Verzeichnisstruktur phpBB-3.1.0
- Veröffentlicht
- 27.10.2014
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helper.php
01 <?php
02 /**
03 *
04 * This file is part of the phpBB Forum Software package.
05 *
06 * @copyright (c) phpBB Limited <https://www.phpbb.com>
07 * @license GNU General Public License, version 2 (GPL-2.0)
08 *
09 * For full copyright and license information, please see
10 * the docs/CREDITS.txt file.
11 *
12 */
13
14 namespace phpbb\db\migration;
15
16 /**
17 * The migrator is responsible for applying new migrations in the correct order.
18 */
19 class helper
20 {
21 /**
22 * Get the schema steps from an array of schema changes
23 *
24 * This splits up $schema_changes into individual changes so that the
25 * changes can be chunked
26 *
27 * @param array $schema_changes from migration
28 * @return array
29 */
30 public function get_schema_steps($schema_changes)
31 {
32 $steps = array();
33
34 // Nested level of data (only supports 1/2 currently)
35 $nested_level = array(
36 'drop_tables' => 1,
37 'add_tables' => 1,
38 'change_columns' => 2,
39 'add_columns' => 2,
40 'drop_keys' => 2,
41 'drop_columns' => 2,
42 'add_primary_keys' => 2, // perform_schema_changes only uses one level, but second is in the function
43 'add_unique_index' => 2,
44 'add_index' => 2,
45 );
46
47 foreach ($nested_level as $change_type => $data_depth)
48 {
49 if (!empty($schema_changes[$change_type]))
50 {
51 foreach ($schema_changes[$change_type] as $key => $value)
52 {
53 if ($data_depth === 1)
54 {
55 $steps[] = array(
56 'dbtools.perform_schema_changes', array(array(
57 $change_type => array(
58 (!is_int($key)) ? $key : 0 => $value,
59 ),
60 )),
61 );
62 }
63 else if ($data_depth === 2)
64 {
65 foreach ($value as $key2 => $value2)
66 {
67 $steps[] = array(
68 'dbtools.perform_schema_changes', array(array(
69 $change_type => array(
70 $key => array(
71 $key2 => $value2,
72 ),
73 ),
74 )),
75 );
76 }
77 }
78 }
79 }
80 }
81
82 return $steps;
83 }
84 }
85