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Tutorial
320

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
317

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
60

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
Tutorial
44

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
44

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
41

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
Tutorial
36

Step 4: Add a Servlet Class

javax.ejb.EJB; import javax.servlet.ServletException; import javax.servlet.annotation.WebServlet ... ; // Injected DAO EJB: @EJB GuestDao guestDao; @Override protected void doGet ... automatically (since the field is marked with the @EJB annotation). The next step is adding a JSP
Tutorial
36

Step 4: Add a Servlet Class

; import java.io.IOException; import javax.ejb.EJB; import javax.servlet.ServletException ... final long serialVersionUID = 1L; // Injected DAO EJB: @EJB GuestDao guestDao ... the application server into the guestDao field automatically (since the field is marked with the @EJB
Forum
28

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
27

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