com.vaadin.collaborationengine

Interface AbstractCollaborationManager.ActivationHandler

All Superinterfaces:

Serializable

Enclosing class:

AbstractCollaborationManager

Functional Interface:

This is a functional interface and can therefore be used as the assignment target for a lambda expression or method reference.

@FunctionalInterface
public static interface AbstractCollaborationManager.ActivationHandler
extends Serializable

The callback executed when the manager is activated, i.e. when the connection to the topic is established.

See Also:

AbstractCollaborationManager.setActivationHandler(ActivationHandler)

Method Summary

Modifier and Type	Method and Description
Registration	onActivation() The method executed when the manager is activated.

Method Detail

onActivation

Registration onActivation()

The method executed when the manager is activated. The method might return a callback which will be invoked when the manager is deactivated, i.e. the connection to the topic is closed. This callback can be used to clean-up resources used during activation.

Returns:

a callback which will be executed when the manager is deactivated, or null if not needed