CListField::_read_from_cache

private function _read_from_cache($field_id)
{
	global $DB;

	if($this->_iblock_id > 0 && !isset(self::$prop_cache[$this->_iblock_id]))
	{
		$rsFields = $DB->Query("
			SELECT * FROM b_lists_field
			WHERE IBLOCK_ID = ".$this->_iblock_id."
		", false, "File: ".__FILE__."
Line: ".__LINE__);

		self::$prop_cache[$this->_iblock_id] = array();
		while($arField = $rsFields->Fetch())
			self::$prop_cache[$this->_iblock_id][$arField["FIELD_ID"]] = $arField;
	}

	if(isset(self::$prop_cache[$this->_iblock_id][$field_id]))
		return self::$prop_cache[$this->_iblock_id][$field_id];
	else
		return false;
}