Your problem is that you misunderstand the purpose of the servlet. It’s intented to act on HTTP requests, nothing more. You want just a background task which runs once on daily basis. EJB available? Use @Schedule If your environment happen to support EJB (i.e. a real Java EE server such as WildFly, JBoss, TomEE, Payara, … Read more
In a servlet based artifact, such as @WebServlet, @WebFilter and @WebListener, you can grab a “plain vanilla” JSF @ManagedBean @RequestScoped by: Bean bean = (Bean) request.getAttribute(“beanName”); and @ManagedBean @SessionScoped by: Bean bean = (Bean) request.getSession().getAttribute(“beanName”); and @ManagedBean @ApplicationScoped by: Bean bean = (Bean) getServletContext().getAttribute(“beanName”); Note that this prerequires that the bean is already autocreated by … Read more
using Hibernate you can do @ElementCollection(targetElement = InterestsEnum.class) @JoinTable(name = “tblInterests”, joinColumns = @JoinColumn(name = “personID”)) @Column(name = “interest”, nullable = false) @Enumerated(EnumType.STRING) Collection<InterestsEnum> interests;
Your question is similar to below: What is the difference between application server and web server? In Java: Web Container or Servlet Container or Servlet Engine : is used to manage the components like Servlets, JSP. It is a part of the web server. Web Server or HTTP Server: A server which is capable of … Read more
I think you should use your (fully qualified) Status enum instead of literal value, so something like this: (assuming your Status enum is in com.myexample package) @NamedQuery(name = “Question.allApproved”, query = “SELECT q FROM Question q WHERE q.status = com.myexample.Status.APPROVED”).
A simple comparison against string works: <c:when test=”${someModel.status == ‘OLD’}”>
First of all let me do some clarifications: Managed bean definition : generally a managed bean is an object that its life cycle (construction, destruction, etc) is managed by a container. In Java ee we have many containers that manage life cycle of their objects, like JSF container, EJB container, CDI container, Servlet container, etc. … Read more
Why does JSF need to save the state of UI components on the server side ? Because HTTP is stateless and JSF is stateful. The JSF component tree is subject to dynamic (programmatic) changes. JSF simply needs to know the exact state as it was when the form had been displayed to the enduser, so … Read more
Use CDI. As per JSF 2.3, @ManagedBean is deprecated. See also spec issue 1417. This means that there’s not anymore a reason to choose @ManagedBean over @Named. This was first implemented in Mojarra 2.3.0 beta version m06. Since Faces 4.0, the @ManagedBean has been removed as per spec issue 1547. History The core difference is, … Read more
Very simple solution to the problem when your NetBeans or Eclipse IDE seems to be using too much memory: Disable the plugins you are not using. close the projects you are not working on. I was facing similar problem with Netbeans 7.0 on my Linux Mint as well Ubuntu box. Netbeans was using > 700 … Read more