Drizzled Public API Documentation

global_read_lock.cc
1 /* - mode: c; c-basic-offset: 2; indent-tabs-mode: nil; -*-
2  * vim:expandtab:shiftwidth=2:tabstop=2:smarttab:
3  *
4  * Copyright (C) 2010 Brian Aker
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
17  * along with this program; if not, write to the Free Software
18  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
19  */
20 
21 #include <config.h>
22 
23 #include <drizzled/session.h>
24 #include <plugin/utility_functions/functions.h>
25 
26 namespace drizzled
27 {
28 
29 namespace utility_functions
30 {
31 
33 {
34  assert(fixed == 1);
35  null_value= false;
36 
37  if (getSession().isGlobalReadLock())
38  return 1;
39 
40  return 0;
41 }
42 
44 {
45  assert(fixed == 1);
46  null_value= false;
47  const std::string &global_state_for_session= display::type(getSession().isGlobalReadLock());
48  str->copy(global_state_for_session.c_str(), global_state_for_session.length(), system_charset_info);
49 
50  return str;
51 }
52 
53 void GlobalReadLock::fix_length_and_dec()
54 {
55  max_length= drizzled::display::max_string_length(getSession().isGlobalReadLock()) * system_charset_info->mbmaxlen;
56 }
57 
58 } /* namespace utility_functions */
59 } /* namespace drizzled */