CODEWITHSUNDEEP
javahibernate
AMZ
AMZ

Reputation: 362

Why do we need a sepearte table for TABLE strategy in hibernate?

My question is, why do we need a sequence table for table strategy in hibernate inheritance, which id generation must be equal to TABLE? Can't each entity use the IDENTITY column of each table?

    @Id
    @GeneratedValue(strategy = GenerationType.TABLE)
    @Column(updatable = false, nullable = false, insertable = false)
    protected int id;

Upvotes: 0

Views: 58

Answers (1)

Marco Belladelli
Marco Belladelli

Reputation: 101

As for the jakarta.persistence.GenerationType javadoc, TABLE is used to indicate the primary keys should be stored in an underlying database table - which is separate from the entities tables - whether you are using inheritance or not.

If you want id to be an IDENTITY column for each table you should use the GenerationType.IDENTITY strategy.

Upvotes: 1

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