How and when is a @ViewScoped bean destroyed in JSF?

by

It will be destroyed when

  • a postback with a non-null outcome is been performed,

  • or, the number of (logical) views in session has exceeded and the particular view is the first one in LRU chain (in Mojarra, that’s configureable by com.sun.faces.numberOfViewsInSession and com.sun.faces.numberOfLogicalViews context parameters, each with a default value of 15),

  • or, the number of actieve view scopes in session has exceeded (in Mojarra, that’s a hardcoded limit of 25), see also JSF 2.2 Memory Consumption: Why does Mojarra keep the ViewScoped Beans of the last 25 Views in Memory?

  • or, the session has expired.

It will thus not be destroyed when the page is unloaded as result of clicking a GET link to another page, or refreshing the page, or closing the browser tab/window. The bean will live as long until one of abovelisted conditions is met. To destroy it during unload anyway, consider using OmniFaces @ViewScoped instead.

More Related Contents:

  1. How to choose the right bean scope?
  2. Get JSF managed bean by name in any Servlet related class
  3. @ViewScoped calls @PostConstruct on every postback request
  4. How do I process GET query string URL parameters in backing bean on page load?
  5. ViewParam vs @ManagedProperty(value = “#{param.id}”)
  6. How to replace @ManagedBean / @ViewScope by CDI in JSF 2.0/2.1
  7. JSF does not populate @Named @RequestScoped bean with submitted input values
  8. How detect and remove (during a session) unused @ViewScoped beans that can’t be garbage collected
  9. How can I get a message bundle string from inside a managed bean?
  10. Identifying and solving javax.el.PropertyNotFoundException: Target Unreachable
  11. Differences between action and actionListener
  12. How to use PrimeFaces p:fileUpload? Listener method is never invoked or UploadedFile is null / throws an error / not usable
  13. Difference between h:button and h:commandButton
  14. How implement a login filter in JSF?
  15. Localization in JSF, how to remember selected locale per session instead of per request/view
  16. Execution order of events when pressing PrimeFaces p:commandButton
  17. How to load and display dependent h:selectOneMenu on change of a h:selectOneMenu
  18. How to set converter properties for each row/item of h:dataTable/ui:repeat?
  19. @ViewScoped bean recreated on every postback request when using JSF 2.2
  20. Redirect to external URL in JSF
  21. How to update Mojarra version in GlassFish
  22. Running JSF 2.0 on Servlet 2.4 container
  23. Adding faces message to redirected page using ExternalContext.redirect()
  24. How create a custom converter in JSF 2?
  25. JSF View scope in Spring
  26. Primefaces valueChangeListener or
  27. h:commandButton not working inside h:dataTable
  28. @PreDestroy never called on @ViewScoped [duplicate]
  29. Initialize a composite component based on the provided attributes
  30. JSF 2 dataTable row index without dataModel

Leave a Comment