Drizzled Public API Documentation

select_dumpvar.cc
1 /* -*- mode: c++; c-basic-offset: 2; indent-tabs-mode: nil; -*-
2  * vim:expandtab:shiftwidth=2:tabstop=2:smarttab:
3  *
4  * Copyright (C) 2008 Sun Microsystems, Inc.
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; version 2 of the License.
9  *
10  * This program is distributed in the hope that it will be useful,
11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13  * GNU General Public License for more details.
14  *
15  * You should have received a copy of the GNU General Public License
16  * along with this program; if not, write to the Free Software
17  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
18  */
19 
20 #include <config.h>
21 
22 #include <drizzled/select_dumpvar.h>
23 #include <drizzled/sql_lex.h>
24 #include <drizzled/session.h>
25 #include <drizzled/var.h>
26 
27 namespace drizzled {
28 
29 bool select_dumpvar::send_data(List<Item> &items)
30 {
31  if (unit->offset_limit_cnt)
32  { // using limit offset,count
33  unit->offset_limit_cnt--;
34  return 0;
35  }
36  if (row_count++)
37  {
38  my_message(ER_TOO_MANY_ROWS, ER(ER_TOO_MANY_ROWS), MYF(0));
39  return 1;
40  }
41  List<Item>::iterator it(items.begin());
42  BOOST_FOREACH(var* current_var, var_list)
43  {
44  Item* item= it++;
45  if (not item)
46  break;
47  if (current_var->local)
48  continue;
49  Item_func_set_user_var *suv= new Item_func_set_user_var(current_var->s, item);
50  suv->fix_fields(session, 0);
51  suv->check(0);
52  suv->update();
53  }
54  return session->is_error();
55 }
56 
57 bool select_dumpvar::send_eof()
58 {
59  if (not row_count)
60  push_warning(session, DRIZZLE_ERROR::WARN_LEVEL_WARN, ER_SP_FETCH_NO_DATA, ER(ER_SP_FETCH_NO_DATA));
61  /*
62  In order to remember the value of affected rows for ROW_COUNT()
63  function, SELECT INTO has to have an own SQLCOM.
64  @TODO split from SQLCOM_SELECT
65  */
66  session->my_ok(row_count);
67  return 0;
68 }
69 
70 int select_dumpvar::prepare(List<Item> &list, Select_Lex_Unit *u)
71 {
72  unit= u;
73  if (var_list.size() == list.size())
74  return 0;
75  my_message(ER_WRONG_NUMBER_OF_COLUMNS_IN_SELECT, ER(ER_WRONG_NUMBER_OF_COLUMNS_IN_SELECT), MYF(0));
76  return 1;
77 }
78 
79 } // namespace drizzled
void my_ok(ha_rows affected_rows=0, ha_rows found_rows_arg=0, uint64_t passed_id=0, const char *message=NULL)
Definition: session.cc:1877
TODO: Rename this file - func.h is stupid.
bool is_error() const
Definition: session.cc:1871