Module java.management
Package javax.management.timer

Interface TimerMBean

All Known Implementing Classes:
Timer
public interface TimerMBean
Exposes the management interface of the timer MBean.
Since:
1.5

  • Method Summary

    Modifier and Type
    Method
    Description
    Integer
    addNotification​(String type, String message, Object userData, Date date)
    Creates a new timer notification with the specified type, message and userData and inserts it into the list of notifications with a given date and a null period and number of occurrences.
    Integer
    addNotification​(String type, String message, Object userData, Date date, long period)
    Creates a new timer notification with the specified type, message and userData and inserts it into the list of notifications with a given date and period and a null number of occurrences.
    Integer
    addNotification​(String type, String message, Object userData, Date date, long period, long nbOccurences)
    Creates a new timer notification with the specified type, message and userData and inserts it into the list of notifications with a given date, period and number of occurrences.
    Integer
    addNotification​(String type, String message, Object userData, Date date, long period, long nbOccurences, boolean fixedRate)
    Creates a new timer notification with the specified type, message and userData and inserts it into the list of notifications with a given date, period and number of occurrences.
    Vector<Integer>
    getAllNotificationIDs()
    Gets all timer notification identifiers registered into the list of notifications.
    Date
    getDate​(Integer id)
    Gets a copy of the date associated to a timer notification.
    Boolean
    getFixedRate​(Integer id)
    Gets a copy of the flag indicating whether a periodic notification is executed at fixed-delay or at fixed-rate.
    int
    getNbNotifications()
    Gets the number of timer notifications registered into the list of notifications.
    Long
    getNbOccurences​(Integer id)
    Gets a copy of the remaining number of occurrences associated to a timer notification.
    Vector<Integer>
    getNotificationIDs​(String type)
    Gets all the identifiers of timer notifications corresponding to the specified type.
    String
    getNotificationMessage​(Integer id)
    Gets the timer notification detailed message corresponding to the specified identifier.
    String
    getNotificationType​(Integer id)
    Gets the timer notification type corresponding to the specified identifier.
    Object
    getNotificationUserData​(Integer id)
    Gets the timer notification user data object corresponding to the specified identifier.
    Long
    getPeriod​(Integer id)
    Gets a copy of the period (in milliseconds) associated to a timer notification.
    boolean
    getSendPastNotifications()
    Gets the flag indicating whether or not the timer sends past notifications.
    boolean
    isActive()
    Tests whether the timer MBean is active.
    boolean
    isEmpty()
    Tests whether the list of timer notifications is empty.
    void
    removeAllNotifications()
    Removes all the timer notifications from the list of notifications and resets the counter used to update the timer notification identifiers.
    void
    removeNotification​(Integer id)
    Removes the timer notification corresponding to the specified identifier from the list of notifications.
    void
    removeNotifications​(String type)
    Removes all the timer notifications corresponding to the specified type from the list of notifications.
    void
    setSendPastNotifications​(boolean value)
    Sets the flag indicating whether the timer sends past notifications or not.
    void
    start()
    Starts the timer.
    void
    stop()
    Stops the timer.

  • Method Details

    • start

      void start()
      Starts the timer.

      If there is one or more timer notifications before the time in the list of notifications, the notification is sent according to the sendPastNotifications flag and then, updated according to its period and remaining number of occurrences. If the timer notification date remains earlier than the current date, this notification is just removed from the list of notifications.

    • stop

      void stop()
      Stops the timer.

    • addNotification

      Integer addNotification​(String type, String message, Object userData, Date date, long period, long nbOccurences, boolean fixedRate) throws IllegalArgumentException
      Creates a new timer notification with the specified type, message and userData and inserts it into the list of notifications with a given date, period and number of occurrences.

      If the timer notification to be inserted has a date that is before the current date, the method behaves as if the specified date were the current date.
      For once-off notifications, the notification is delivered immediately.
      For periodic notifications, the first notification is delivered immediately and the subsequent ones are spaced as specified by the period parameter.

      Note that once the timer notification has been added into the list of notifications, its associated date, period and number of occurrences cannot be updated.

      In the case of a periodic notification, the value of parameter fixedRate is used to specify the execution scheme, as specified in Timer.

