BaseModelMBean.java 文件源码

/**
 * Send an <code>AttributeChangeNotification</code> to all registered
 * listeners.
 *
 * @param oldValue
 *            The original value of the <code>Attribute</code>
 * @param newValue
 *            The new value of the <code>Attribute</code>
 *
 * @exception MBeanException
 *                if an object initializer throws an exception
 * @exception RuntimeOperationsException
 *                wraps IllegalArgumentException when the specified
 *                notification is <code>null</code> or invalid
 */
@Override
public void sendAttributeChangeNotification(Attribute oldValue, Attribute newValue)
        throws MBeanException, RuntimeOperationsException {

    // Calculate the class name for the change notification
    String type = null;
    if (newValue.getValue() != null)
        type = newValue.getValue().getClass().getName();
    else if (oldValue.getValue() != null)
        type = oldValue.getValue().getClass().getName();
    else
        return; // Old and new are both null == no change

    AttributeChangeNotification notification = new AttributeChangeNotification(this, 1, System.currentTimeMillis(),
            "Attribute value has changed", oldValue.getName(), type, oldValue.getValue(), newValue.getValue());
    sendAttributeChangeNotification(notification);

}