ModelMBeanInfoSupport.java 文件源码

/**
 * Deserializes a {@link ModelMBeanInfoSupport} from an {@link ObjectInputStream}.
 */
private void readObject(ObjectInputStream in)
throws IOException, ClassNotFoundException {
    if (compat) {
        // Read an object serialized in the old serial form
        //
        ObjectInputStream.GetField fields = in.readFields();
        modelMBeanDescriptor =
                (Descriptor) fields.get("modelMBeanDescriptor", null);
        if (fields.defaulted("modelMBeanDescriptor")) {
            throw new NullPointerException("modelMBeanDescriptor");
        }
        modelMBeanAttributes =
                (MBeanAttributeInfo[]) fields.get("mmbAttributes", null);
        if (fields.defaulted("mmbAttributes")) {
            throw new NullPointerException("mmbAttributes");
        }
        modelMBeanConstructors =
                (MBeanConstructorInfo[]) fields.get("mmbConstructors", null);
        if (fields.defaulted("mmbConstructors")) {
            throw new NullPointerException("mmbConstructors");
        }
        modelMBeanNotifications =
                (MBeanNotificationInfo[]) fields.get("mmbNotifications", null);
        if (fields.defaulted("mmbNotifications")) {
            throw new NullPointerException("mmbNotifications");
        }
        modelMBeanOperations =
                (MBeanOperationInfo[]) fields.get("mmbOperations", null);
        if (fields.defaulted("mmbOperations")) {
            throw new NullPointerException("mmbOperations");
        }
    } else {
        // Read an object serialized in the new serial form
        //
        in.defaultReadObject();
    }
}