Drizzled Public API Documentation

release_savepoint.cc
1 /* -*- mode: c++; c-basic-offset: 2; indent-tabs-mode: nil; -*-
2  * vim:expandtab:shiftwidth=2:tabstop=2:smarttab:
3  *
4  * Copyright (C) 2009 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; 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 <drizzled/show.h>
23 #include <drizzled/session.h>
24 #include <drizzled/statement/release_savepoint.h>
25 #include <drizzled/transaction_services.h>
26 #include <drizzled/named_savepoint.h>
27 #include <drizzled/sql_lex.h>
28 #include <drizzled/session/transactions.h>
29 #include <string>
30 
31 using namespace std;
32 
33 namespace drizzled {
34 
35 bool statement::ReleaseSavepoint::execute()
36 {
37  /*
38  * Look through the deque of savepoints. If we
39  * find one with the same name, we release it and
40  * unbind it from our deque.
41  */
42  deque<NamedSavepoint> &savepoints= transaction().savepoints;
43  deque<NamedSavepoint>::iterator iter;
44 
45  for (iter= savepoints.begin(); iter != savepoints.end(); ++iter)
46  {
47  NamedSavepoint &sv= *iter;
48  const string &sv_name= sv.getName();
49  if (my_strnncoll(system_charset_info, (unsigned char *) lex().ident.data(),
50  lex().ident.size(), (unsigned char *) sv_name.c_str(), sv_name.size()) == 0)
51  break;
52  }
53  if (iter != savepoints.end())
54  {
55  NamedSavepoint &sv= *iter;
56  (void) TransactionServices::releaseSavepoint(session(), sv);
57  savepoints.erase(iter);
58  session().my_ok();
59  }
60  else
61  {
62  my_error(ER_SP_DOES_NOT_EXIST, MYF(0), "SAVEPOINT", lex().ident.data());
63  }
64  return false;
65 }
66 
67 } /* namespace drizzled */