JPA @ManyToOne and composite PK
- by Fleuri F
Good Morning,
I am working on project using JPA. I need to use a @ManyToOne mapping on a class that has three primary keys. You can find the errors and the classes after this.
If anyone has an idea! Thanks in advance!
FF
javax.persistence.PersistenceException: No Persistence provider for EntityManager named JTA_pacePersistence: Provider named oracle.toplink.essentials.PersistenceProvider threw unexpected exception at create EntityManagerFactory:
javax.persistence.PersistenceException
javax.persistence.PersistenceException: Exception [TOPLINK-28018] (Oracle TopLink Essentials - 2.0.1 (Build b09d-fcs (12/06/2007))): oracle.toplink.essentials.exceptions.EntityManagerSetupException
Exception Description: predeploy for PersistenceUnit [JTA_pacePersistence] failed.
Internal Exception: Exception [TOPLINK-7220] (Oracle TopLink Essentials - 2.0.1 (Build b09d-fcs (12/06/2007))): oracle.toplink.essentials.exceptions.ValidationException
Exception Description: The @JoinColumns on the annotated element [private java.util.Set isd.pacepersistence.common.Action.permissions] from the entity class [class isd.pacepersistence.common.Action] is incomplete. When the source entity class uses a composite primary key, a @JoinColumn must be specified for each join column using the @JoinColumns. Both the name and the referenceColumnName elements must be specified in each such @JoinColumn.
at oracle.toplink.essentials.internal.ejb.cmp3.EntityManagerSetupImpl.predeploy(EntityManagerSetupImpl.java:643)
at oracle.toplink.essentials.ejb.cmp3.EntityManagerFactoryProvider.createEntityManagerFactory(EntityManagerFactoryProvider.java:196)
at javax.persistence.Persistence.createEntityManagerFactory(Persistence.java:110)
at javax.persistence.Persistence.createEntityManagerFactory(Persistence.java:83)
at isd.pacepersistence.common.DataMapper.(Unknown Source)
at isd.pacepersistence.server.MainServlet.getDebugCase(Unknown Source)
at isd.pacepersistence.server.MainServlet.doGet(Unknown Source)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:718)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:831)
at org.apache.catalina.core.ApplicationFilterChain.servletService(ApplicationFilterChain.java:411)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:290)
at org.apache.catalina.core.StandardContextValve.invokeInternal(StandardContextValve.java:271)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:202)
There is the source code of my classes :
Action :
@Entity
@Table(name="action")
public class Action {
@Id
@GeneratedValue(strategy=GenerationType.IDENTITY)
private int num;
@ManyToOne(cascade= { CascadeType.PERSIST, CascadeType.MERGE,
CascadeType.REFRESH })
@JoinColumn(name="domain_num")
private Domain domain;
private String name;
private String description;
@OneToMany
@JoinTable(name="permission", joinColumns= { @JoinColumn(name="action_num", referencedColumnName="action_num", nullable=false, updatable=false) }, inverseJoinColumns= { @JoinColumn(name="num") })
private Set<Permission> permissions;
public Action() {
}
Permission :
@SuppressWarnings("serial")
@Entity
@Table(name="permission")
public class Permission implements Serializable {
@EmbeddedId
private PermissionPK primaryKey;
@ManyToOne
@JoinColumn(name="action_num", insertable=false, updatable=false)
private Action action;
@ManyToOne
@JoinColumn(name="entity_num", insertable=false, updatable=false)
private isd.pacepersistence.common.Entity entity;
@ManyToOne
@JoinColumn(name="class_num", insertable=false, updatable=false)
private Clazz clazz;
private String kondition;
public Permission() {
}
PermissionPK :
@SuppressWarnings("serial")
@Entity
@Table(name="permission")
public class Permission implements Serializable {
@EmbeddedId
private PermissionPK primaryKey;
@ManyToOne
@JoinColumn(name="action_num", insertable=false, updatable=false)
private Action action;
@ManyToOne
@JoinColumn(name="entity_num", insertable=false, updatable=false)
private isd.pacepersistence.common.Entity entity;
@ManyToOne
@JoinColumn(name="class_num", insertable=false, updatable=false)
private Clazz clazz;
private String kondition;
public Permission() {
}
