Suppose you have the following EJB 3 interfaces/classes: public interface Repository<E> { public void delete(E entity); } public abstract class AbstractRepository<E> implements Repository<E> { public void delete(E entity){ //... } } public interface FooRepository<Foo> { //other methods } @Local(FooRepository....
My team is developing a new service oriented product with a web front-end. In discussions about what technologies we will use we have settled on running a JBoss application server, and Flex frontend (with possible desktop deployment using Adobe AIR), and web services to interface the client and server. We've reached an impasse when it ...
Hello, I'm experiencing the following very annoying behaviour when using JPA entitys in conjunction with Oracle 10g. Suppose you have the following entity. @Entity @Table(name = "T_Order") public class TOrder implements Serializable { private static final long serialVersionUID = 2235742302377173533L; @Id @GeneratedValue(...
The scenario You have developed a webapp using EJBs version 3. The system is deployed, delivered and is used by the customer. If you would have to rewrite the system from scratch, would you use EJBs again? No: Don't answer this question, answer this one instead. Yes: Provide one important, real problem that EJBs solved, based on yo...
I have a stateless bean something like: @Stateless public class MyStatelessBean implements MyStatelessLocal, MyStatelessRemote { @PersistenceContext(unitName="myPC") private EntityManager mgr; @TransationAttribute(TransactionAttributeType.SUPPORTED) public void processObjects(List<Object> objs) { // this method ...
The scenario You have developed a webapp using EJBs version 3. The system is deployed, delivered and is used by the customer. If you would have to rewrite the system from scratch, would you use EJBs again? Yes: Don't answer this question, answer this one instead. No: Provide the top reason for not using EJBs again, based on your pe...
Why do I need to specify various driver info when I call a remote EJB? java.naming.factory.initial=org.jnp.interfaces.NamingContextFactory java.naming.factory.url.pkgs=org.jboss.naming:org.jnp.interfaces java.naming.provider.url=localhost:1099 Shouldn't we only need to specify the url/port and the EJB container should resolve all that o...
Hi all I'm working on a project which is just about to start, and since I was busy with another one my colleagues went ahead and started working on the specs to the new one. When I came in, they had just chosen to do persistence with plain SQL (promptly accepted my suggestion to add Hibernate, though) but insisted in that data replicati...
I'm in the process of developing a multi-tiered financial processing application in Java using EJB3 (Hibernate + Glassfish for the app and web services layer, Lift on Glassfish for the web UI) and I'm struggling with the question of where to put my business logic. When this project started, our first notion was to put the bulk of our bu...
I am looking for a tool which would create ejb-jar.xml configuration file from annotated EJB3 classes. Something like XDoclet, but for annotations, not tags in comments. ...
We currently have a web application loading a Spring application context which instantiates a stack of business objects, DAO objects and Hibernate. We would like to share this stack with another web application, to avoid having multiple instances of the same objects. We have looked into several approaches; exposing the objects using JMX...
I have a remote EJB with a method that validates an object (returning true or false). I want to be able to pass it an ArrayList object and have the EJB load it with the errors encountered during validation, while still receiving true/false as result. How can I do this? So far, I can send it the list, and it's affected on server side, bu...
I'm trying to use this method for receiving mail in our EJB3 app. In short, that means creating an MDB with the following annotations: @MessageDriven(activationConfig = { @ActivationConfigProperty(propertyName = "mailServer", propertyValue = "imap.company.com"), @ActivationConfigProperty(propertyName = "mailFolder", propertyValue = ...
I've read the EJB3 spec and the latest O'Reilly and Manning books and yet I can't see defined anywhere how transactions are propagated over multiple session beans. For example, if I call a method marked as "NEVER" on bean A and bean A calls a method marked as REQUIRESNEW on bean B, what happens? In practice, using JBoss, we've observed...
Hi, For one of our projects, I should be able to call a webservice that uses WS-Security, i.e. the SOAP request should be signed with an X.509 certificate. I've been doing some tests to call the webservice through the use of the WebServiceRef annotation and I'm able to call the webservice without WS-Security. So my question is: how can...
I've got a bunch of stateless ejb 3.0 beans calling each other in chain. Consider, BeanA.do(message) -> BeanB.do() -> BeanC.do() -> BeanD.do(). Now i'd like to access message data from BeanD.do(). Obvious solution is to pass message as a parameter to all that do() calls (actually that's how it works now), but i want some nicer solution...
E.g. if I set a timer to expire every day at midnight, what will happen if one "misfire" (does not trigger the callback because the server is down, for instance) ? I can't find that in the documentation. Is there a way to make this timer triggers the callback as soons as the server restart ? PS: I know about Quartz, i'm evaluating EJB ...
I have a webapp with different Dynamic Web Projects, each of them generally containing an EJB Project. We want to keep them interacting, as in using beans and classes from each other's EJBs through JNDI, sharing the same database or using their own. But we also want to be able to keep different projects on different servers. What would ...
I am currently developing an EJB 3.0 based application on the JBoss AS 5.0.0.GA and just recently the following warning showed up in the server log: 09:50:19,735 WARN [InterceptorsFactory] EJBTHREE-1246: Do not use InterceptorsFactory with a ManagedObjectAdvisor, InterceptorRegistry should be used via the bean container 09:50:19,735 W...
I would like to have a JUnit (or other) system where the enterprise beans can be tested in a mock environment so that all resources/beans and so on are injected locally. The enterprise beans should not have to accomplish this. All kinds of injection should be supported. I would like to have a maven plugin for this so that the tests can...