1. Developer's Guide
  2. Continuous Query Notification Classes
  3. OracleNotificationEventArgs Class
  4. OracleNotificationEventArgs Properties
  5. Source

Source

This property returns the database event source for the notification.

Declaration

// C#
public OracleNotificationSource Source{get;}

Property Value

The OracleNotificationSource value for the notification.

Remarks

The OracleNotificationSource value is an enumeration type. If several event sources are received from the notification message, the Source property is set to one of the OracleNotificationSource enumeration values related to the database event source. For example, if a table has been altered (by the ALTER TABLE command) and a new row has been inserted into the same table, the Source property is set to either OracleNotificationSource.Object or OracleNotificationSource.Data.

For Continuous Query Notification:

  • When the Source property is set to OracleNotificationSource.Data:

    • The Info property is set to one of the following:

      • OracleNotificationInfo.Insert

      • OracleNotificationInfo.Delete

      • OracleNotificationInfo.Update

    • The ResourceNames property is set, and the elements are set to the invalidated object names.

    • The Details property contains detailed information on the change of each invalidated table.

  • When the Source property is set to OracleNotificationSource.Database:

    • The Info property is set to one of the following:

      • OracleNotificationInfo.Startup

      • OracleNotificationInfo.Shutdown

      • OracleNotificationInfo.Shutdown_Any

      • OracleNotificationInfo.Dropped

  • When the Source property is set to OracleNotificationSource.Object:

    • The Info property is set to either OracleNotificationInfo.Altered or OracleNotificationInfo.Dropped.

    • The ResourceNames property is set, and the array elements of the ResourceNames property are set to the object names that have been altered or dropped.

    • The Details property contains detailed information on the changes of the object.

  • When the Source property is set to OracleNotificationSource.Subscription:

    • The Info property is set to the following:

      • OracleNotificationInfo.End

See Also: