OTUG Java SIG August 2003

Meeting notes:

Matt Bauer gave a great presentation on Entity Beans 2.0 at the Java SIG meeting on August 26. After his formal presentation, there was a lively discussion usage patterns and style. They discussion items were:

• When would you use Bean Managed Persistence over Container Managed Persistence?
• How would you span two or more tables with a single entity bean?
• Use of value objects, should they be immutable.

Matt will be making his presentation available on the web.

The discussion moved to what we be doing next. Dale gave a brief overview and a potential issue. The group decided that next meeting consist of Dale presenting the OahuWiki design and its extension points. We will start the Struts-based UI with the page load functionality. In the meantime, the development discussion will continue at http://www.otug.org/otcgi-bin/wiki.pl?OahuWikiDevelopment

Presentation Abstract:

This presentation will cover the following concepts:

• Entity Beans Are Not Database Rows
• Lifecycle
• What Makes an Entity
• Primary Key Designs
• Home Methods
• Container Managed Persistence And Relationships
• Custom Finders/Selects with EJB-QL
• Transaction and Isolation Levels
• Discussion of Various Containers

The presentation discusses Entity Beans using a sample gambling application with many code examples. At the end of the presentation you will have a solid understanding of how Entities can propel your application.