jsf-2

commandButton/commandLink/ajax action/listener method not invoked or input value not set/updated

by

Introduction Whenever an UICommand component (<h:commandXxx>, <p:commandXxx>, etc) fails to invoke the associated action method, or an UIInput component (<h:inputXxx>, <p:inputXxxx>, etc) fails to process the submitted values and/or update the model values, and you aren’t seeing any googlable exceptions and/or warnings in the server log, also not when you configure an ajax exception handler … Read more

How to choose the right bean scope?

by

Introduction It represents the scope (the lifetime) of the bean. This is easier to understand if you are familiar with “under the covers” working of a basic servlet web application: How do servlets work? Instantiation, sessions, shared variables and multithreading. @Request/View/Flow/Session/ApplicationScoped A @RequestScoped bean lives as long as a single HTTP request-response cycle (note that … Read more

Differences between action and actionListener

by

actionListener Use actionListener if you want have a hook before the real business action get executed, e.g. to log it, and/or to set an additional property (by <f:setPropertyActionListener>), and/or to have access to the component which invoked the action (which is available by ActionEvent argument). So, purely for preparing purposes before the real business action … Read more

tech