Creating EJB 1.1 Beans

The Bean Wizard in Pramati Studio helps to create EJB version 1.1. This document describes how to create EJB 1.1 modules with ejbHome, ejbFind, and business methods for entity beans with Bean Managed Persistence (BMP) using Bean Wizard. For more information on how to use Bean Wizard and its panels, read `Creating Entity Beans that use CMP 2.0', `Managing Container Managed Relationships in Pramati Studio', and `Creating Entity Beans with BMP 2.0' which describe the procedure for creating EJB 2.0.

Create a new desk and select Template as EJB 1.1 Desk. This template contains a EJB 1.1 module, a JAR and a EAR.

Right click on the desk root and select New Folder > Java Module or New Folder > EJB 1.1 Module as per requirement.

Provide appropriate locations for the modules and click OK to apply settings.

A session bean is a short lived, transaction aware component that is deleted on container crash. Session bean executes on behalf of a single client, and updates shared data in an underlying database. Session beans are of types stateful and stateless. Select Tools > Bean Wizard and provide following details while creating session beans in Expert mode:

Define the type of bean. Select from the dropdown as Session - Stateless, or Session - Stateful. Click Next.

Define Create Methods panel is displayed when the type of bean is selected as Session - Stateful, and transaction type is Bean Managed. Define create methods for the bean. Click Next.

Use Define Business Methods panel to obtain a skeleton code for business methods in the bean. Click Next.

In the Select Bean Interfaces panel, define Home and Remote interface names. Click Next.

Methods to Publish In Interface(s) - Home panel appears when the selected bean is of type Session - Stateful. Selected methods are placed in Home interface. Home and Local Home interfaces for the stateless session beans are created according to EJB specifications. This panel does not appear for Stateless Session beans.

Methods to Publish In Interface(s) - Remote panel displays all pre defined business methods, to be placed in the Remote interfaces. Select as per requirement.

Creating entity beans

An entity bean is a long-lived component that operates in a database on a continuing basis. Entity beans need information on:

Data Connections for beans to persist

Queries to be used by finder methods

Defining Beans: Define the type of bean to be created. The bean can be selected as Entity - Bean Managed, or Entity - Container Managed

Defining Bean or Container Managed Fields that do not use existing database: This panel appears when the bean being created does not use an existing database. Tables in the database can be created after bean creation

Defining Bean or Container Managed Fields that use existing database: This panel appears when the bean being created uses an existing database. Select the option, Use Existing Database in the first panel of Bean Wizard

Define Create Methods: Provide details to define create methods for the bean

Define Business Methods: Define a skeleton code for business methods in the bean

Define Finder Methods: Define a skeleton code for finder methods of entity beans. The method name for finder method created is always prefixed with ejbFind

Select Bean Interfaces: Define Home and Remote interface names to be created along with the bean

Methods to Publish In Interface(s) - Home: This panel is used to select Home interfaces for finder methods created previously. The selected methods are placed in Home interface, after bean creation

Methods to Publish In Interface(s) - Remote: This panel displays all get/set methods defined for CMP beans and also the business methods for BMP and CMP beans defined earlier. Selected methods are placed in Remote interfaces