Enum Class TreeCacheEvent.Type
- All Implemented Interfaces:
Serializable
,Comparable<TreeCacheEvent.Type>
,Constable
- Enclosing class:
- TreeCacheEvent
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Nested Class Summary
Nested classes/interfaces inherited from class java.lang.Enum
Enum.EnumDesc<E extends Enum<E>>
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Enum Constant Summary
Enum ConstantsEnum ConstantDescriptionCalled when the connection has changed toConnectionState.LOST
Called when the connection has changed toConnectionState.RECONNECTED
Called when the connection has changed toConnectionState.SUSPENDED
Posted after the initial cache has been fully populated.A node was added.A node was removed from the treeA node's data was changed -
Method Summary
Modifier and TypeMethodDescriptionstatic TreeCacheEvent.Type
Returns the enum constant of this class with the specified name.static TreeCacheEvent.Type[]
values()
Returns an array containing the constants of this enum class, in the order they are declared.
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Enum Constant Details
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NODE_ADDED
A node was added. -
NODE_UPDATED
A node's data was changed -
NODE_REMOVED
A node was removed from the tree -
CONNECTION_SUSPENDED
Called when the connection has changed toConnectionState.SUSPENDED
This is exposed so that users of the class can be notified of issues that *might* affect normal operation. The TreeCache is written such that listeners are not expected to do anything special on this event, except for those people who want to cause some application-specific logic to fire when this occurs. While the connection is down, the TreeCache will continue to have its state from before it lost the connection and after the connection is restored, the TreeCache will emit normal child events for all of the adds, deletes and updates that happened during the time that it was disconnected.
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CONNECTION_RECONNECTED
Called when the connection has changed toConnectionState.RECONNECTED
This is exposed so that users of the class can be notified of issues that *might* affect normal operation. The TreeCache is written such that listeners are not expected to do anything special on this event, except for those people who want to cause some application-specific logic to fire when this occurs. While the connection is down, the TreeCache will continue to have its state from before it lost the connection and after the connection is restored, the TreeCache will emit normal child events for all of the adds, deletes and updates that happened during the time that it was disconnected.
After reconnection, the cache will resynchronize its internal state with the server, then fire a
INITIALIZED
event. -
CONNECTION_LOST
Called when the connection has changed toConnectionState.LOST
This is exposed so that users of the class can be notified of issues that *might* affect normal operation. The TreeCache is written such that listeners are not expected to do anything special on this event, except for those people who want to cause some application-specific logic to fire when this occurs. While the connection is down, the TreeCache will continue to have its state from before it lost the connection and after the connection is restored, the TreeCache will emit normal child events for all of the adds, deletes and updates that happened during the time that it was disconnected.
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INITIALIZED
Posted after the initial cache has been fully populated.On startup, the cache synchronizes its internal state with the server, publishing a series of
NODE_ADDED
events as new nodes are discovered. Once the cachehas been fully synchronized, thisINITIALIZED
this event is published. All events published after this event represent actual server-side mutations.On reconnection, the cache will resynchronize its internal state with the server, and fire this event again once its internal state is completely refreshed.
Note: because the initial population is inherently asynchronous, so it's possible to observe server-side changes (such as a
NODE_UPDATED
) prior to this event being published.
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Method Details
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values
Returns an array containing the constants of this enum class, in the order they are declared.- Returns:
- an array containing the constants of this enum class, in the order they are declared
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valueOf
Returns the enum constant of this class with the specified name. The string must match exactly an identifier used to declare an enum constant in this class. (Extraneous whitespace characters are not permitted.)- Parameters:
name
- the name of the enum constant to be returned.- Returns:
- the enum constant with the specified name
- Throws:
IllegalArgumentException
- if this enum class has no constant with the specified nameNullPointerException
- if the argument is null
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