public static class TopicTreeHandler.Default extends Object implements TopicTreeHandler
The methods on this handler log callbacks at debug level.
TopicTreeHandler.Default| Constructor and Description |
|---|
Default() |
| Modifier and Type | Method and Description |
|---|---|
void |
onClose(String topicPath)
Called if the handler is closed.
|
void |
onError(String topicPath,
ErrorReason errorReason)
Notification of a contextual error related to this handler.
|
void |
onRegistered(String topicPath,
Registration registration)
Called when the handler has been successfully registered with the server.
|
public void onRegistered(String topicPath, Registration registration)
TopicTreeHandler
A session can register a single handler of each type for a given branch
of the topic tree. If there is already a handler registered for the topic
path the operation will fail, registration will be closed,
and the session error handler will be notified. To change the handler,
first close the previous handler.
onRegistered in interface TopicTreeHandlertopicPath - the path that the handler is active forregistration - allows the handler to be closedpublic void onClose(String topicPath)
TopicTreeHandlerclose.
No further calls will be made for the handler.
onClose in interface TopicTreeHandlertopicPath - the branch of the topic tree for which the handler was
registeredpublic void onError(String topicPath, ErrorReason errorReason)
TopicTreeHandleronError is called include the session being closed before the
handler is registered, a communication timeout, or a problem with the
provided parameters. No further calls will be made to this handler.onError in interface TopicTreeHandlertopicPath - the branch of the topic tree for which the handler was
registerederrorReason - a value representing the error; this can be one of
constants defined in ErrorReason, or a feature-specific
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