Hibernate Sequence Generator and H2

Below you can find an example of how to create an ORM with a generated id. The id here is generated via H2 database:

The class file:

---------------

import javax.persistence.Column;

import javax.persistence.Entity;

import javax.persistence.GeneratedValue;

import javax.persistence.GenerationType;

import javax.persistence.Id;

import javax.persistence.Table;

@Entity

@Table(name = "some_table")

@javax.persistence.SequenceGenerator(name = "SEQ_SOME_TABLE", sequenceName = "SEQ_SOME_TABLE")

public class SomeOrm {

protected Long id;

protected String text;

public SomeOrm() {

}

@Id

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

@Column(name = "some_id")

public Long getId() {

return this.id;

}

public void setId(Long id) {

this.id = id;

}

@Column(name = "text")

public String getText() {

return text;

}

public void setText(String text) {

this.text = text;

}

}

The code for the database table:

-------------------------------------

CREATE SEQUENCE SEQ_SOME_TABLE;

create table some_table (

some_id BIGINT DEFAULT (NEXT VALUE FOR SEQ_SOME_TABLE) not null primary key,

text VARCHAR2

);