search/update.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   $update_count = 0;
  28
  29   $indexdate = $CFG->search_indexer_run_date;
  30
  31   mtrace("<pre>Starting index update (updates)...\n");
  32
  33   if ($mods = get_records_select('modules')) {
  34   $mods = array_merge($mods, search_get_additional_modules());
  35
  36   foreach ($mods as $mod) {
  37     $class_file = $CFG->dirroot.'/search/documents/'.$mod->name.'_document.php';
  38     $get_document_function = $mod->name.'_single_document';
  39     $delete_function = $mod->name.'_delete';
  40     $db_names_function = $mod->name.'_db_names';
  41     $updates = array();
  42
  43     if (file_exists($class_file)) {
  44       require_once($class_file);
  45
  46       if (function_exists($delete_function) and function_exists($db_names_function) and function_exists($get_document_function)) {
  47         mtrace("Checking $mod->name module for updates.");
  48         $values = $db_names_function();
  49
  50         //TODO: check 'in' syntax with other RDBMS' (add and update.php as well)
  51         $sql = "select id, ".$values[0]." as docid from ".$values[1].
  52                " where ".$values[3]." > $indexdate".
  53                " and id in (select docid from ".SEARCH_DATABASE_TABLE.")";
  54
  55         $records = get_records_sql($sql);
  56
  57         if (is_array($records)) {
  58           foreach($records as $record) {
  59             $updates[] = $delete_function($record->docid);
  60           } //foreach
  61         } //if
  62
  63         foreach ($updates as $update) {
  64           ++$update_count;
  65
  66           //delete old document
  67           $doc = $index->find("+docid:$update +doctype:$mod->name");
  68
  69           //get the record, should only be one
  70           foreach ($doc as $thisdoc) {
  71             mtrace("  Delete: $thisdoc->title (database id = $thisdoc->dbid, index id = $thisdoc->id, moodle instance id = $thisdoc->docid)");
  72
  73             $dbcontrol->delDocument($thisdoc);
  74             $index->delete($thisdoc->id);
  75           } //foreach
  76
  77           //add new modified document back into index
  78           $add = $get_document_function($update);
  79
  80           //object to insert into db
  81           $dbid = $dbcontrol->addDocument($add);
  82
  83           //synchronise db with index
  84           $add->addField(Zend_Search_Lucene_Field::Keyword('dbid', $dbid));
  85
  86           mtrace("  Add: $add->title (database id = $add->dbid, moodle instance id = $add->docid)");
  87
  88           $index->addDocument($add);
  89         } //foreach
  90
  91         mtrace("Finished $mod->name.\n");
  92       } //if
  93     } //if
  94   } //foreach
  95   } //if
  96
  97   //commit changes
  98   $index->commit();
  99
 100   //update index date
 101   set_config("search_indexer_run_date", time());
 102
 103   mtrace("Finished $update_count updates.</pre>");
 104
 105 ?>