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| <?php | |
| /** | |
| * | |
| * This file is part of the phpBB Forum Software package. | |
| * | |
| * @copyright (c) phpBB Limited <https://www.phpbb.com> | |
| * @license GNU General Public License, version 2 (GPL-2.0) | |
| * | |
| * For full copyright and license information, please see | |
| * the docs/CREDITS.txt file. | |
| * | |
| */ | |
| namespace phpbb\db\migration\data\v310; | |
| class postgres_fulltext_drop extends \phpbb\db\migration\migration | |
| { | |
| protected $indexes; | |
| public function effectively_installed() | |
| { | |
| // This migration is irrelevant for all non-PostgreSQL DBMSes. | |
| if (strpos($this->db->get_sql_layer(), 'postgres') === false) | |
| { | |
| return true; | |
| } | |
| $this->find_indexes_to_drop(); | |
| return empty($this->indexes); | |
| } | |
| static public function depends_on() | |
| { | |
| return array( | |
| '\phpbb\db\migration\data\v310\dev', | |
| ); | |
| } | |
| public function update_schema() | |
| { | |
| if (empty($this->indexes)) | |
| { | |
| return array(); | |
| } | |
| /* | |
| * Drop FULLTEXT indexes related to PostgreSQL fulltext search. | |
| * Doing so is equivalent to dropping the search index from the ACP. | |
| * Possibly time-consuming recreation of the search index (i.e. | |
| * FULLTEXT indexes) is left as a task to the admin to not | |
| * unnecessarily stall the upgrade process. The new search index will | |
| * then require about 40% less table space (also see PHPBB3-11040). | |
| */ | |
| return array( | |
| 'drop_keys' => array( | |
| $this->table_prefix . 'posts' => $this->indexes, | |
| ), | |
| ); | |
| } | |
| public function find_indexes_to_drop() | |
| { | |
| if ($this->indexes !== null) | |
| { | |
| return $this->indexes; | |
| } | |
| $this->indexes = array(); | |
| $potential_keys = array('post_subject', 'post_text', 'post_content'); | |
| foreach ($potential_keys as $key) | |
| { | |
| if ($this->db_tools->sql_index_exists($this->table_prefix . 'posts', $key)) | |
| { | |
| $this->indexes[] = $key; | |
| } | |
| } | |
| return $this->indexes; | |
| } | |
| } |