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add.php
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<?php
/**
* Global Search Engine for Moodle
*
* @package search
* @category core
* @subpackage search_engine
* @author Michael Champanis (mchampan) [[email protected]], Valery Fremaux [[email protected]] > 1.8
* @date 2008/03/31
* @license http://www.gnu.org/copyleft/gpl.html GNU Public License
*
* Asynchronous adder for new indexable contents
*
* Major chages in this review is passing the xxxx_db_names return to
* multiple arity to handle multiple document types modules
*/
/**
* includes and requires
*/
require_once('../config.php');
require_once("$CFG->dirroot/search/lib.php");
/// checks global search activation
require_login();
if (empty($CFG->enableglobalsearch)) {
error(get_string('globalsearchdisabled', 'search'));
}
if (!isadmin()) {
error(get_string('beadmin', 'search'), "$CFG->wwwroot/login/index.php");
}
require_once("$CFG->dirroot/search/indexlib.php");
$index = new Zend_Search_Lucene(SEARCH_INDEX_PATH);
$dbcontrol = new IndexDBControl();
$addition_count = 0;
$startindextime = time();
$indexdate = $CFG->search_indexer_run_date;
mtrace('Starting index update (additions)...');
mtrace('Index size before: '.$CFG->search_index_size."\n");
/// get all modules
if ($mods = get_records_select('modules')) {
/// append virtual modules onto array
$mods = array_merge($mods, search_get_additional_modules());
foreach ($mods as $mod) {
//build include file and function names
$class_file = $CFG->dirroot.'/search/documents/'.$mod->name.'_document.php';
$db_names_function = $mod->name.'_db_names';
$get_document_function = $mod->name.'_single_document';
$get_newrecords_function = $mod->name.'_new_records';
$additions = array();
if (file_exists($class_file)) {
require_once($class_file);
//if both required functions exist
if (function_exists($db_names_function) and function_exists($get_document_function)) {
mtrace("Checking $mod->name module for additions.");
$valuesArray = $db_names_function();
if ($valuesArray){
foreach($valuesArray as $values){
$where = (isset($values[5])) ? 'AND ('.$values[5].')' : '';
$itemtypes = ($values[4] != '*' && $values[4] != 'any') ? " AND itemtype = '{$values[4]}' " : '' ;
//select records in MODULE table, but not in SEARCH_DATABASE_TABLE
$table = SEARCH_DATABASE_TABLE;
$query = "
SELECT
docid,
itemtype
FROM
{$CFG->prefix}{$table}
WHERE
doctype = '{$mod->name}'
$itemtypes
";
$docIds = get_records_sql_menu($query);
$docIdList = ($docIds) ? implode("','", array_keys($docIds)) : '' ;
$query = "
SELECT id,
{$values[0]} as docid
FROM
{$CFG->prefix}{$values[1]}
WHERE
id NOT IN ('{$docIdList}') and
{$values[2]} > {$indexdate}
$where
";
$records = get_records_sql($query);
// foreach record, build a module specific search document using the get_document function
if (is_array($records)) {
foreach($records as $record) {
$add = $get_document_function($record->docid, $values[4]);
// some documents may not be indexable
if ($add)
$additions[] = $add;
}
}
}
// foreach document, add it to the index and database table
foreach ($additions as $add) {
++$addition_count;
// object to insert into db
$dbid = $dbcontrol->addDocument($add);
// synchronise db with index
$add->addField(Zend_Search_Lucene_Field::Keyword('dbid', $dbid));
mtrace(" Add: $add->title (database id = $add->dbid, moodle instance id = $add->docid)");
$index->addDocument($add);
}
}
else{
mtrace("No types to add.\n");
}
mtrace("Finished $mod->name.\n");
}
}
}
}
/// commit changes
$index->commit();
/// update index date and size
set_config("search_indexer_run_date", $startindextime);
set_config("search_index_size", (int)$CFG->search_index_size + (int)$addition_count);
/// print some additional info
mtrace("Added $addition_count documents.");
mtrace('Index size after: '.$index->count());
?>