/**
* Get an instance of a class based on a class identifier
*
* @param ObjectIdentifier $identifier
* @param bool $fallback Use fallbacks when locating the class. Default is TRUE.
* @return string Return the identifier class or FALSE on failure.
*/
protected function _locate(ObjectIdentifier $identifier, $fallback = true)
{
$class = $this->__registry->getClass($identifier);
//If the class is FALSE we have tried to locate it already, do not locate it again.
if (empty($class) && $class !== false) {
$class = $this->_locators[$identifier->getType()]->locate($identifier, $fallback);
//If we are falling back set the class in the registry
if ($fallback) {
if (!$this->__registry->get($identifier) instanceof ObjectInterface) {
$this->__registry->setClass($identifier, $class);
}
}
}
return $class;
}
