Replace @SequenceGenerator since its deprecated

问题:

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.

回答1:

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")