1100.3.57
by Padraig O'Sullivan
Extracted the RENAME TABLE command into its own class and implementation |
1 |
/* -*- mode: c++; c-basic-offset: 2; indent-tabs-mode: nil; -*-
|
2 |
* vim:expandtab:shiftwidth=2:tabstop=2:smarttab:
|
|
3 |
*
|
|
1999.6.1
by kalebral at gmail
update Copyright strings to a more common format to help with creating the master debian copyright file |
4 |
* Copyright (C) 2009 Sun Microsystems, Inc.
|
1100.3.57
by Padraig O'Sullivan
Extracted the RENAME TABLE command into its own class and implementation |
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 |
||
2173.2.1
by Monty Taylor
Fixes incorrect usage of include |
21 |
#include <config.h> |
1100.3.57
by Padraig O'Sullivan
Extracted the RENAME TABLE command into its own class and implementation |
22 |
#include <drizzled/show.h> |
23 |
#include <drizzled/lock.h> |
|
24 |
#include <drizzled/session.h> |
|
25 |
#include <drizzled/statement/rename_table.h> |
|
2173.2.1
by Monty Taylor
Fixes incorrect usage of include |
26 |
#include <drizzled/pthread_globals.h> |
27 |
#include <drizzled/plugin/storage_engine.h> |
|
2211.2.2
by David Shrewsbury
Output USE from statement transform code for RAW_SQL with an identified schema. Set schema name from Session for RENAME. |
28 |
#include <drizzled/transaction_services.h> |
2239.1.10
by Olaf van der Spek
Refactor includes |
29 |
#include <drizzled/sql_lex.h> |
2272.1.1
by Olaf van der Spek
Refactor includes |
30 |
#include <drizzled/table/cache.h> |
1100.3.57
by Padraig O'Sullivan
Extracted the RENAME TABLE command into its own class and implementation |
31 |
|
2239.1.10
by Olaf van der Spek
Refactor includes |
32 |
namespace drizzled { |
1100.3.57
by Padraig O'Sullivan
Extracted the RENAME TABLE command into its own class and implementation |
33 |
|
34 |
bool statement::RenameTable::execute() |
|
35 |
{
|
|
2224.2.8
by Olaf van der Spek
Statement::lex() |
36 |
TableList *first_table= (TableList *) lex().select_lex.table_list.first; |
37 |
TableList *all_tables= lex().query_tables; |
|
1100.3.57
by Padraig O'Sullivan
Extracted the RENAME TABLE command into its own class and implementation |
38 |
assert(first_table == all_tables && first_table != 0); |
39 |
TableList *table; |
|
1890.2.40
by Stewart Smith
error out on RENAME TABLE inside a transaction with ER_TRANSACTIONAL_DDL_NOT_SUPPORTED |
40 |
|
2227.4.1
by Olaf van der Spek
Statement::session() |
41 |
if (session().inTransaction()) |
1890.2.40
by Stewart Smith
error out on RENAME TABLE inside a transaction with ER_TRANSACTIONAL_DDL_NOT_SUPPORTED |
42 |
{
|
43 |
my_error(ER_TRANSACTIONAL_DDL_NOT_SUPPORTED, MYF(0)); |
|
44 |
return true; |
|
45 |
}
|
|
46 |
||
1100.3.57
by Padraig O'Sullivan
Extracted the RENAME TABLE command into its own class and implementation |
47 |
for (table= first_table; table; table= table->next_local->next_local) |
48 |
{
|
|
49 |
TableList old_list, new_list; |
|
50 |
/*
|
|
51 |
we do not need initialize old_list and new_list because we will
|
|
52 |
come table[0] and table->next[0] there
|
|
53 |
*/
|
|
54 |
old_list= table[0]; |
|
55 |
new_list= table->next_local[0]; |
|
56 |
}
|
|
57 |
||
1890.2.40
by Stewart Smith
error out on RENAME TABLE inside a transaction with ER_TRANSACTIONAL_DDL_NOT_SUPPORTED |
58 |
if (renameTables(first_table)) |
1100.3.57
by Padraig O'Sullivan
Extracted the RENAME TABLE command into its own class and implementation |
59 |
{
|
60 |
return true; |
|
61 |
}
|
|
2098.4.1
by Brian Aker
Make session encapsulated. |
62 |
|
1100.3.57
by Padraig O'Sullivan
Extracted the RENAME TABLE command into its own class and implementation |
63 |
return false; |
64 |
}
|
|
65 |
||
66 |
bool statement::RenameTable::renameTables(TableList *table_list) |
|
67 |
{
|
|
68 |
bool error= true; |
|
69 |
TableList *ren_table= NULL; |
|
70 |
||
71 |
/*
|
|
72 |
