Java – Hibernate: manually call sequencegenerator?

I wrote my idgenerator:

public class AkteIdGenerator implements IdentifierGenerator {
   public Serializable generate(SessionImplementor session,Object object)
         throws HibernateException {
      // if custom id is set -> use this id
      if (object instanceof SomeBean) {
         SomeBean someBean = (SomeBean) object;
         Long customId = someBean.getCustomId();
         if (customId != 0) {
            return customId;
         }
      }
      // otherwise --> call the SequenceGenerator manually
      SequenceStyleGenerator sequenceGenerator ...
   }
}

Who knows how to call sequencegenerator from my generator class? I can usually define it according to comments:

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

I would appreciate any solution!!!!

Thank you very much, Norbert

Solution

You can call sequencegenerator.com through the generator class By writing this code

public class StudentNoGenerator implements IdentifierGenerator {

public Serializable generate(SessionImplementor session,Object object)throws HibernateException {

    SequenceGenerator generator=new SequenceGenerator();
    Properties properties=new Properties();
    properties.put("sequence","Stud_NoSequence");
    generator.configure(Hibernate.STRING,properties,session.getFactory().getDialect());
    return generator.generate(session,session);

}

}In the above code, student_ Nosequence is the name of the sequence that can be created Create a sequence study in the database by wring_ NoSequence; Hibernate. String is the type that the sequencegenerator class will return

The domain class will be

import javax.persistence.Column;
    import javax.persistence.Entity;
    import javax.persistence.GeneratedValue;
    import javax.persistence.Id;
    @Entity
    @org.hibernate.annotations.GenericGenerator(
    name = "Custom-generator",strategy = "com.ssis.id.StudentNoGenerator"
    )
    public class Student {
@Id @GeneratedValue(generator = "Custom-generator")
String rno;
@Column
String name;
public String getRno() {
    return rno;
}
public void setRno(String rno) {
    this.rno = rno;
}
public String getName() {
    return name;
}
public void setName(String name) {
    this.name = name;
}
    }