Java Reference
In-Depth Information
Specify the identifier property for the Edition entity. The @GeneratedValue
annotation is not required if the ID value is set in the application and not
generated automatically:
public String getId() {
return id;
Similarly add a @OneToMany mapping to the Article entity. The Edition entity class
is listed as follows:
package model;
import java.util.List;
import javax.persistence.CascadeType;
import javax.persistence.Column;
import javax.persistence.Entity;
import javax.persistence.FetchType;
import javax.persistence.GeneratedValue;
import javax.persistence.Id;
import javax.persistence.JoinColumn;
import javax.persistence.JoinTable;
import javax.persistence.NamedQueries;
import javax.persistence.NamedQuery;
import javax.persistence.OneToMany;
@NamedQueries( {
@NamedQuery(name = "findEditionsAll",
query = "select o from Edition o"),
@NamedQuery(name = "findEditionById",
query = "SELECT o from Edition o
WHERE = :id") })
public class Edition implements Serializable {
static final long serialVersionUID = 1;
private List<Section> sections;
private List<Article> articles;
@Column(length = 100)
private String edition;
@Column(nullable = false, length = 100)
private String id;
@Column(length = 100)
private String journal;
@Column(length = 100)
private String publisher;
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