The JPA diagram editor supports the new style One-to-Many unidirectional relationship. It means that in JPA 2.0 projects the corresponding relationship attribute will be created with additional @JoinColumns(s) annotation, so that the corresponding DB schema will be created without additional join table.
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Note: This behavior is optional. You may choose from the editor preference page or project property page to create this relationship (in JPA 2.0 projects) compliant with JPA 1.0 specification, i.e. - without the additional @JoinColumns(s) annotation. |
The JPA diagram editor supports embedding an embeddable either in an entity or in another embeddable.
The JPA diagram editor supports collections of embeddables and primitives. It means that when a new attribute of collection type is added, it will be annotated with the @ElementCollection annotation.
The JPA diagram editor supports creation and visualization of relationships between embeddables and entities.
The JPA diagram editor supports derived identifiers.