Enum DatabaseChangeNotificationType

All Implemented Interfaces:
Serializable, Comparable<DatabaseChangeNotificationType>

public enum DatabaseChangeNotificationType extends Enum<DatabaseChangeNotificationType>
Configures what type of database change notification an entity/descriptor should use. This is only relevant if the persistence unit/session has been configured with a DatabaseEventListener, such as the OracleChangeNotificationListener that receives database change events. This allows for the EclipseLink cache to be invalidated or updated from database changes.
See Also:
James Sutherland
  • Enum Constant Details

    • NONE

      public static final DatabaseChangeNotificationType NONE
      No database change events will be processed.

      public static final DatabaseChangeNotificationType INVALIDATE
      Invalidates the EclipseLink cache when a database change event is received for an object. This requires a DatabaseEventListener to be configured with the persistence unit or session. This requires that the database change can be determine to affect the object, some database change events, such as the OracleChangeNotificationListener (Oracle DCN/QCN) only give the ROWID, so changes to secondary table or relationships may not be able to be determined to affect and object unless its version is also changed.
  • Method Details

    • values

      public static DatabaseChangeNotificationType[] values()
      Returns an array containing the constants of this enum type, in the order they are declared.
      an array containing the constants of this enum type, in the order they are declared
    • valueOf

      public static DatabaseChangeNotificationType valueOf(String name)
      Returns the enum constant of this type with the specified name. The string must match exactly an identifier used to declare an enum constant in this type. (Extraneous whitespace characters are not permitted.)
      name - the name of the enum constant to be returned.
      the enum constant with the specified name
      IllegalArgumentException - if this enum type has no constant with the specified name
      NullPointerException - if the argument is null