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2.3.6.5 Event::EventDurability

Abstract

This section discusses EventDurability, a type defined by the Event class.

Description.  The values of this type are used to describe an event's lifetime or persistence as well as its scope.

Enumeration values.  Possible values are shown, along with descriptions, in the following table:

Table 2.13 Event::EventDurability data type values and descriptions

Name Description
ED_UNDEFINED The event is undefined or of an unsupported type.
ED_SESSION This event persists only for the duration of the current session, and is available only to the current application. It is deleted after the application disconnects or following a cluster restart.
Important

The value ED_SESSION is reserved for future use and is not yet supported in any NDB Cluster release.

ED_TEMPORARY Any application may use the event, but it is deleted following a cluster restart.
Important

The value ED_TEMPORARY is reserved for future use and is not yet supported in any NDB Cluster release.

ED_PERMANENT Any application may use the event, and it persists until deleted by an application—even following a cluster. restart
Important

The value ED_PERMANENT is reserved for future use and is not yet supported in any NDB Cluster release.



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