MX4JModelMBean.java 文件源码

public void sendAttributeChangeNotification(Attribute oldAttribute, Attribute newAttribute) throws MBeanException, RuntimeOperationsException
{
   if (oldAttribute == null || newAttribute == null) throw new RuntimeOperationsException(new IllegalArgumentException(LocalizedStrings.MX4JModelMBean_ATTRIBUTE_CANNOT_BE_NULL.toLocalizedString()));
   if (!oldAttribute.getName().equals(newAttribute.getName())) throw new RuntimeOperationsException(new IllegalArgumentException(LocalizedStrings.MX4JModelMBean_ATTRIBUTE_NAMES_CANNOT_BE_DIFFERENT.toLocalizedString()));

   // TODO: the source must be the object name of the MBean if the listener was registered through MBeanServer
   Object oldValue = oldAttribute.getValue();
   AttributeChangeNotification n = new AttributeChangeNotification(this,
                                                                   1,
                                                                   System.currentTimeMillis(),
                                                                   "Attribute value changed",
                                                                   oldAttribute.getName(),
                                                                   oldValue == null ? null : oldValue.getClass().getName(),
                                                                   oldValue,
                                                                   newAttribute.getValue());
   sendAttributeChangeNotification(n);
}