CampContext::__set PHP Method

    public final function __set($p_element, $p_value)
    {
        $p_element = CampContext::TranslateProperty($p_element);
        // Verify if an object of this type exists
        if (!is_null(CampContext::ObjectType($p_element))) {
            try {
                if (!is_object($p_value)) {
                    throw new InvalidObjectException($p_element);
                }
                $classFullPath = $GLOBALS['g_campsiteDir'] . '/template_engine/metaclasses/' . CampContext::ObjectType($p_element) . '.php';
                if (file_exists($classFullPath)) {
                    require_once $classFullPath;
                } elseif (class_exists(CampContext::$m_objectTypes[$p_element]['class'])) {
                    $className = CampContext::ObjectType($p_element);
                } else {
                    $pluginImplementsClassFullPath = false;
                    foreach (CampPlugin::GetEnabled() as $CampPlugin) {
                        $pluginClassFullPath = $GLOBALS['g_campsiteDir'] . '/' . $CampPlugin->getBasePath() . '/template_engine/metaclasses/' . CampContext::ObjectType($p_element) . '.php';
                        if (file_exists($pluginClassFullPath)) {
                            $pluginImplementsClassFullPath = $pluginClassFullPath;
                        }
                    }
                    if ($pluginImplementsClassFullPath) {
                        require_once $pluginImplementsClassFullPath;
                    } else {
                        throw new InvalidObjectException($p_element);
                    }
                }
                $metaclass = CampContext::ObjectType($p_element);
                if (!is_a($p_value, $metaclass)) {
                    throw new InvalidObjectException($p_element);
                }
                if (isset($this->m_objects[$p_element]) && !is_null($this->m_objects[$p_element])) {
                    $oldValue = $this->m_objects[$p_element];
                } else {
                    $oldValue = new $metaclass();
                }
                if (isset(CampContext::$m_objectTypes[$p_element]['handler'])) {
                    $setHandler = CampContext::$m_objectTypes[$p_element]['handler'];
                    $this->{$setHandler}($oldValue, $p_value);
                } else {
                    $this->m_objects[$p_element] = $p_value;
                }
                return isset($this->m_objects[$p_element]) ? $this->m_objects[$p_element] : null;
            } catch (InvalidObjectException $e) {
                $this->trigger_invalid_object_error($e->getClassName());
                return null;
            }
        }
        // Verify if a property with this name exists
        if (is_array($this->m_properties) && array_key_exists($p_element, $this->m_properties)) {
            return $this->m_properties[$p_element] = $p_value;
        }
        // No object of this type of property with this name exist.
        $this->trigger_invalid_property_error($p_element);
        return null;
    }