javahibernatesequence-generators

Replace @SequenceGenerator since its deprecated


I have a problem with @SequenceGenerator:

@SequenceGenerator(name="pk_user_id", sequenceName="seq_user_id", allocationSize=1)
@GeneratedValue(strategy=GenerationType.SEQUENCE, generator="pk_user_id")

When the application starts up it shows warning:

WARN 7388 --- [ main] org.hibernate.orm.deprecation : HHH90000014: Found use of deprecated [org.hibernate.id.SequenceHiLoGenerator] sequence-based id generator; use org.hibernate.id.enhanced.SequenceStyleGenerator instead. See Hibernate Domain Model Mapping Guide for details

I tried to find out how I can replace a deprecated code with a new one but can't find any solution.


Solution

  • According to the warning message and Hibernate documentation (Hibernate deprecated list) you should use SequenceStyleGenerator. Or better use @GenericGenerator and specify generator strategy.

    Here is a typical example of usage:

    @GenericGenerator(
            name = "wikiSequenceGenerator",
            strategy = "org.hibernate.id.enhanced.SequenceStyleGenerator",
            parameters = {
                    @Parameter(name = "sequence_name", value = "WIKI_SEQUENCE"),
                    @Parameter(name = "initial_value", value = "1000"),
                    @Parameter(name = "increment_size", value = "1")
            }
    )
    @Id
    @GeneratedValue(generator = "wikiSequenceGenerator")