Drizzled Public API Documentation

release_barrier.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 #include <plugin/user_locks/module.h>
23 #include <plugin/user_locks/barrier_storage.h>
24 
25 #include <string>
26 
27 namespace user_locks {
28 namespace barriers {
29 
31 {
32  drizzled::String *res= args[0]->val_str(&value);
33 
34  if (not res || not res->length())
35  {
36  my_error(drizzled::ER_USER_LOCKS_INVALID_NAME_BARRIER, MYF(0));
37  null_value= true;
38  return 0;
39  }
40 
41 
42  drizzled::identifier::user::ptr user_identifier(getSession().user());
43 
44  barriers::return_t result= Barriers::getInstance().release(Key(*user_identifier, res->c_str()), getSession().getSessionId());
45 
46  switch (result)
47  {
48  default:
49  case barriers::SUCCESS:
50  {
51  Storable *list= getSession().getProperty<Storable>(property_key);
52  assert(list);
53  if (not list) // We should have been the owner if it was passed to us, this should never happen
54  {
55  my_error(drizzled::ER_USER_LOCKS_NOT_OWNER_OF_BARRIER, MYF(0));
56  null_value= true;
57 
58  return 0;
59  }
60  list->erase(Key(*user_identifier, res->c_str()));
61  null_value= false;
62 
63  return 1;
64  }
65  case barriers::NOT_FOUND:
66  my_error(drizzled::ER_USER_LOCKS_UNKNOWN_BARRIER, MYF(0));
67  null_value= true;
68  return 0;
69  case barriers::NOT_OWNED_BY:
70  my_error(drizzled::ER_USER_LOCKS_NOT_OWNER_OF_BARRIER, MYF(0));
71  null_value= true;
72  return 0;
73  }
74 }
75 
76 } /* namespace barriers */
77 } /* namespace user_locks */