[Data] Cannot persist detached object

Cannot persist detached object

J'ai deux classes
Code:

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 @SuppressWarnings( { "unused", "serial" }) @Entity @Table(name = "Occupation") public class Occupation implements Serializable{ @OneToOne(cascade = CascadeType.ALL, fetch=FetchType.LAZY) @JoinColumn(name="LOGIN", unique = true,nullable = true) private Login login; --- public Login getLogin() { return login; } public void setLogin(Login login) { this.login = login; } } @SuppressWarnings( { "unused", "serial" }) @Entity @Table(name = "Login") public class Login implements Serializable{ @OneToOne(mappedBy = "login", fetch=FetchType.LAZY) private Occupation occupation; --- public Occupation getOccupation() { return occupation; } public void setOccupation(Occupation occupation) { this.occupation = occupation; } }
L'exécution
Code:

1 2 3 4 5 6 7 8 Occupation o1 = new Occupation(new SimpleDateFormat("dd/MM/yyyy").parse("01/01/2009"),new SimpleDateFormat("dd/MM/yyyy").parse("30/06/2009")); //Occupation o1 = new Occupation(); o1.setLogin(l1); Occupation o2 = new Occupation(new SimpleDateFormat("dd/MM/yyyy").parse("01/07/2009"),new SimpleDateFormat("dd/MM/yyyy").parse("31/12/2009")); //Occupation o2 = new Occupation(); o2.setLogin(l2); service.saveOccupations(new Occupation[] { o1, o2});
et j'ai l'erreur suivante:

Citation:

log4j:WARN No appenders could be found for logger (org.springframework.context.support.ClassPathXmlApplicationContext).
log4j:WARN Please initialize the log4j system properly.
[TopLink Info]: 2009.02.05 08:59:13.046--ServerSession(29751107)--TopLink, version: Oracle TopLink Essentials - 2.0 (Build b41-beta2 (03/30/2007))
[TopLink Info]: 2009.02.05 08:59:13.421--ServerSession(29751107)--file:/C:/Netbeans/workspace/NetBeansProjects/HibernateTest/src/-jpa login successful
Exception in thread "main" javax.persistence.EntityExistsException:
Exception Description: Cannot persist detached object [P[1,jpa,jpa]].
Class> mis.cinq.entites.Login Primary Key> [jpa]
at oracle.toplink.essentials.internal.ejb.cmp3.base.EntityManagerImpl.persist(EntityManagerImpl.java:193)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:585)
at org.springframework.orm.jpa.SharedEntityManagerCreator$SharedEntityManagerInvocationHandler.invoke(SharedEntityManagerCreator.java:198)
at $Proxy16.persist(Unknown Source)
at mis.cinq.dao.Dao.saveOccupation(Dao.java:180)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:585)
at org.springframework.aop.support.AopUtils.invokeJoinpointUsingReflection(AopUtils.java:307)
at org.springframework.aop.framework.ReflectiveMethodInvocation.invokeJoinpoint(ReflectiveMethodInvocation.java:182)
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:149)
at org.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java:106)
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:171)
at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:204)
at $Proxy19.saveOccupation(Unknown Source)
at mis.cinq.service.Service.saveOccupations(Service.java:257)
at mis.cinq.view.InitDB.fill(InitDB.java:97)
at mis.cinq.view.InitDB.main(InitDB.java:36)
Caused by: Exception [TOPLINK-7231] (Oracle TopLink Essentials - 2.0 (Build b41-beta2 (03/30/2007))): oracle.toplink.essentials.exceptions.ValidationException
Exception Description: Cannot persist detached object [P[1,jpa,jpa]].
Class> mis.cinq.entites.Login Primary Key> [jpa]
at oracle.toplink.essentials.exceptions.ValidationException.cannotPersistExistingObject(ValidationException.java:2156)
at oracle.toplink.essentials.internal.sessions.UnitOfWorkImpl.registerNotRegisteredNewObjectForPersist(UnitOfWorkImpl.java:3237)
at oracle.toplink.essentials.internal.ejb.cmp3.base.RepeatableWriteUnitOfWork.registerNotRegisteredNewObjectForPersist(RepeatableWriteUnitOfWork.java:323)
at oracle.toplink.essentials.internal.sessions.UnitOfWorkImpl.registerNewObjectForPersist(UnitOfWorkImpl.java:3206)
at oracle.toplink.essentials.mappings.ObjectReferenceMapping.cascadeRegisterNewIfRequired(ObjectReferenceMapping.java:655)
at oracle.toplink.essentials.internal.descriptors.ObjectBuilder.cascadeRegisterNewForCreate(ObjectBuilder.java:1256)
at oracle.toplink.essentials.internal.sessions.UnitOfWorkImpl.registerNewObjectForPersist(UnitOfWorkImpl.java:3212)
at oracle.toplink.essentials.internal.ejb.cmp3.base.EntityManagerImpl.persist(EntityManagerImpl.java:190)
... 21 more
Java Result: 1
BUILD SUCCESSFUL (total time: 3 seconds)

Bonjour,

Je connais pas très bien jpa, mais c'est normal que tu n'est pas de @Id ni Occupation, ni sur Login ?
Je croyais que c'était obligatoire et que ça servait à identifier un objet (peut être que toplink gère ça sans raler). Je vois aussi un :
Code:

1 2 at oracle.toplink.essentials.exceptions.ValidationException.cannotPersistExistingObject(ValidationException.java:2156)
Donc soit ton objet existe ou alors toplink s'embrouille avec les identifiants.

si j'en ait

Code:

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public class Occupation implements Serializable{
    @Id
	@Column(nullable = false)
	@GeneratedValue(strategy = GenerationType.AUTO)
	private int id;
 
public class Login implements Serializable{
    @Id
	@Column(length = 20,unique = true,nullable = false)
	private String login;

En optant pour la mise à jour ça marche.Code

Code:

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Occupation o1 = new Occupation(new SimpleDateFormat("dd/MM/yyyy").parse("01/01/2009"),new SimpleDateFormat("dd/MM/yyyy").parse("30/06/2009"));
        //Occupation o1 = new Occupation();
        //o1.setLogin(l1);
        //o1.setPersonne(p1);
        //o1.setFonction(fadm);
        Occupation o2 = new Occupation(new SimpleDateFormat("dd/MM/yyyy").parse("01/07/2009"),new SimpleDateFormat("dd/MM/yyyy").parse("31/12/2009"));
        //Occupation o2 = new Occupation();
        //o2.setLogin(l2);
        //o2.setPersonne(p5);
        //o2.setFonction(fchf);
        service.saveOccupations(new Occupation[] { o1, o2});
        o1.setLogin(l1);
        o1.setPersonne(p1);
        o1.setFonction(fadm);
        o2.setLogin(l2);
        o2.setPersonne(p5);
        o2.setFonction(fchf);
        service.updateOccupations(new Occupation[] { o1, o2});

Je me demande pourquoi l'autre code ne marche pas

EntityManager.persist c'est pour un objet nouveau (sans id…)
si l'objet a été lu du repository et ensuite modifié il faut utiliser EntityManager.merge…