ejb-3.0

What are the differences between entity beans which are in the EJB 2.0 specification and entity classes which in the 3.0 specification? Santosh Kumar Arjunan In EJB 2, entity was a bean meaning that it had to live in a container and need to be managed (similar to other beans, say stateful, stateless, message driven beans). However in EBJ 3.x, entity is a POJO class - meaning that it can live outside container also.. plain java application can make use of entities as ORM layer with any providers supporting it.. 来源： https://stackoverflow.com/questions/37524680/difference-between-entity-bean-and

I'm currently "rearranging" my Java EE application, which consists of three components: MyAppInterface: mostly JPA- and JAXB-annotated POJOs, also some EJB Local Interfaces MyAppServer: JPA Facades, EJBs, Jersey resources MyAppWeb: GWT frontend, communicates with MyAppServer via HTTP/REST via loadbalancer Both MyAppServer and MyAppWeb use the classes defined in MyAppInterface; MyAppServer "exports" some of its EJBs via local interfaces in MyAppInterface. MyAppInterface is kind of the API, it's what you need to work with MyAppServer. In Maven I am packaging MyAppInterface as jar , both

I have defined a session bean base class. This class is abstract and contains protected final methods. A session implementation class extends the abstract class and defines additional methods. During deployment, Glassfish 3.1.2 server generates an exception stating that method is overridden. abstract class AbstractSessionBean { @PersistenceContext(unitName="primary") private EntityManager em; protected final EntityManager getEntityManager() { return em; } } @Startup @Stateless class RegistrationSessionBean extends AbstractSessionBean { public void loadRegistration() { ... } } During deployment

I have a question related with possible performance issue while using @EJB annotation. Imagine following scenario public class MyBean1 implements MyBean1Remote{ @EJB private MyBean2Remote myBean2; @EJB private MyBean2Remote myBean3; ... @EJB private MyBean20Remote myBean20; } There is a bean with many dependencies to other beans. According to EJB spec if I would like to inject MyBean1Remote to some other bean, container would have to take all required dependencies from its pool inject it into MyBean1Remote and then inject reference to MyBean1Remote stub. so in following scenario container

I've configured the message destination type, name etc using @ActivationConfigProperty in EJB 3.0 but I wanted to configure the MDB using deployment descriptor ( ejb-jar.xml ) as in EJB 2.0. FYI: I'm using JBoss 6 Can anyone guide me on this? Adheep Mohamed Abdul Kader Thanks man, but I've figured it out in a much simpler way. Below is the code <ejb-jar id="ejb-jar_ID" version="3.1" xmlns="http://java.sun.com/xml/ns/javaee" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/ejb-jar_3_1.xsd"> <display

I'm new to the @Schedule annotations in J2EE6 I want to run a job using EJB 3.x with Glassfish 3.1. The javax.ejb.Schedule seems to be a good choice for us, so we could think of our custom time as something like: @Singleton public class CustomTimer { @EJB SettingsFacade settingsFacade; @Schedule(second="someSecondParameter", minute="someMinuteParameter",hour="someHourParameter", persistent=false) public void executeTimer(){ //Code executing something against database using the settingsFacade } } Here, we want the parameters to be got from database, so they are changed every month. Any clean