SimpleEntity.java

20110404220338_simple_model.sql

-- new table for simple entity 
create table SimpleEntity (
    id bigint not null auto_increment, 
    age integer not null, 
    isEternal bit not null, 
    name varchar(255), 
    primary key (id)
) ENGINE=InnoDB DEFAULT CHARSET=utf8;

20110404221245_added_category_for_the_entity.sql

-- added category for the simple entity
create table SimpleCategory (
    id bigint not null auto_increment,
    age integer not null,
    name varchar(255),
    primary key (id)
) ENGINE=InnoDB DEFAULT CHARSET=utf8;

alter table SimpleEntity add column category_id bigint;

alter table SimpleEntity add index FK9F72C8559BDF44F0 (category_id),
add constraint FK9F72C8559BDF44F0 foreign key (category_id) references SimpleCategory (id);

SimpleEntity.java

@Entity
public class SimpleEntity extends Model {
    public String name;
    public int age;
    public boolean isEternal;
}

SimpleEntityWithCategory.java

@Entity
public class SimpleEntity extends Model {
    public String name;
    public int age;
    public boolean isEternal;

    @ManyToOne
    public SimpleCategory category;
}

@Entity
public class SimpleCategory {
    public String name;
    public int age;
}