lib/dml/mariadb_native_moodle_database.php

   1 <?php
   2 // This file is part of Moodle - http://moodle.org/
   3 //
   4 // Moodle is free software: you can redistribute it and/or modify
   5 // it under the terms of the GNU General Public License as published by
   6 // the Free Software Foundation, either version 3 of the License, or
   7 // (at your option) any later version.
   8 //
   9 // Moodle is distributed in the hope that it will be useful,
  10 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  11 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12 // GNU General Public License for more details.
  13 //
  14 // You should have received a copy of the GNU General Public License
  15 // along with Moodle.  If not, see <http://www.gnu.org/licenses/>.
  16
  17 /**
  18  * Native MariaDB class representing moodle database interface.
  19  *
  20  * @package    core_dml
  21  * @copyright  2013 Petr Skoda {@link http://skodak.org}
  22  * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
  23  */
  24
  25 defined('MOODLE_INTERNAL') || die();
  26
  27 require_once(__DIR__.'/moodle_database.php');
  28 require_once(__DIR__.'/mysqli_native_moodle_database.php');
  29 require_once(__DIR__.'/mysqli_native_moodle_recordset.php');
  30 require_once(__DIR__.'/mysqli_native_moodle_temptables.php');
  31
  32 /**
  33  * Native MariaDB class representing moodle database interface.
  34  *
  35  * @package    core_dml
  36  * @copyright  2013 Petr Skoda {@link http://skodak.org}
  37  * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
  38  */
  39 class mariadb_native_moodle_database extends mysqli_native_moodle_database {
  40
  41     /**
  42      * Returns localised database type name
  43      * Note: can be used before connect()
  44      * @return string
  45      */
  46     public function get_name() {
  47         return get_string('nativemariadb', 'install');
  48     }
  49
  50     /**
  51      * Returns localised database configuration help.
  52      * Note: can be used before connect()
  53      * @return string
  54      */
  55     public function get_configuration_help() {
  56         return get_string('nativemariadbhelp', 'install');
  57     }
  58
  59     /**
  60      * Returns the database vendor.
  61      * Note: can be used before connect()
  62      * @return string The db vendor name, usually the same as db family name.
  63      */
  64     public function get_dbvendor() {
  65         return 'mariadb';
  66     }
  67
  68     /**
  69      * Returns more specific database driver type
  70      * Note: can be used before connect()
  71      * @return string db type mysqli, pgsql, oci, mssql, sqlsrv
  72      */
  73     protected function get_dbtype() {
  74         return 'mariadb';
  75     }
  76
  77     /**
  78      * Returns database server info array
  79      * @return array Array containing 'description' and 'version' info
  80      */
  81     public function get_server_info() {
  82         $version = $this->mysqli->server_info;
  83         $matches = null;
  84         if (preg_match('/^5\.5\.5-(10\..+)-MariaDB/i', $version, $matches)) {
  85             // Looks like MariaDB decided to use these weird version numbers for better BC with MySQL...
  86             $version = $matches[1];
  87         }
  88         return array('description'=>$this->mysqli->server_info, 'version'=>$version);
  89     }
  90
  91     protected function has_breaking_change_quoted_defaults() {
  92         $version = $this->get_server_info()['version'];
  93         // Breaking change since 10.2.7: MDEV-13132.
  94         return version_compare($version, '10.2.7', '>=');
  95     }
  96
  97     public function has_breaking_change_sqlmode() {
  98         $version = $this->get_server_info()['version'];
  99         // Breaking change since 10.2.4: https://mariadb.com/kb/en/the-mariadb-library/sql-mode/#setting-sql_mode.
 100         return version_compare($version, '10.2.4', '>=');
 101     }
 102
 103     /**
 104      * It is time to require transactions everywhere.
 105      *
 106      * MyISAM is NOT supported!
 107      *
 108      * @return bool
 109      */
 110     protected function transactions_supported() {
 111         if ($this->external) {
 112             return parent::transactions_supported();
 113         }
 114         return true;
 115     }
 116
 117     /**
 118      * Does this mariadb instance support fulltext indexes?
 119      *
 120      * @return bool
 121      */
 122     public function is_fulltext_search_supported() {
 123         $info = $this->get_server_info();
 124
 125         if (version_compare($info['version'], '10.0.5', '>=')) {
 126             return true;
 127         }
 128         return false;
 129     }
 130 }