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

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?