@GeneratedValue

If we have a UUID that is not the @Id we can add @GeneratedValue and then Ebean will assign a appropriate UUID generator to it.

/** The Id property using DB Identity or Sequence */
@Id @GeneratedValue
private long id;

/** Alternate unique UUID property */
@GeneratedValue @Column(unique = true)
private UUID uid;

Native storage

UUID has native support in the following database platforms:

• H2
• Postgres
• SQL Server 17

When using these database platforms UUID is stored in a native manor.

Binary storage

Stored as BINARY(16), has the option of storing in optimised manor meaning the order of bytes is changed to provide a better distribution in index.

Varchar storage

Stored as VARCHAR(40).

DatabaseConfig.setDbUuid()

When the database platform does not support UUID natively we can configure the storage option via DatabaseConfig.setDbUuid(...)