/**
* Check whether we want to try another language.
* @param string $term Search term
* @return array|null Array of (interwiki, dbname) for another wiki to try, or null
*/
private function hasSecondaryLanguage($term)
{
if (empty($GLOBALS['wgCirrusSearchLanguageToWikiMap']) || empty($GLOBALS['wgCirrusSearchWikiToNameMap'])) {
// map's empty - no need to bother with detection
return null;
}
$detected = null;
$arguments = array($this, $term);
foreach ($GLOBALS['wgCirrusSearchLanguageDetectors'] as $name => $callback) {
$lang = call_user_func_array($callback, $arguments);
$wiki = self::wikiForLanguage($lang);
if ($wiki !== null) {
// it might be more accurate to attach these to the 'next'
// log context? It would be inconsistent with the
// langdetect => false condition which does not have a next
// request though.
Searcher::appendLastLogContext(array('langdetect' => $name));
$detected = $wiki;
break;
}
}
if ($detected === null) {
Searcher::appendLastLogContext(array('langdetect' => 'failed'));
}
// check whether we have second language functionality enabled.
// This comes after the actual detection so we can include the
// results of detection in AB test control buckets.
if (!$GLOBALS['wgCirrusSearchEnableAltLanguage']) {
return null;
}
return $detected;
}