Avoid problems with a rename on a table that we have locked or
|
|
73 |
if the user is trying to to do this in a transcation context
|
|
74 |
*/
|
|
2227.4.1
by Olaf van der Spek
Statement::session() |
75 |
if (session().inTransaction()) |
1100.3.57
by Padraig O'Sullivan
Extracted the RENAME TABLE command into its own class and implementation |
76 |
{
|
77 |
my_message(ER_LOCK_OR_ACTIVE_TRANSACTION, ER(ER_LOCK_OR_ACTIVE_TRANSACTION), MYF(0)); |
|
78 |
return true; |
|
79 |
}
|
|
80 |
||
2227.4.1
by Olaf van der Spek
Statement::session() |
81 |
if (session().wait_if_global_read_lock(false, true)) |
1100.3.57
by Padraig O'Sullivan
Extracted the RENAME TABLE command into its own class and implementation |
82 |
return true; |
83 |
||
1938.4.12
by Brian Aker
Merge in lock refactor, this just encapsulates. |
84 |
{
|
2275.3.1
by Olaf van der Spek
Remove table::Cache::singleton() |
85 |
boost::mutex::scoped_lock scopedLock(table::Cache::mutex()); /* Rename table lock for exclusive access */ |
1938.4.13
by Brian Aker
Merge in change to rename to encapsulate the lock. |
86 |
|
2227.4.1
by Olaf van der Spek
Statement::session() |
87 |
if (not session().lock_table_names_exclusively(table_list)) |
1938.4.13
by Brian Aker
Merge in change to rename to encapsulate the lock. |
88 |
{
|
89 |
error= false; |
|
90 |
ren_table= renameTablesInList(table_list, false); |
|
91 |
||
92 |
if (ren_table) |
|
93 |
{
|
|
94 |
/* Rename didn't succeed; rename back the tables in reverse order */
|
|
95 |
TableList *table; |
|
96 |
||
97 |
/* Reverse the table list */
|
|
98 |
table_list= reverseTableList(table_list); |
|
99 |
||
100 |
/* Find the last renamed table */
|
|
101 |
for (table= table_list; |
|
102 |
table->next_local != ren_table; |
|
103 |
table= table->next_local->next_local) |
|
104 |
{ /* do nothing */ } |
|
105 |
||
106 |
table= table->next_local->next_local; // Skip error table |
|
107 |
||
108 |
/* Revert to old names */
|
|
109 |
renameTablesInList(table, true); |
|
110 |
error= true; |
|
111 |
}
|
|
112 |
||
113 |
table_list->unlock_table_names(); |
|
114 |
}
|
|
1938.4.12
by Brian Aker
Merge in lock refactor, this just encapsulates. |
115 |
}
|
1938.4.13
by Brian Aker
Merge in change to rename to encapsulate the lock. |
116 |
|
117 |
/* Lets hope this doesn't fail as the result will be messy */
|
|
118 |
if (not error) |
|
1938.4.12
by Brian Aker
Merge in lock refactor, this just encapsulates. |
119 |
{
|
2318.6.62
by Olaf van der Spek
Refactor |
120 |
TransactionServices::rawStatement(session(), *session().getQueryString(), *session().schema()); |
2227.4.1
by Olaf van der Spek
Statement::session() |
121 |
session().my_ok(); |
1938.4.12
by Brian Aker
Merge in lock refactor, this just encapsulates. |
122 |
}
|
123 |
||
2227.4.1
by Olaf van der Spek
Statement::session() |
124 |
session().startWaitingGlobalReadLock(); |
1100.3.57
by Padraig O'Sullivan
Extracted the RENAME TABLE command into its own class and implementation |
125 |
|
126 |
return error; |
|
127 |
}
|
|
128 |
||
129 |
TableList *statement::RenameTable::reverseTableList(TableList *table_list) |
|
130 |
{
|
|
131 |
TableList *prev= NULL; |
|
132 |
||
133 |
while (table_list) |
|
134 |
{
|
|
135 |
TableList *next= table_list->next_local; |
|
136 |
table_list->next_local= prev; |
|
137 |
prev= table_list; |
|
138 |
table_list= next; |
|
139 |
}
|
|
1100.3.58
by Padraig O'Sullivan
Few style cleanups. |
140 |
return prev; |
1100.3.57
by Padraig O'Sullivan
Extracted the RENAME TABLE command into its own class and implementation |
141 |
}
|
142 |
||
143 |
bool statement::RenameTable::rename(TableList *ren_table, |
|
144 |
const char *new_db, |
|
145 |
const char *new_table_name, |
|
146 |
bool skip_error) |
|
147 |
{
|
|
148 |
bool rc= true; |
|
149 |
const char *new_alias, *old_alias; |
|
150 |
||
151 |
{
|
|
1874.1.2
