Visualizing JPA entities
A UML diagram can visualize JPA entities and their relationships. Entities can be created from the diagram, or the UML diagram can be used to visualize existing entities.
Next, we create a UML class diagram from the generated JPA entities:
| Right-click the RAD75JPA project and select New Æ Class Diagram. |
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| Accept the default name (classdiagram), and click Finish. |
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| When prompted to enable modeling capabilities, click OK. |
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| The class diagram opens. Expand the Palette, JPA drawer (Figure | 2-5). |
Figure 12-5 Class diagram with JPA Palette
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| Drag the Customer class into the diagram (Figure | 2-6). |
Figure 12-6 Customer class visualized
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| Drag the Account and Transaction classes into the diagram. Close the method compartments. Select and drag the <<use>> arrows to separate them (Figure | 2-7). Save and close the diagram. |
Figure 12-7 JPA class diagram
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