1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
|
<?php
/**
* @copyright Copyright (c) 2017, ownCloud GmbH
*
* @author Joas Schilling <coding@schilljs.com>
*
* @license AGPL-3.0
*
* This code is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License, version 3,
* as published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License, version 3,
* along with this program. If not, see <http://www.gnu.org/licenses/>
*
*/
namespace OC\DB;
use Doctrine\DBAL\Platforms\PostgreSqlPlatform;
use Doctrine\DBAL\Schema\ColumnDiff;
use Doctrine\DBAL\Schema\TableDiff;
use Doctrine\DBAL\Types\Type;
class OCPostgreSqlPlatform extends PostgreSqlPlatform {
/**
* {@inheritDoc}
*/
public function getAlterTableSQL(TableDiff $diff){
$queries = parent::getAlterTableSQL($diff);
foreach ($queries as $index => $sql){
// BIGSERIAL could not be used in statements altering column type
// That's why we replace it with BIGINT
// see https://github.com/owncloud/core/pull/28364#issuecomment-315006853
if (preg_match('|(ALTER TABLE\s+\S+\s+ALTER\s+\S+\s+TYPE\s+)(BIGSERIAL)|i', $sql, $matches)) {
$alterTable = $matches[1];
$queries[$index] = $alterTable . 'BIGINT';
}
// Changing integer to bigint kills next autoincrement value
// see https://github.com/owncloud/core/pull/28364#issuecomment-315006853
if (preg_match('|ALTER TABLE\s+(\S+)\s+ALTER\s+(\S+)\s+DROP DEFAULT|i', $sql, $matches)) {
$queryColumnName = $matches[2];
$columnDiff = $this->findColumnDiffByName($diff, $queryColumnName);
if ($columnDiff && $this->shouldSkipDropDefault($columnDiff)) {
unset($queries[$index]);
continue;
}
}
}
return $queries;
}
/**
* We should NOT drop next sequence value if
* - type was changed from INTEGER to BIGINT
* - column keeps an autoincrement
* - default value is kept NULL
*
* @param ColumnDiff $columnDiff
* @return bool
*/
private function shouldSkipDropDefault(ColumnDiff $columnDiff) {
$column = $columnDiff->column;
$fromColumn = $columnDiff->fromColumn;
return $fromColumn->getType()->getName() === Type::INTEGER
&& $column->getType()->getName() === Type::BIGINT
&& $fromColumn->getDefault() === null
&& $column->getDefault() === null
&& $fromColumn->getAutoincrement()
&& $column->getAutoincrement();
}
/**
* @param TableDiff $diff
* @param string $name
* @return ColumnDiff | false
*/
private function findColumnDiffByName(TableDiff $diff, $name) {
foreach ($diff->changedColumns as $columnDiff) {
$oldColumnName = $columnDiff->getOldColumnName()->getQuotedName($this);
if ($oldColumnName === $name) {
return $columnDiff;
}
}
return false;
}
}
|
