/**
* Returns the SearchProvider object
* which has to be an ISearchProvider implementation
*
* @access public
* @return object implementation of ISearchProvider
* @throws FatalMisconfigurationException, FatalNotImplementedException
*/
public static function GetSearchProvider()
{
if (!isset(ZPush::$searchProvider)) {
// is a global searchprovider configured ? It will outrank the backend
if (defined('SEARCH_PROVIDER') && @constant('SEARCH_PROVIDER') != "") {
$searchClass = @constant('SEARCH_PROVIDER');
if (!class_exists($searchClass)) {
self::IncludeBackend($searchClass);
}
if (class_exists($searchClass)) {
$aSearchProvider = new $searchClass();
} else {
throw new FatalMisconfigurationException(sprintf("Search provider '%s' can not be loaded. Check configuration!", $searchClass));
}
} else {
$aSearchProvider = self::GetBackend()->GetSearchProvider();
}
if (in_array('ISearchProvider', class_implements($aSearchProvider))) {
ZPush::$searchProvider = $aSearchProvider;
} else {
throw new FatalNotImplementedException("Instantiated SearchProvider does not implement the ISearchProvider interface!");
}
}
return ZPush::$searchProvider;
}