      Parameters:
      type - The timer notification type.
      message - The timer notification detailed message.
      userData - The timer notification user data object.
      date - The date when the notification occurs.
      period - The period of the timer notification (in milliseconds).
      nbOccurences - The total number the timer notification will be emitted.
      fixedRate - If true and if the notification is periodic, the notification is scheduled with a fixed-rate execution scheme. If false and if the notification is periodic, the notification is scheduled with a fixed-delay execution scheme. Ignored if the notification is not periodic.
      Returns:
      The identifier of the new created timer notification.
      Throws:
      IllegalArgumentException - The date is null or the period or the number of occurrences is negative.
      See Also:
      addNotification(String, String, Object, Date, long, long)

    • addNotification

      Integer addNotification​(String type, String message, Object userData, Date date, long period, long nbOccurences) throws IllegalArgumentException
      Creates a new timer notification with the specified type, message and userData and inserts it into the list of notifications with a given date, period and number of occurrences.

      If the timer notification to be inserted has a date that is before the current date, the method behaves as if the specified date were the current date.
      For once-off notifications, the notification is delivered immediately.
      For periodic notifications, the first notification is delivered immediately and the subsequent ones are spaced as specified by the period parameter.

      Note that once the timer notification has been added into the list of notifications, its associated date, period and number of occurrences cannot be updated.

      In the case of a periodic notification, uses a fixed-delay execution scheme, as specified in Timer. In order to use a fixed-rate execution scheme, use addNotification(String, String, Object, Date, long, long, boolean) instead.

      Parameters:
      type - The timer notification type.
      message - The timer notification detailed message.
      userData - The timer notification user data object.
      date - The date when the notification occurs.
      period - The period of the timer notification (in milliseconds).
      nbOccurences - The total number the timer notification will be emitted.
      Returns:
      The identifier of the new created timer notification.
      Throws:
      IllegalArgumentException - The date is null or the period or the number of occurrences is negative.
      See Also:
      addNotification(String, String, Object, Date, long, long, boolean)

    • addNotification

      Integer addNotification​(String type, String message, Object userData, Date date, long period) throws IllegalArgumentException
      Creates a new timer notification with the specified type, message and userData and inserts it into the list of notifications with a given date and period and a null number of occurrences.

      The timer notification will repeat continuously using the timer period using a fixed-delay execution scheme, as specified in Timer. In order to use a fixed-rate execution scheme, use addNotification(String, String, Object, Date, long, long, boolean) instead.

      If the timer notification to be inserted has a date that is before the current date, the method behaves as if the specified date were the current date. The first notification is delivered immediately and the subsequent ones are spaced as specified by the period parameter.

      Parameters:
      type - The timer notification type.
      message - The timer notification detailed message.
      userData - The timer notification user data object.
      date - The date when the notification occurs.
      period - The period of the timer notification (in milliseconds).
      Returns:
      The identifier of the new created timer notification.
      Throws:
      IllegalArgumentException - The date is null or the period is negative.

    • addNotification

      Integer addNotification​(String type, String message, Object userData, Date date) throws IllegalArgumentException
      Creates a new timer notification with the specified type, message and userData and inserts it into the list of notifications with a given date and a null period and number of occurrences.

      The timer notification will be handled once at the specified date.

      If the timer notification to be inserted has a date that is before the current date, the method behaves as if the specified date were the current date and the notification is delivered immediately.

      Parameters:
      type - The timer notification type.
      message - The timer notification detailed message.
      userData - The timer notification user data object.
      date - The date when the notification occurs.
      Returns:
      The identifier of the new created timer notification.
      Throws:
      IllegalArgumentException - The date is null.

    • removeNotification

      void removeNotification​(Integer id) throws InstanceNotFoundException
      Removes the timer notification corresponding to the specified identifier from the list of notifications.
      Parameters:
      id - The timer notification identifier.
      Throws:
      InstanceNotFoundException - The specified identifier does not correspond to any timer notification in the list of notifications of this timer MBean.

