EJB 2.0 Development with WebSphere Studio Application Developer
by Ueli Wahli, Wouter Denayer, Lars Schunk, Deborah Shaddon, Martin Weiss
Introduction
This chapter covers the following specific concepts:
EJB container-managed relationships (CMR)— Relationships are a way to define associations between entity beans. Built-in container support is provided to support relationships in EJB.
EJB inheritance— Inheritance is the ability of entity beans to inherit from other entity beans. It is an IBM extension already provided for EJB 1.1 by IBM products such as VisualAge for Java and WebSphere Application Server.
EJB custom query methods— Query methods are any method in the home that is used to locate entity beans, such as findXxxx (called finder methods), and selectXxxx (called select methods). We mentioned that with CMPs, the container is responsible for generating the actual database ...
Become an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
and much more.
Read now
Unlock full access