relation d'hibernation bidirectionnelle

Question

J'ai une application web utilisant hibernate et les entités suivantes. Qu'est-ce que je fais de mal?

... 
@Entity 
public class Registration implements BaseEntity { 
... 
@OneToMany(cascade = {CascadeType.PERSIST}, mappedBy = "registration", fetch = FetchType.EAGER) 
private List<OrderedProduct> orderedProducts = new ArrayList<OrderedProduct>(); 
... 
public List<OrderedProduct> getOrderedProducts() { 
    return orderedProducts; 
} 

public void setOrderedProducts(List<OrderedProduct> orderedProducts) { 
    this.orderedProducts = orderedProducts; 
} 
... 

---

... 
@Entity 
public class OrderedProduct implements BaseEntity { 
... 
@ManyToOne 
@JoinColumn(name = "registration_id",nullable = true) 
private Registration registration; 
... 
public Registration getRegistration() { 
    return registration; 
} 
public void setRegistration(Registration registration) { 
    this.registration = registration; 
} 
... 

---

Quand je l'utilise, j'obtiens l'erreur Tomcat suivante:

Caused by: org.hibernate.AnnotationException: Illegal use of mappedBy on both sides of the relationship: at.irian.conference.domain.Registration.orderedProducts 
    at org.hibernate.cfg.annotations.TableBinder.bindFk(TableBinder.java:193) 
    at org.hibernate.cfg.annotations.CollectionBinder.bindCollectionSecondPass(CollectionBinder.java:1325) 
    at org.hibernate.cfg.annotations.CollectionBinder.bindManyToManySecondPass(CollectionBinder.java:1164) 
    at org.hibernate.cfg.annotations.CollectionBinder.bindStarToManySecondPass(CollectionBinder.java:602) 
    at org.hibernate.cfg.annotations.CollectionBinder$1.secondPass(CollectionBinder.java:543) 
    at org.hibernate.cfg.CollectionSecondPass.doSecondPass(CollectionSecondPass.java:66) 
    at org.hibernate.cfg.Configuration.secondPassCompile(Configuration.java:1163) 
    at org.hibernate.cfg.AnnotationConfiguration.secondPassCompile(AnnotationConfiguration.java:329) 
    at org.hibernate.cfg.Configuration.buildMappings(Configuration.java:1148) 
    at org.hibernate.ejb.Ejb3Configuration.buildMappings(Ejb3Configuration.java:1226) 
    at org.hibernate.ejb.EventListenerConfigurator.configure(EventListenerConfigurator.java:173) 
    at org.hibernate.ejb.Ejb3Configuration.configure(Ejb3Configuration.java:854) 
    at org.hibernate.ejb.Ejb3Configuration.configure(Ejb3Configuration.java:425) 
    at org.hibernate.ejb.HibernatePersistence.createContainerEntityManagerFactory(HibernatePersistence.java:131) 
    at org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean.createNativeEntityManagerFactory(LocalContainerEntityManagerFactoryBean.java:221) 
    at org.springframework.orm.jpa.AbstractEntityManagerFactoryBean.afterPropertiesSet(AbstractEntityManagerFactoryBean.java:251) 
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.invokeInitMethods(AbstractAutowireCapableBeanFactory.java:1288) 
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1257) 
    ... 86 more 

Answer 1

collection Mapping avec liste a besoin d'une colonne "séquence" cartographié dans la base de données. Avez-vous l'intention d'utiliser comme Set

Answer 2

ce code est bon, je l'ai oublié de supprimer une autre relation

Answer 3

Je ne suis pas sûr de la syntaxe en utilisant les annotations. Nous avions l'habitude de définir une telle relation comme ci-dessous.

Registration.hbm.xml

<bag 
    name="orderedProducts" 
    inverse="true" 
    cascade="appropriate-one" 
> 
    <key> 
     <column name="REGISTRATION_ID" /> 
    </key> 
    <one-to-many 
     class="orderedProducts" 
    /> 
</bag> 

OrderedProducts.hbm.xml

<many-to-one 
    name="registration" 
    class="Registration" 
> 
    <column name="REGISTRATION_ID"/> 
</many-to-one> 

Answer 4

Essayez les annotations comme ci-dessous. Cela résoudra vos problèmes.

@ManyToOne(fetch = FetchType.EAGER) 

@JoinColumn(name = "registration_id") 

public Registration getRegistration() { 
    return registration; 
} 

public void setRegistration(Registration registration) { 
    this.registration = registration; 
} 

@OneToMany(fetch = FetchType.EAGER, targetEntity = Registration.class, mappedBy = "registration", cascade = { CascadeType.ALL }) 
@Cascade(org.hibernate.annotations.CascadeType.DELETE_ORPHAN) 
@Fetch(FetchMode.SELECT) 
@JoinColumn(name = "registration_id")