← Back to branch summary

~drizzle-trunk/drizzle/development

« back to all changes in this revision

Viewing changes to drizzled/statement/savepoint.cc

  • Committer: Monty Taylor
  • Date: 2009-04-14 19:16:51 UTC
  • mto: (997.2.5 mordred)
  • mto: This revision was merged to the branch mainline in revision 994.
  • Revision ID: mordred@inaugust.com-20090414191651-ltbww6hpqks8k7qk
Clarified instructions in README.

Show diffs side-by-side

added added

removed removed

Lines of Context:
drizzled/statement/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
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/savepoint.h>
25
 
#include "drizzled/transaction_services.h"
26
 
#include "drizzled/named_savepoint.h"
27
 
 
28
 
#include <string>
29
 
#include <deque>
30
 
 
31
 
using namespace std;
32
 
 
33
 
namespace drizzled
34
 
{
35
 
 
36
 
bool statement::Savepoint::execute()
37
 
{
38
 
  if (! (session->options & (OPTION_NOT_AUTOCOMMIT | OPTION_BEGIN)))
39
 
  {
40
 
    session->my_ok();
41
 
  }
42
 
  else
43
 
  {
44
 
    /*
45
 
     * Look through the savepoints.  If we find one with
46
 
     * the same name, delete it.
47
 
     */
48
 
    TransactionServices &transaction_services= TransactionServices::singleton();
49
 
    deque<NamedSavepoint> &savepoints= session->transaction.savepoints;
50
 
    deque<NamedSavepoint>::iterator iter;
51
 
 
52
 
    for (iter= savepoints.begin();
53
 
         iter != savepoints.end();
54
 
         ++iter)
55
 
    {
56
 
      NamedSavepoint &sv= *iter;
57
 
      const string &sv_name= sv.getName();
58
 
      if (my_strnncoll(system_charset_info,
59
 
                       (unsigned char *) session->lex->ident.str,
60
 
                       session->lex->ident.length,
61
 
                       (unsigned char *) sv_name.c_str(),
62
 
                       sv_name.size()) == 0)
63
 
        break;
64
 
    }
65
 
    if (iter != savepoints.end())
66
 
    {
67
 
      NamedSavepoint &sv= *iter;
68
 
      (void) transaction_services.ha_release_savepoint(session, sv);
69
 
      savepoints.erase(iter);
70
 
    }
71
 
    
72
 
    NamedSavepoint newsv(session->lex->ident.str, session->lex->ident.length);
73
 
 
74
 
    if (transaction_services.ha_savepoint(session, newsv))
75
 
    {
76
 
      return true;
77
 
    }
78
 
    else
79
 
    {
80
 
      savepoints.push_front(newsv);
81
 
      session->my_ok();
82
 
    }
83
 
  }
84
 
  return false;
85
 
}
86
 
 
87
 
} /* namespace drizzled */