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   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   * Search area for mod_survey activities.
  19   *
  20   * @package    mod_survey
  21   * @copyright  2015 David Monllao {@link http://www.davidmonllao.com}
  22   * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
  23   */
  24  
  25  namespace mod_survey\search;
  26  
  27  defined('MOODLE_INTERNAL') || die();
  28  
  29  /**
  30   * Search area for mod_survey activities.
  31   *
  32   * @package    mod_survey
  33   * @copyright  2015 David Monllao {@link http://www.davidmonllao.com}
  34   * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
  35   */
  36  class activity extends \core_search\base_activity {
  37  
  38      /**
  39       * Returns true if this area uses file indexing.
  40       *
  41       * @return bool
  42       */
  43      public function uses_file_indexing() {
  44          return true;
  45      }
  46  
  47      /**
  48       * Returns recordset containing required data for indexing activities.
  49       *
  50       * Overridden to discard records with courseid = 0.
  51       *
  52       * @param int $modifiedfrom timestamp
  53       * @param \context|null $context Context
  54       * @return \moodle_recordset|null Recordset, or null if no possible activities in given context
  55       */
  56      public function get_document_recordset($modifiedfrom = 0, \context $context = null) {
  57          global $DB;
  58          list ($contextjoin, $contextparams) = $this->get_context_restriction_sql(
  59                  $context, $this->get_module_name(), 'modtable');
  60          if ($contextjoin === null) {
  61              return null;
  62          }
  63          return $DB->get_recordset_sql('SELECT modtable.* FROM {' . $this->get_module_name() .
  64                  '} modtable ' . $contextjoin . ' WHERE modtable.' . static::MODIFIED_FIELD_NAME .
  65                  ' >= ? AND modtable.course != ? ORDER BY modtable.' . static::MODIFIED_FIELD_NAME .
  66                  ' ASC',
  67                  array_merge($contextparams, [$modifiedfrom, 0]));
  68      }
  69  
  70  }