javax.management.remote
Class JMXConnectionNotification

java.lang.Object
  java.util.EventObject
      javax.management.Notification
          javax.management.remote.JMXConnectionNotification

All Implemented Interfaces:

Serializable

public class JMXConnectionNotification
extends Notification

Notification emitted when a client connection is opened or closed or when notifications are lost. These notifications are sent by connector servers (instances of JMXConnectorServer) and by connector clients (instances of JMXConnector). For certain connectors, a session can consist of a sequence of connections. Connection-opened and connection-closed notifications will be sent for each one.

The notification type is one of the following:

The timeStamp of the notification is a time value (consistent with System.currentTimeMillis()) indicating when the notification was constructed.

Since:

1.5

See Also:

Serialized Form

Field Summary
static String	CLOSED           Notification type string for a connection-closed notification.
static String	FAILED           Notification type string for a connection-failed notification.
static String	NOTIFS_LOST           Notification type string for a connection that has possibly lost notifications.
static String	OPENED           Notification type string for a connection-opened notification.

 

Fields inherited from class javax.management.Notification
source

 

Constructor Summary
JMXConnectionNotification(String type, Object source, String connectionId, long sequenceNumber, String message, Object userData)           Constructs a new connection notification.

 

Method Summary
String	getConnectionId()           The connection ID to which this notification pertains.

 

Methods inherited from class javax.management.Notification
getMessage, getSequenceNumber, getTimeStamp, getType, getUserData, setSequenceNumber, setSource, setTimeStamp, setUserData, toString

 

Methods inherited from class java.util.EventObject
getSource

 

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

 

Field Detail

OPENED

public static final String OPENED

Notification type string for a connection-opened notification.

See Also:

Constant Field Values

CLOSED

public static final String CLOSED

Notification type string for a connection-closed notification.

See Also:

Constant Field Values

FAILED

public static final String FAILED

Notification type string for a connection-failed notification.

See Also:

Constant Field Values

NOTIFS_LOST

public static final String NOTIFS_LOST

Notification type string for a connection that has possibly lost notifications.

See Also:

Constant Field Values

JMXConnectionNotification

public JMXConnectionNotification(String type,
                                 Object source,
                                 String connectionId,
                                 long sequenceNumber,
                                 String message,
                                 Object userData)

Constructs a new connection notification. The source of the notification depends on whether it is being sent by a connector server or a connector client:

• For a connector server, if it is registered in an MBean server, the source is the ObjectName under which it is registered. Otherwise, it is a reference to the connector server object itself, an instance of a subclass of JMXConnectorServer.
• For a connector client, the source is a reference to the connector client object, an instance of a class implementing JMXConnector.

Parameters:

type - the type of the notification. This is usually one of the constants OPENED, CLOSED, FAILED, NOTIFS_LOST. It is not an error for it to be a different string.

source - the connector server or client emitting the notification.

connectionId - the ID of the connection within its connector server.

sequenceNumber - a non-negative integer. It is expected but not required that this number will be greater than any previous sequenceNumber in a notification from this source.

message - an unspecified text message, typically containing a human-readable description of the event. Can be null.

userData - an object whose type and meaning is defined by the connector server. Can be null.

Throws:

NullPointerException - if type, source, or connectionId is null.

IllegalArgumentException - if sequenceNumber is negative.

getConnectionId

public String getConnectionId()

The connection ID to which this notification pertains.

Returns:

the connection ID.