1. Static fields in Entity Bean coderanch.comSince EJB are distribued objects, only static final read only varialbles are allowed. If you declare a Arraylist as a final static and modify the contents of the list you are viloating the spec because the arraylist in the same EJB in another JVM will *not* see the changes. So whenever using static avraibles use static final and for *read-only* purpose. ... |
2. EJB 3.0 entity bean with mysql coderanch.comHi All, I created a persistance class, and a session bean to presist the data. Below is my persistance.xml file: |
3. Entity Bean Problem coderanch.com |
4. JTA in Entity beans coderanch.com |
5. Session and Entity Bean Flow coderanch.comAm writing what I understood from the sample code I ran in WSAD for stateless session bean. Please correct me if I am wrong. Client(servlet) looks up in the JNDI for the HomeInterface's Object and Gets it back. Then client invokes create method on it. Client gets back the remote interface object and using this object, he invokes the methods in ... |
6. entity bean coderanch.comwhen i deployed an entity bean using jpa.in the jboss server i got this error: 11:59:54,847 ERROR [URLDeploymentScanner] Incomplete Deployment listing: --- MBeans waiting for other MBeans --- ObjectName: jboss.j2ee:ear=book.ear,jar=book.jar,name=BookCatalogBean,service=EJB3 State: NOTYETINSTALLED I Depend On: persistence.units:unitName=EntityBean --- MBEANS THAT ARE THE ROOT CAUSE OF THE PROBLEM --- ObjectName: persistence.units:unitName=EntityBean State: NOTYETINSTALLED Depends On Me: jboss.j2ee:ear=book.ear,jar=book.jar,name=BookCatalogBean,service=EJB3 11:59:54,939 INFO [Http11Protocol] Starting Coyote HTTP/1.1 ... |
7. Session Beans emulationg Entity Beans coderanch.comAn Entity EJB is a temporary object-oriented representation of a business record (aka a record in a relational database). The record in the database is a representation of a business entity, e.g. account, customer, product, etc. A Session EJB represents a business process that involves zero or more (business entities | records | Entity EJB). To understand the transactional nature of ... |
8. Doubts in BMP Entity Bean coderanch.com |
9. Entity Beans Life coderanch.com |
11. Can an Entity Bean be an Asyncronous Queue Consumer? coderanch.com |
12. Proble with Relationship in Entity Bean coderanch.com |
13. Entity Bean 2.1 : Get column names coderanch.com |
14. Inheritance in Entity bean coderanch.comI have a query regarding the entity bean. I am developing an application in which I am representing the "Card" as an entity bean. Since a card can be fall into different types like "Credit Card", "Debit Card" and etc.. Debit, credit or other card will have some common featutes like card expiry date, card issued by, and others. So I ... |
15. Locking with Entity Beans coderanch.com |
16. Entity Bean Vs SQLNET.EXPIRE_TIME coderanch.comLimitations on using this terminated connection detection feature are: * It is not allowed on bequeathed connections. * Though very small, a probe packet generates additional traffic that may downgrade network performance. * Depending on which operating system is in use, the server may need to perform additional processing to distinguish the connection probing event from other events that occur. This ... |
17. EJB3 Entity Bean won't verify with Netbeans coderanch.comI am working with Netbeans 6.7.1 alongside a Glassfish server 2.1. Java 1.6 is in the system I have an enterprise application with a web application with a jsp page, and a session bean. These guys are fine. Now I am trying to create an Entity Bean persisting on the Derby DB in the Glassfish server. My Persistence Unit is "MyPu" ... |
18. EJB3 entity bean coderanch.comcan some one guide in writing a simple EJB3 entity bean without using Hibernate on JBoss with MySQL. Basically I am not able to understand how to write the persistence.xml and mysql-ds.xml. Regards Jason BookEntity.java ========== package com.jason; import javax.persistence.Column; import javax.persistence.Entity; import javax.persistence.GeneratedValue; import javax.persistence.GenerationType; import javax.persistence.Id; import javax.persistence.Table; @Entity @Table(name = "book") public class BookEntity implements java.io.Serializable { public ... |
19. When to use session Beans and when to use entity Beans coderanch.com |
20. Are ENtity Beans are deprecated in 3.0 version coderanch.com |
21. Regarding batch updates in entity bean coderanch.com |
22. Why is the need of Entity Beans coderanch.comHi, I dont understand why there is a need of entity beans. Well entity beans represent the OO representation of the data but it is an unnecessary overhead on the memory as the entiy beans as objects will be created on the heap. I can place the JDBC code directly within the session beans. I understand tha for that sake I ... |
23. are entity beans EJB3? coderanch.com |
24. jboss and entity bean, javax.naming.NoInitialContextException coderanch.com |
25. Container Managed Entity beans are giving duplicate primary key on heavy load. coderanch.comHi All, In our application we are using container managed entity beans for generating primary keys. We are using ejbLoad() for selecting and ejbStore() for incrementing the primary key. This works fine on normal load conditions, but on heavy loads entity beans are generating duplicate keys. We have clustered production enviornment. Below is the Key Generation code: public class KeyEntityBean extends ... |
26. Local Entity Bean not bound in EJB 2.1 on JBoss 4.2.3 server coderanch.comHello All, I have coded a small application that deals with stateless and entity beans. Stateless bean calls the local interfaces of the entity bean. I'm deploying this in JBoss 4.2.3 bean and below are my config files JBoss.xml |
27. EJB 3.0 Entity Beans coderanch.com |
28. Entity bean 'wsPessimisticUpdate-Exclusive' in Java coderanch.com |
29. Entity beans validation, how to know what constraint is being violated? coderanch.com |
30. Relationships among entity beans defined in separate EJB projects coderanch.comHi all, My application architecture involves separate EJB projects for separate modules. Each of these projects are deployed as separate EJB jar files in my application server. Each project has a particular structure, with entity beans, session beans and some utility classes defined and each having its own persistence.xml file. I want to define cross project relationships among the entity beans. ... |
31. My Entity beans are not saved (stored) on data base coderanch.comHi, I work with Ejb2.1, oc4j et xdoctlet. I have a problem with my entity beans CMP: Context ctx = new InitialContext(properties); Object objref = ctx.lookup ("My"); home = (MyHome) PortableRemoteObject.narrow ( objref, MyHome.class ) ; home.create(BigDecimal.valueOf(5), BigDecimal.valueOf(54)); In this case my bean is created and i can manipulate it but it is not stored on data base. if i look ... |
32. how to use an entity bean from my j2ee project (ECLIPSE + JBOSS + MYSQL) coderanch.com |
33. Atomic operation of two entity invocations from a session bean coderanch.comHi, I have a Stateless Session Bean which does the following: ******Inside the business method************* boolean entityBeanExists = find an entity bean if (entityBeanExists == false) create the entity bean ****************************************** Now, I want above operations to be atomic. I don't want two simultaneous calls from 2 instances of the Pooled Stateless Bean to execute this code and create two instances ... |
34. Multithreaded Java SE application using Entity Beans coderanch.comI am fairly familiar with entity beans but I have only used them with an EJB container. I have a SE application that uses an EntityManagerFactory to create an entity manager. I would like to multithread this application but I am very confused about using Entity Beans with multiple threads. Here is a small example of the entites and what the ... |
35. EJB Netbeans: Entity Beans coderanch.com |