function defaults($set=false) {
		$out = [];
		$fields = $this->fieldConf;
		if ($this->dbsType == 'sql')
			$fields = array_replace_recursive($this->mapper->schema(),$fields);
		foreach($fields as $field_key => $field_conf)
			if (array_key_exists('default',$field_conf)) {
				$val = ($field_conf['default'] === \DB\SQL\Schema::DF_CURRENT_TIMESTAMP)
					? date('Y-m-d H:i:s') : $field_conf['default'];
				if ($val!==NULL) {
					$out[$field_key]=$val;
					if ($set)
						$this->set($field_key, $val);
				}
			}
		return $out;
	}