jpa - Hibernate: How specify custom sequence generator class name using annotations?

Question

I want to specify following hbm configuration using annotations:

<id name="somePK" column="&quot;somePK&quot;" type="long">
            <generator class="com.db.hibernate.KeyGenerator"/>
        </id>

I am not sure how to provide class name with

@GeneratedValue(strategy=GenerationType.SEQUENCE, generator="SEQ_STORE")

Do I have to specify @javax.persistence.SequenceGenerator in each entity class?
Can I specify just the class name under @GeneratedValue annotation?

Answer 1

please find below set of code which i have used in project for the same.

@Id
@GeneratedValue(strategy = GenerationType.SEQUENCE, generator = "XyzIdGenerator")
@GenericGenerator(name = "XyzIdGenerator",
        strategy = "com.mycompany.myapp.id.BigIntegerSequenceGenerator",
        parameters = {
            @Parameter(name = "sequence", value = "xyz_id_sequence")
        })
public BigInteger getId()
{
   return id;
}


package com.mycompany.myapp.id;

import org.hibernate.id.SequenceGenerator;
...

public class BigIntegerSequenceGenerator
    extends SequenceGenerator
{
    @Override
    public Serializable generate(SessionImplementor session, Object obj)
    {
        ...
    }
}