Drizzled Public API Documentation

name_resolution_context.h
00001 /* -*- mode: c++; c-basic-offset: 2; indent-tabs-mode: nil; -*-
00002  *  vim:expandtab:shiftwidth=2:tabstop=2:smarttab:
00003  *
00004  *  Copyright (C) 2008 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; version 2 of the License.
00009  *
00010  *  This program is distributed in the hope that it will be useful,
00011  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
00012  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
00013  *  GNU General Public License for more details.
00014  *
00015  *  You should have received a copy of the GNU General Public License
00016  *  along with this program; if not, write to the Free Software
00017  *  Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
00018  */
00019 
00020 #pragma once
00021 
00022 #include <drizzled/item.h>
00023 
00024 namespace drizzled
00025 {
00026 
00027 class TableList;
00028 class SecurityContext;
00029 class Session;
00030 class Select_Lex;
00031 
00049 class Name_resolution_context: public memory::SqlAlloc
00050 {
00051 public:
00056   Name_resolution_context *outer_context;
00057 
00066   TableList *table_list;
00074   TableList *first_name_resolution_table;
00079   TableList *last_name_resolution_table;
00080 
00086   Select_Lex *select_lex;
00087 
00093   void (*error_processor)(Session *, void *);
00094   void *error_processor_data;
00095 
00101   bool resolve_in_select_list;
00102 
00107   SecurityContext *security_ctx;
00108 
00109   Name_resolution_context()
00110     :
00111       outer_context(0), 
00112       table_list(0), 
00113       select_lex(0),
00114       error_processor_data(0),
00115       security_ctx(0)
00116     {}
00117 
00118   inline void init()
00119   {
00120     resolve_in_select_list= false;
00121     error_processor= &dummy_error_processor;
00122     first_name_resolution_table= NULL;
00123     last_name_resolution_table= NULL;
00124   }
00125 
00126   inline void resolve_in_table_list_only(TableList *tables)
00127   {
00128     table_list= first_name_resolution_table= tables;
00129     resolve_in_select_list= false;
00130   }
00131 
00132   inline void process_error(Session *session)
00133   {
00134     (*error_processor)(session, error_processor_data);
00135   }
00136 };
00137 
00138 } /* namespace drizzled */
00139