by Brian Aker
Encapsulate table_name from table_list. |
152 |
old_alias= ren_table->getTableName(); |
1100.3.57
by Padraig O'Sullivan
Extracted the RENAME TABLE command into its own class and implementation |
153 |
new_alias= new_table_name; |
154 |
}
|
|
155 |
||
1130.1.4
by Monty Taylor
Moved StorageEngine into plugin namespace. |
156 |
plugin::StorageEngine *engine= NULL; |
2159.2.3
by Brian Aker
Remove dead call for getTableMessage() |
157 |
message::table::shared_ptr table_message; |
1100.3.57
by Padraig O'Sullivan
Extracted the RENAME TABLE command into its own class and implementation |
158 |
|
2087.4.2
by Brian Aker
Modify TableIdentifier to fit with the rest of the identifiers. |
159 |
identifier::Table old_identifier(ren_table->getSchemaName(), old_alias, message::Table::STANDARD); |
1100.3.57
by Padraig O'Sullivan
Extracted the RENAME TABLE command into its own class and implementation |
160 |
|
2227.4.2
by Olaf van der Spek
Statement::session() |
161 |
if (not (table_message= plugin::StorageEngine::getTableMessage(session(), old_identifier))) |
1100.3.57
by Padraig O'Sullivan
Extracted the RENAME TABLE command into its own class and implementation |
162 |
{
|
2140.1.3
by Brian Aker
Merge in error message fix for just one type of error for unknown table. |
163 |
my_error(ER_TABLE_UNKNOWN, old_identifier); |
1100.3.57
by Padraig O'Sullivan
Extracted the RENAME TABLE command into its own class and implementation |
164 |
return true; |
165 |
}
|
|
166 |
||
2227.4.2
by Olaf van der Spek
Statement::session() |
167 |
engine= plugin::StorageEngine::findByName(session(), table_message->engine().name()); |
1100.3.57
by Padraig O'Sullivan
Extracted the RENAME TABLE command into its own class and implementation |
168 |
|
2087.4.2
by Brian Aker
Modify TableIdentifier to fit with the rest of the identifiers. |
169 |
identifier::Table new_identifier(new_db, new_alias, message::Table::STANDARD); |
2227.4.2
by Olaf van der Spek
Statement::session() |
170 |
if (plugin::StorageEngine::doesTableExist(session(), new_identifier)) |
1100.3.57
by Padraig O'Sullivan
Extracted the RENAME TABLE command into its own class and implementation |
171 |
{
|
2159.2.4
by Brian Aker
Merge in error wasteful removal. |
172 |
my_error(ER_TABLE_EXISTS_ERROR, new_identifier); |
1100.3.58
by Padraig O'Sullivan
Few style cleanups. |
173 |
return 1; // This can't be skipped |
1100.3.57
by Padraig O'Sullivan
Extracted the RENAME TABLE command into its own class and implementation |
174 |
}
|
175 |
||
2227.4.2
by Olaf van der Spek
Statement::session() |
176 |
rc= rename_table(session(), engine, old_identifier, new_identifier); |
1100.3.58
by Padraig O'Sullivan
Few style cleanups. |
177 |
if (rc && ! skip_error) |
1100.3.57
by Padraig O'Sullivan
Extracted the RENAME TABLE command into its own class and implementation |
178 |
return true; |
179 |
||
180 |
return false; |
|
181 |
}
|
|
182 |
||
183 |
TableList *statement::RenameTable::renameTablesInList(TableList *table_list, |
|
184 |
bool skip_error) |
|
185 |
{
|
|
186 |
TableList *ren_table, *new_table; |
|
187 |
||
188 |
for (ren_table= table_list; ren_table; ren_table= new_table->next_local) |
|
189 |
{
|
|
190 |
new_table= ren_table->next_local; |
|
1874.1.2
by Brian Aker
Encapsulate table_name from table_list. |
191 |
if (rename(ren_table, new_table->getSchemaName(), new_table->getTableName(), skip_error)) |
1100.3.61
by Padraig O'Sullivan
Various style cleanups based on code review comments from Jay. |
192 |
return ren_table; |
1100.3.57
by Padraig O'Sullivan
Extracted the RENAME TABLE command into its own class and implementation |
193 |
}
|
194 |
return 0; |
|
1238.1.4
by Brian Aker
ICC cleanup |
195 |
}
|
1130.3.12
by Monty Taylor
using namespace drizzled; to namespace drizzled { in statement/ |
196 |
|
197 |
} /* namespace drizzled */ |