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:
Type | Meaning |
---|---|
jmx.remote.connection.opened | A new client connection has been opened. |
jmx.remote.connection.closed | A client connection has been closed. |
jmx.remote.connection.failed | A client connection has failed unexpectedly. |
jmx.remote.connection.notifs.lost | A client connection has potentially lost notifications. This notification only appears on the client side. |
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
Modifier and Type | Field | Description |
---|---|---|
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 declared in class javax.management.Notification
source
Constructor Summary
Constructor | Description |
---|---|
JMXConnectionNotification(String type,
Object source,
String connectionId,
long sequenceNumber,
String message,
Object userData) | Constructs a new connection notification. |
Method Summary
Modifier and Type | Method | Description |
---|---|---|
String | getConnectionId() | The connection ID to which this notification pertains. |
Methods declared in class javax.management.Notification
getMessage, getSequenceNumber, getTimeStamp, getType, getUserData, setSequenceNumber, setSource, setTimeStamp, setUserData, toString
Methods declared in class java.util.EventObject
getSource
Methods declared in 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
Constructor Detail
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 ofJMXConnectorServer
. - 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 constantsOPENED
,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 previoussequenceNumber
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
- iftype
,source
, orconnectionId
is null. -
IllegalArgumentException
- ifsequenceNumber
is negative.
Method Detail
getConnectionId
public String getConnectionId()
The connection ID to which this notification pertains.
- Returns:
- the connection ID.