About EJB

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Tutorial
394

Step 3: Define an EJB Session Bean

Operations on the database will be performed by an instance of a session bean (EJB) class ... ) > Session Bean and clicking Next. Enter GuestDao as the EJB class name - use exactly that case sensitive class name. The Java package name should be guest. Click Finish to create the new session bean (EJB
Tutorial
392

Step 3: Define an EJB Session Bean

Operations on the database will be performed by an instance of a session bean (EJB) class ... the new session bean (EJB) class. Now replace the content of the new source file with the following code: package guest; import java.util.List; import javax.ejb.Stateless; import javax
Tutorial
54

Java EE 6 Web Tutorial

This tutorial demonstrates how to create and run a full Java EE 6 MVC (Model View Controller) web application using GlassFish, ObjectDB and JPA. Since this web application uses Java EE 6 EJB (session beans) it requires a full Java EE 6 application server, such as GlassFish 3.0.1 or JBoss AS 6
Forum
52

system exception occurred during an invocation on EJB GuestDao

during an invocation on EJB GuestDao, method: public java.util.List guest.GuestDao.getAllGuests() 2014-09-01T19:09:01.324+0200|Avertissement: javax.ejb.EJBException at com.sun.ejb.containers ... .ejb.containers.EJBContainerTransactionManager.completeNewTx(EJBContainerTransactionManager.java:698
Forum
40

ObjectDB with JRebel: copious 'Not Enhanced:' errors with EJBs

log output for nearly every @EJB on startup. Typical message is like: Info: [2016-10-30 09:16:46 #6 enhancer.agent] Not Enhanced: com/example/ejb/query/__EJB31_Generated__ExampleQuery__Intf__: com.objectdb.o.TEX: Type com.example.ejb.query.__EJB31_Generated__ExampleQuery__Intf__ is not found
Issue
38

Once served to JSF page via @EJB query bean, many list fields are null (but same query ok after fresh persist in @PostConstruct)

via a querying @EJB gives many fields null (and not even empty, I mean truly null). In the following ... . When I serve the query via and @EJB TestQuery and @RequestScoped Page JSF to a simple XHTML page ... either empty or populated are served as null (!). The query is performed by an @EJB: @Stateless public class
Tutorial
38

Eclipse/JPA Java EE 6 Tutorial

Step by step tutorial that demonstrates how to build a simple Java EE web application (with Servlet, JSP and an EJB Session Bean) in Eclipse using JPA.
Tutorial
38

NetBeans/JPA Java EE 6 Tutorial

Step by step tutorial that demonstrates how to build a simple Java EE web application (with Servlet, JSP and an EJB Session Bean) in NetBeans using JPA.
Forum
38

How to package orm.xml when using EJB in WAR?

when the (EJB) project is built. When that EJB is deployed to e.g. GlassFish 3.1.1 all apperar to be OK ... to the database EJB is built and deployed, this error message pops up: Caused by: com.objectdb.o ... project that depends on the EJB .. but it's not great to have duplicate copies of the file, and this isn't
Forum
36

Issue deploying EJB project to Jboss/Glassfish

I have been trying to deploy an EJB project created in Eclipse/Juno to both JBOSS and Glassfish.  The error I get with Glassfish is cannot Deploy HappyThought Deployment Error for module: HappyThought: Error occurred during deployment: Exception while preparing the app : java.lang