Validator.java 文件源码

/**
 * This method validates if the given Object is a valid Google CAP Object.
 *  
 * @param msg The Coogle CAP Object
 * @return the valid Google CAP Object
 * @throws InvalidObjectException If the Object is no valid Google CAP object
 */
public static Alert checkIfAlertObject(Object msg) throws InvalidObjectException {
    Alert alert = null;
    if (msg instanceof Alert) {
        alert = (Alert)msg;
    } else {
        throw new InvalidObjectException("Given Object is no Alert Object!");
    }
    return alert;
}