diff options
| -rw-r--r-- | phpBB/phpbb/db/migration/helper.php | 82 |
1 files changed, 82 insertions, 0 deletions
diff --git a/phpBB/phpbb/db/migration/helper.php b/phpBB/phpbb/db/migration/helper.php new file mode 100644 index 0000000000..28a6a56511 --- /dev/null +++ b/phpBB/phpbb/db/migration/helper.php @@ -0,0 +1,82 @@ +<?php +/** +* +* @package db +* @copyright (c) 2014 phpBB Group +* @license http://opensource.org/licenses/gpl-license.php GNU Public License +* +*/ + +namespace phpbb\db\migration; + +/** +* The migrator is responsible for applying new migrations in the correct order. +* +* @package db +*/ +class helper +{ + /** + * Get the schema steps from an array of schema changes + * + * This splits up $schema_changes into individual changes so that the + * changes can be chunked + * + * @param array $schema_changes from migration + * @return array + */ + public function get_schema_steps($schema_changes) + { + $steps = array(); + + // Nested level of data (only supports 1/2 currently) + $nested_level = array( + 'drop_tables' => 1, + 'add_tables' => 1, + 'change_columns' => 2, + 'add_columns' => 2, + 'drop_keys' => 2, + 'drop_columns' => 2, + 'add_primary_keys' => 2, // perform_schema_changes only uses one level, but second is in the function + 'add_unique_index' => 2, + 'add_index' => 2, + ); + + foreach ($nested_level as $change_type => $data_depth) + { + if (!empty($schema_changes[$change_type])) + { + foreach ($schema_changes[$change_type] as $key => $value) + { + if ($data_depth === 1) + { + $steps[] = array( + 'dbtools.perform_schema_changes', array(array( + $change_type => array( + $value, + ), + )), + ); + } + else if ($data_depth === 2) + { + foreach ($value as $key2 => $value2) + { + $steps[] = array( + 'dbtools.perform_schema_changes', array(array( + $change_type => array( + $key => array( + $key2 => $value2, + ), + ), + )), + ); + } + } + } + } + } + + return $steps; + } +} |