lib/dml/pgsql_native_moodle_temptables.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  * PGSQL specific temptables store. Needed because temporary tables
  19  * are named differently than normal tables. Also used to be able to retrieve
  20  * temp table names included in the get_tables() method of the DB.
  21  *
  22  * @package    core_dml
  23  * @copyright  2010 onwards Eloy Lafuente (stronk7) {@link http://stronk7.com}
  24  * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
  25  */
  26
  27 defined('MOODLE_INTERNAL') || die();
  28
  29 require_once(__DIR__.'/moodle_temptables.php');
  30
  31 class pgsql_native_moodle_temptables extends moodle_temptables {
  32     /**
  33      * Analyze the data in temporary tables to force statistics collection after bulk data loads.
  34      * PostgreSQL does not natively support automatic temporary table stats collection, so we do it.
  35      *
  36      * @return void
  37      */
  38     public function update_stats() {
  39         $temptables = $this->get_temptables();
  40         foreach ($temptables as $temptablename) {
  41             $this->mdb->execute("ANALYZE {".$temptablename."}");
  42         }
  43     }
  44 }