Sam Brannen
ff1e5a87b3
Prior to this commit, there was no way to differentiate between an ApplicationContext "start" and "restart" in terms of events. This was due to the fact that a ContextStartedEvent was fired for both AbstractApplicationContext.start() and AbstractApplicationContext.restart(). To assist developers who may wish to differentiate between "start" and "restart" events, this commit introduces a new ContextRestartedEvent as a subtype of ContextStartedEvent. In addition, AbstractApplicationContext.restart() now publishes a ContextRestartedEvent instead of a ContextStartedEvent. By making ContextRestartedEvent a subtype of ContextStartedEvent, applications can still expect ContextStoppedEvent/ContextStartedEvent event pairs for consistent lifecycle semantics, and they can optionally check if the ContextStartedEvent is a ContextRestartedEvent. Alternatively, applications can explicitly react to a ContextRestartedEvent. See gh-35168 See gh-35171 Closes gh-35194
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