Drizzled Public API Documentation

all_tables.h
00001 /* -*- mode: c++; c-basic-offset: 2; indent-tabs-mode: nil; -*-
00002  *  vim:expandtab:shiftwidth=2:tabstop=2:smarttab:
00003  *
00004  *  Copyright (C) 2010 Brian Aker
00005  *
00006  *  This program is free software; you can redistribute it and/or modify
00007  *  it under the terms of the GNU General Public License as published by
00008  *  the Free Software Foundation; either version 2 of the License, or
00009  *  (at your option) any later version.
00010  *
00011  *  This program is distributed in the hope that it will be useful,
00012  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
00013  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
00014  *  GNU General Public License for more details.
00015  *
00016  *  You should have received a copy of the GNU General Public License
00017  *  along with this program; if not, write to the Free Software
00018  *  Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
00019  */
00020 
00021 #pragma once
00022 
00023 #include <drizzled/plugin/storage_engine.h>
00024 
00025 namespace drizzled {
00026 namespace generator {
00027 
00028 class AllTables
00029 {
00030   Session &session;
00031 
00032   identifier::Table::vector table_names;
00033   identifier::Table::vector::const_iterator table_iterator;
00034 
00035   drizzled::generator::Schema schema_generator;
00036   const drizzled::identifier::Schema *schema_ptr;
00037 
00038   bool table_setup();
00039 
00040 public:
00041 
00042   AllTables(Session &arg);
00043 
00044   void reset();
00045 
00046   operator const drizzled::message::table::shared_ptr()
00047   {
00048     do {
00049       while (table_iterator != table_names.end())
00050       {
00051         message::table::shared_ptr table;
00052         table= plugin::StorageEngine::getTableMessage(session, *table_iterator);
00053         table_iterator++;
00054 
00055         if (table)
00056           return table;
00057       }
00058     } while ((schema_ptr= schema_generator) && table_setup());
00059 
00060     return message::table::shared_ptr();
00061   }
00062 
00063   operator const drizzled::identifier::Table*()
00064   {
00065     do {
00066       while (table_iterator != table_names.end())
00067       {
00068         const drizzled::identifier::Table *_ptr= &(*table_iterator);
00069         table_iterator++;
00070 
00071         return _ptr;
00072       }
00073     } while ((schema_ptr= schema_generator) && table_setup());
00074 
00075     return NULL;
00076   }
00077 };
00078 
00079 } /* namespace generator */
00080 } /* namespace drizzled */
00081