search/delete.php

   1 <?php
   2
   3   require_once('../config.php');
   4   require_once("$CFG->dirroot/search/lib.php");
   5
   6   require_login();
   7
   8   if (empty($CFG->enableglobalsearch)) {
   9     error('Global searching is not enabled.');
  10   }
  11
  12   if (!isadmin()) {
  13     error("You need to be an admin user to use this page.", "$CFG->wwwroot/login/index.php");
  14   } //if
  15
  16   //check for php5 (lib.php)
  17   if (!search_check_php5()) {
  18     $phpversion = phpversion();
  19     mtrace("Sorry, global search requires PHP 5.0.0 or later (currently using version $phpversion)");
  20     exit(0);
  21   } //if
  22
  23   require_once("$CFG->dirroot/search/indexlib.php");
  24
  25   $index = new Zend_Search_Lucene(SEARCH_INDEX_PATH);
  26   $dbcontrol = new IndexDBControl();
  27   $deletion_count = 0;
  28
  29   mtrace('<pre>Starting clean-up of removed records...');
  30   mtrace('Index size before: '.$CFG->search_index_size."\n");
  31
  32   if ($mods = get_records_select('modules')) {
  33   $mods = array_merge($mods, search_get_additional_modules());
  34
  35   foreach ($mods as $mod) {
  36     //build function names
  37     $class_file = $CFG->dirroot.'/search/documents/'.$mod->name.'_document.php';
  38     $delete_function = $mod->name.'_delete';
  39     $db_names_function = $mod->name.'_db_names';
  40     $deletions = array();
  41
  42     if (file_exists($class_file)) {
  43       require_once($class_file);
  44
  45       if (function_exists($delete_function) and function_exists($db_names_function)) {
  46         mtrace("Checking $mod->name module for deletions.");
  47         $values = $db_names_function();
  48
  49         $sql = "select id, docid from ".SEARCH_DATABASE_TABLE.
  50                 " where doctype like '$mod->name'".
  51                 " and docid not in".
  52                 " (select ".$values[0]." from ".$values[1].")";
  53
  54         $records = get_records_sql($sql);
  55
  56         //build an array of all the deleted records
  57         if (is_array($records)) {
  58           foreach($records as $record) {
  59             $deletions[] = $delete_function($record->docid);
  60           } //foreach
  61         } //if
  62
  63         foreach ($deletions as $delete) {
  64           //find the specific document in the index, using it's docid and doctype as keys
  65           $doc = $index->find("+docid:$delete +doctype:$mod->name");
  66
  67           //get the record, should only be one
  68           foreach ($doc as $thisdoc) {
  69             ++$deletion_count;
  70             mtrace("  Delete: $thisdoc->title (database id = $thisdoc->dbid, index id = $thisdoc->id, moodle instance id = $thisdoc->docid)");
  71
  72             //remove it from index and database table
  73             $dbcontrol->delDocument($thisdoc);
  74             $index->delete($thisdoc->id);
  75           } //foreach
  76         } //foreach
  77
  78         mtrace("Finished $mod->name.\n");
  79       } //if
  80     } //if
  81   } //foreach
  82   } //if
  83
  84   //commit changes
  85   $index->commit();
  86
  87   //update index date and index size
  88   set_config("search_indexer_run_date", time());
  89   set_config("search_index_size", (int)$CFG->search_index_size - (int)$deletion_count);
  90
  91   mtrace("Finished $deletion_count removals.");
  92   mtrace('Index size after: '.$index->count().'</pre>');
  93
  94 ?>