Introduction The ViewExpiredException will be thrown whenever the javax.faces.STATE_SAVING_METHOD is set to server (default) and the enduser sends a HTTP POST request on a view via <h:form> with <h:commandLink>, <h:commandButton> or <f:ajax>, while the associated view state isn’t available in the session anymore. The view state is identified as value of a hidden input field … Read more
<p:commandXxx process> <p:ajax process> <f:ajax execute> The process attribute is server side and can only affect UIComponents implementing EditableValueHolder (input fields) or ActionSource (command fields). The process attribute tells JSF, using a space-separated list of client IDs, which components exactly must be processed through the entire JSF lifecycle upon (partial) form submit. JSF will then … Read more
<ui:include> Most basic way is <ui:include>. The included content must be placed inside <ui:composition>. Kickoff example of the master page /page.xhtml: <!DOCTYPE html> <html lang=”en” xmlns=”http://www.w3.org/1999/xhtml” xmlns:f=”http://xmlns.jcp.org/jsf/core” xmlns:h=”http://xmlns.jcp.org/jsf/html” xmlns:ui=”http://xmlns.jcp.org/jsf/facelets”> <h:head> <title>Include demo</title> </h:head> <h:body> <h1>Master page</h1> <p>Master page blah blah lorem ipsum</p> <ui:include src=”/WEB-INF/include.xhtml” /> </h:body> </html> The include page /WEB-INF/include.xhtml (yes, this is the … Read more
Actually, all of those examples on the web wherein the common content/file type like “js”, “css”, “img”, etc is been used as library name are misleading. Real world examples To start, let’s look at how existing JSF implementations like Mojarra and MyFaces and JSF component libraries like PrimeFaces and OmniFaces use it. No one of … Read more
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
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
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