      67             : 
      68             : constexpr descriptions_by_version_t const g_descriptions_by_version[] =
      69             : {
      70             :     define_description_by_version(
      71             :         DescriptionVersion(0, 1),
      72             :         DescriptionDescription(g_description)
      73             :     ),
      74             :     end_descriptions_by_version()
      75             : };
      76             : 
      77             : 
      78             : }
      79             : // no name namespace
      80             : 
      81             : 
      82           0 : block_data::block_data(dbfile::pointer_t f, reference_t offset)
      83           0 :     : block(g_descriptions_by_version, f, offset)
      84             : {
      85           0 : }
      86             : 
      87             : 
      88           0 : uint32_t block_data::block_total_space(table_pointer_t t)
      89             : {
      90           0 :     return t->get_page_size() - sizeof(uint32_t);
      91             : }
      92             : 
      93             : 
      94             : 
      95             : } // namespace snapdatabase
      96             : // vim: ts=4 sw=4 et