Oracle8i Enterprise JavaBeans Developer's Guide and Reference Release 3 (8.1.7) Part Number A83725-01

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Contents

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Preface

1 Overview

About Enterprise JavaBeans

EJB Development Roles

Oracle8i EJB Implementation Features

RMI over IIOP

IIOP Transport Protocol

JNDI

Stateful and Stateless Session Beans

Implementing an EJB

Basic Concepts

Types of EJBs

Session Beans

Entity Beans

2 Enterprise JavaBeans

Invoking Enterprise JavaBeans

Creating Enterprise JavaBeans

Requirements for Remote and Home Interface Implementation

Creating the Remote Interface

Creating the Home Interface

Creating the Exception Class

Implementing the Bean

Interface Implemented

Bean Implementation Example

Developing Your Client Application

Using the getEJBHome Method

Parameter Passing

A Parameter Object

The Client Code

Deploying an EJB

Deployment Steps

Write the Deployment Descriptor

Create the Oracle Deployment Map File

Create a JAR File

Publish the Home Interface

Dropping an EJB

Run the Example

Programming Restrictions

Debugging Techniques

Using a Debug Agent for Debugging Server Applications

3 Configuring IIOP Applications

Overview

Oracle8i Typical or Minimal Installation

Oracle8i Custom Installation

Manual Install and Configuration

Configuring Through Tools

Configuring Through Editing Initialization Files

Advanced Configuration Options

Database Listeners and Dispatchers

Dynamic Listener Endpoint Registration

Direct Dispatcher Connection

Configuring SSL for EJB and CORBA

4 Entity Beans

Definition of an Entity Bean

Managing Persistent Data

Uniquely Identified by a Primary Key

Performing Complex Logic Involving Dependent Objects

Difference Between Session and Entity Beans

Implementing Callback Methods

Using ejbCreate and ejbPostCreate

Using setEntityContext

Using ejbRemove

Using ejbStore and ejbLoad

Creating Entity Beans

Home Interface

Remote Interface

Primary Key

Entity Bean Class

Create Database Table and Columns for Entity Data

Deploying the Entity Bean

Client Accessing Deployed Entity Bean

Difference Between Bean-Managed and Container-Managed Beans

Container-Managed Persistence

Accessing EJB References and JDBC DataSources

EJB References

JDBC DataSources

5 JNDI Connections and Session IIOP Service

JNDI Connection Basics

The Name Space

Execution Rights to Database Objects

URL Syntax

URL Components and Classes

Using JNDI to Access Bound Objects

Importing JNDI Support Classes

Retrieving the JNDI InitialContext

Session IIOP Service

Session IIOP Service Overview

Session Management

Service Context Class

Session Context Class

Session Management Scenarios

Setting Session Timeout

Retrieving JServer Version Number

Activating In-Session EJB Objects From Non-IIOP Presentations

Invoking EJB Objects From Applets

Using Signed JAR Files to Conform to Sandbox Security

Performing Object Lookup in Applets

Modifying HTML for Applets that Access EJB Objects

6 IIOP Security

Overview

Data Integrity

Using the Secure Socket Layer

SSL Version Negotiation

Authentication

Client-side Authentication

Using JNDI for Authentication

Providing Username and Password for Client-Side Authentication

Using Certificates for Client Authentication

AuroraCertificateManager Class

Server-Side Authentication

Authorization

Setting up Trust Points

Parsing through the Server's Certificate Chain

AuroraCurrent Class

7 Transaction Handling

Transaction Overview

Global and Local Transactions

Demarcating Transactions

Container or Bean Managed Transactions

Transaction Context Propagation

Enlisting Resources

Two-Phase Commit

JTA Summary

JTA Limitations

JTA Server-Side Demarcation

Container-Managed Transactions

Bean-Managed Transactions

JTA Client-Side Demarcation

Enlisting Resources on the Server-side

Configuring Two-Phase Commit Engine

Creating DataSource Objects Dynamically

Setting the Transaction Timeout

Using the Session Synchronization Interface

JDBC Restrictions

A XML Deployment Descriptors

Enterprise JavaBean Deployment Descriptor

Header

JAR file

Enterprise JavaBeans Descriptor

Application Assembler Section

Oracle-Specific Deployment Descriptor

Header

Defining Mappings

Defining Two Phase Commit Engine for Transactions

Defining Run-As Identity

Defining Container-Managed Persistence

EJB Client JAR Section

DTD for Oracle-Specific Deployment Descriptor

B Example Code: EJB

Basic Example

README

Client

Home Interface for Hello

Remote Interface for Hello

Bean Implementation for Hello

SQLJ Example

README

Client

Home Interface

Remote Interface

Bean Implementation

Bean Inheritance Example

README

Client

Home Interface

Remote Interface

Bean Implementation

Entity Bean Examples

Bean-Managed Entity Bean Example

Client

Home Interface

Remote Interface

Bean Implementation

Deployment Descriptor

Container-Managed Entity Bean Example

Client

Home Interface

Remote Interface

Bean Implementation

XML Deployment Descriptor

Oracle-Specific Deployment Descriptor

Database Table Updates

Session Example

README

Client

Home Interface

Remote Interface

Bean Implementation

SSL Examples

Client-Side Authentication Example

README

Client

Home Interface

Remote Interface

Bean Implementation

Server-Side Authentication Example

README

Client

Home Interface

Remote Interface

Bean Implementation

C Abbreviations and Acronyms

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