com.vaadin.server.SessionInitListener API 8.27.7 | Vaadin

com.vaadin.server.

All Superinterfaces:

Serializable

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 interface SessionInitListener
extends Serializable
```
Event listener that can be registered to a VaadinService to get an event when a new Vaadin service session is initialized for that service.
Because of the way different service instances share the same session, the listener is not necessarily notified immediately when the session is created but only when the first request for that session is handled by a specific service.

Since:

7.0.0

Author:

Vaadin Ltd

See Also:

VaadinService.addSessionInitListener(SessionInitListener)

- Method Summary
  
  All Methods
  Modifier and Type Method Description
  
  void sessionInit(SessionInitEvent event)
  Invoked when a new Vaadin service session is initialized for that service.

- Method Detail
  - sessionInit
```
void sessionInit(SessionInitEvent event)
          throws ServiceException
```
    Invoked when a new Vaadin service session is initialized for that service.
    Because of the way different service instances share the same session, the listener is not necessarily notified immediately when the session is created but only when the first request for that session is handled by a specific service.
    
    Parameters:
    
    event - the initialization event
    
    Throws:
    
    ServiceException - a problem occurs when processing the event