In XDOCLET, I could use the following syntax to specify the id generator class to be a customized class

[code]
@hibernate.id
* generator-class="com.***.MyPrimaryKeyGenerator" * column="ID" length="32"
[/code]

How can I do the same thing with annotation? thanks

As far as I know, it is not possible with standard JPA annotations, as JPA only specify support for Table and Sequence based generators.

However, Hibernate Annotations offers the "org.hibernate.annotations.GenericGenerator" specific annotation that allow you to use a custom generator (via its "strategy" attribute) : see http://www.hibernate.org/hib_docs/annotations/reference/en/html_single/#entity-hibspec-identifier

As far as I know, it is not possible with standard JPA annotations, as JPA only specifies support for Table and Sequence based generators.

However, Hibernate Annotations offer the "org.hibernate.annotations.GenericGenerator" specific annotation that allow you to use a custom generator (via its "strategy" attribute) : see http://www.hibernate.org/hib_docs/annotations/reference/en/html_single/#entity-hibspec-identifier

Thanks, it brings me another question, how can I define a strategy to map with my custom id generator class. I didn't find it inhibernate reference.

thanks, I got

strategy is the short name of an Hibernate3 generator strategy or the fully qualified class name of an IdentifierGenerator implementation. You can add some parameters through the parameters attribute