Drizzled Public API Documentation

update.cc

00001 /* -*- mode: c++; c-basic-offset: 2; indent-tabs-mode: nil; -*-
00002  *  vim:expandtab:shiftwidth=2:tabstop=2:smarttab:
00003  *
00004  *  Copyright (C) 2009 Sun Microsystems, Inc.
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 #include <config.h>
00022 #include <drizzled/show.h>
00023 #include <drizzled/session.h>
00024 #include <drizzled/statement/update.h>
00025 
00026 namespace drizzled
00027 {
00028 
00029 bool statement::Update::execute()
00030 {
00031   TableList *first_table= (TableList *) lex().select_lex.table_list.first;
00032   TableList *all_tables= lex().query_tables;
00033   assert(first_table == all_tables && first_table != 0);
00034   Select_Lex *select_lex= &lex().select_lex;
00035   Select_Lex_Unit *unit= &lex().unit;
00036   if (update_precheck(&session(), all_tables))
00037   {
00038     return true;
00039   }
00040   assert(select_lex->offset_limit == 0);
00041   unit->set_limit(select_lex);
00042   bool res= update_query(&session(), 
00043                          all_tables,
00044                          select_lex->item_list,
00045                          lex().value_list,
00046                          select_lex->where,
00047                          select_lex->order_list.elements,
00048                          (Order *) select_lex->order_list.first,
00049                          unit->select_limit_cnt,
00050                          lex().duplicates, 
00051                          lex().ignore);
00052   return res;
00053 }
00054 
00055 } /* namespace drizzled */
00056