How This Guide Is Organized

This guide consists of the following:

• Chapter 1, "How Do Applications Use EJBs?", presents a brief overview of EJBs.

• Chapter 2, "How to Access EJBs", discusses how to access an EJB from a servlet within the application server or from outside the application server—either from an EJB within another application server or from a local client. .

• Chapter 3, "Implementing Session Beans", discusses how to begin developing J2EE applications.

• Chapter 4, "Entity Beans", discusses entity beans.

• Chapter 5, "CMP Entity Beans", discusses a CMP entity bean and advanced issues connected with CMP entity beans.

• Chapter 6, "Entity Relationship Mapping", discusses container-managed relationships (CMR) within the entity bean for OC4J.

• Chapter 7, "EJB Query Language", provides an overview and examples of setting up query methods that use EJB QL.

• Chapter 8, "BMP Entity Beans", discusses a BMP entity bean.

• Chapter 9, "Message-Driven Beans", discusses an MDB entity bean.

• Chapter 10, "Understanding Environment, Deployment, and Packaging", discusses how to set up your development environment, as well as packaging and deploying your applications.

• Chapter 12, "Configuring EJB Application Security", discusses EJB application security.

• Chapter 11, "Using Timers", discusses the use of timers within different EJB types.

• Chapter 13, "EJB Clustering", discusses how to cluster EJBs across OC4J nodes.

• Appendix A, "XML Reference for ORION-EJB-JAR.XML" describes the OC4J-specific deployment descriptor.

• Appendix B, "Third Party Licenses", contains the third party software licenses for this product.