Chapter 24. CMP Mapping Strategies and Mapping in WSAD
In Chapter 14, we described several different mapping patterns demonstrating how to write your own JDBC code to persist a domain model to a relational database. The problem with roll-your-own persistence is the large amount of code that you must update whenever the domain model or the relational database changes. This can become a maintenance nightmare and it discourages refactoring of the domain model.
Chapter 23 introduced container-managed entities which have the benefit of using container-managed transaction demarcation, built-in security support, and automatic JDBC code generation for finding and persisting container-managed entities. This provides more efficiency developing the application ...
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