One To One Mapping

@Entity
@Table(name = "Post")
public class Post {

        private int id;
        private Content content;

        @Id
        @GeneratedValue(strategy = GenerationType.IDENTITY)
        public int getId() {
                return id;
        }

        @OneToOne(fetch = FetchType.EAGER, cascade = CascadeType.ALL)
        @PrimaryKeyJoinColumn(name = "id", referencedColumnName = "content_id")
        public Content getContent() {
                return content;
        }

        public void setContent(Content content) {
                this.content = content;
        }
}


@Entity
@Table(name = "Content")
public class Content {

        private int content_id;

        @GenericGenerator(name = "generator", strategy = "foreign", parameters = @Parameter(name = "property", value = "post1"))
        @Id
        @GeneratedValue(generator = "generator")
        public int getContent_id() {
                return content_id;
        }

        public void setContent_id(int content_id) {
                this.content_id = content_id;
        }

}