Designing Object Model with UML Class Diagram - Visual Paradigm

DB-VA Designer’s Guide Chapter 3 – Designing Object Model with UML Class Diagram
Adding ORM Implementation Class
ORM-Persistable class is used to generate the persistent class which has the ability to access the database including the basic
operations for add, update, delete and search. As the generated code provides the basic operations for manipulating the
persistent data, you may find it insufficient and want to add extra logic to it.
DB-VA promotes the use of ORM Implementation Class to add extra logic to the ORM-Persistable class. When generating the
persistent code, the ORM implementation class will also be generated, and thus you can implement the logic to the method in
the generated implementation class for manipulating the persistent data.
To add an ORM implementation class:
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1. Create an ORM-Persistable class with an operation for adding extra logic.
Figure 3.26 - ORM-Persistable class with an operation
2. Mouse over the class and drag the resource of "Create ORM Implementation Class" to the diagram pane.
Figure 3.27 - "Create ORM Implementation Class" resource
The implementation class is created and connected to the source class with generalization stereotyped as . The source class becomes an abstract class with an abstract operation.
Figure 3.28 - ORM Persistable Class and ORM Implementation Class