    • removeNotifications

      void removeNotifications​(String type) throws InstanceNotFoundException
      Removes all the timer notifications corresponding to the specified type from the list of notifications.
      Parameters:
      type - The timer notification type.
      Throws:
      InstanceNotFoundException - The specified type does not correspond to any timer notification in the list of notifications of this timer MBean.

    • removeAllNotifications

      void removeAllNotifications()
      Removes all the timer notifications from the list of notifications and resets the counter used to update the timer notification identifiers.

    • getNbNotifications

      int getNbNotifications()
      Gets the number of timer notifications registered into the list of notifications.
      Returns:
      The number of timer notifications.

    • getAllNotificationIDs

      Vector<Integer> getAllNotificationIDs()
      Gets all timer notification identifiers registered into the list of notifications.
      Returns:
      A vector of Integer objects containing all the timer notification identifiers.
      The vector is empty if there is no timer notification registered for this timer MBean.

    • getNotificationIDs

      Vector<Integer> getNotificationIDs​(String type)
      Gets all the identifiers of timer notifications corresponding to the specified type.
      Parameters:
      type - The timer notification type.
      Returns:
      A vector of Integer objects containing all the identifiers of timer notifications with the specified type.
      The vector is empty if there is no timer notifications registered for this timer MBean with the specified type.

    • getNotificationType

      String getNotificationType​(Integer id)
      Gets the timer notification type corresponding to the specified identifier.
      Parameters:
      id - The timer notification identifier.
      Returns:
      The timer notification type or null if the identifier is not mapped to any timer notification registered for this timer MBean.

    • getNotificationMessage

      String getNotificationMessage​(Integer id)
      Gets the timer notification detailed message corresponding to the specified identifier.
      Parameters:
      id - The timer notification identifier.
      Returns:
      The timer notification detailed message or null if the identifier is not mapped to any timer notification registered for this timer MBean.

    • getNotificationUserData

      Object getNotificationUserData​(Integer id)
      Gets the timer notification user data object corresponding to the specified identifier.
      Parameters:
      id - The timer notification identifier.
      Returns:
      The timer notification user data object or null if the identifier is not mapped to any timer notification registered for this timer MBean.

    • getDate

      Date getDate​(Integer id)
      Gets a copy of the date associated to a timer notification.
      Parameters:
      id - The timer notification identifier.
      Returns:
      A copy of the date or null if the identifier is not mapped to any timer notification registered for this timer MBean.

    • getPeriod

      Long getPeriod​(Integer id)
      Gets a copy of the period (in milliseconds) associated to a timer notification.
      Parameters:
      id - The timer notification identifier.
      Returns:
      A copy of the period or null if the identifier is not mapped to any timer notification registered for this timer MBean.

    • getNbOccurences

      Long getNbOccurences​(Integer id)
      Gets a copy of the remaining number of occurrences associated to a timer notification.
      Parameters:
      id - The timer notification identifier.
      Returns:
      A copy of the remaining number of occurrences or null if the identifier is not mapped to any timer notification registered for this timer MBean.

    • getFixedRate

      Boolean getFixedRate​(Integer id)
      Gets a copy of the flag indicating whether a periodic notification is executed at fixed-delay or at fixed-rate.
      Parameters:
      id - The timer notification identifier.
      Returns:
      A copy of the flag indicating whether a periodic notification is executed at fixed-delay or at fixed-rate.

    • getSendPastNotifications

      boolean getSendPastNotifications()
      Gets the flag indicating whether or not the timer sends past notifications.
      Returns:
      The past notifications sending on/off flag value.
      See Also:
      setSendPastNotifications(boolean)

    • setSendPastNotifications

      void setSendPastNotifications​(boolean value)
      Sets the flag indicating whether the timer sends past notifications or not.
      Parameters:
      value - The past notifications sending on/off flag value.
      See Also:
      getSendPastNotifications()

    • isActive

      boolean isActive()
      Tests whether the timer MBean is active. A timer MBean is marked active when the start method is called. It becomes inactive when the stop method is called.
      Returns:
      true if the timer MBean is active, false otherwise.

    • isEmpty

      boolean isEmpty()
      Tests whether the list of timer notifications is empty.
      Returns:
      true if the list of timer notifications is empty, false otherwise.