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Forum locked This topic is locked, you cannot edit posts or make further replies.  [ 1 post ] 
Author Message
 Post subject: Unable to locate appropriate constructor on class
PostPosted: Fri Sep 16, 2011 9:09 am 
Newbie

Joined: Fri Sep 16, 2011 9:05 am
Posts: 2
Bonjour j'ai une erreur Unable to locate appropriate constructor on class lorsque je passe dans une requête :

Code:
   public List<com.entreprise.xxx.bean.Vehicule> getVehiculesByVersion(String versionCode) {
      CriteriaBuilder builder = em.getCriteriaBuilder();
      CriteriaQuery<com.entreprise.xxx.bean.Vehicule> criteria = builder.createQuery(com.entreprise.xxx.bean.Vehicule.class);
      Root<AnswerVersion> root = criteria.from(AnswerVersion.class);
      Join<AnswerVersion, Answer> versionAnswers = root.join("answers");
      Join<Answer, Marque> answerMarque= versionAnswers.join("marque");
      Join<Marque, Vehicule> marqueVehicule = answerMarque.join("vehicule");
      criteria.select(builder.construct(com.entreprise.xxx.bean.Vehicule.class,
marqueVehicule.get("code"), marqueVehicule.get("name"), marqueVehicule.get("entrepot"))).distinct(true);
      criteria.where(builder.equal(root.get("code"), versionCode));
      criteria.orderBy(builder.asc(marqueVehicule.get("name")));
      return em.createQuery(criteria).getResultList();
   }


Mon bean Vehicule de persistance
Code:
   @Id
   @Column(name="CODE", length=3)
   private String code;
   public String getCode() { return code; }
   public void setCode(String code) { this.code = code; }

   @Column(name="NAME", length=50, nullable=false)
   private String name;
   public String getName() { return name; }
   public void setName(String name) { this.name = name; }

   @ManyToOne(targetEntity=Entrepot.class)
   @JoinColumn(name="ENTREPOT_CODE", nullable=false)
   private Entrepot entrepot;
   public Entrepot getEntrepot() { return Entrepot; }
   public void setEntrepot(Entrepot entrepot) { this.Entrepot = entrepot; }


J'ai donc une liaison entre mon véhicle et mon entrepot via le champ ENTREPOT_CODE.

Mon bean Vehicule côté métier (pour récupérer un objet Vehicule) :

Code:
   public Vehicule() {}
   public Vehicule(String code, String name, Entrepot entrepot) {
      super();
      this.code = code;
      this.name = name;
      this.entrepot = entrepot;
   }
   public String getCode() {
      return code;
   }
   public void setCode(String code) {
      this.code = code;
   }
   public String getName() {
      return name;
   }
   public void setName(String name) {
      this.name = name;
   }
   public void setEntrepot(Entrepot entrepot) {
      this.entrepot = entrepot;
   }
   public Entrepot getEntrepot() {
      return entrepot;
   }


trace de l'erreur :

Code:
Caused by: org.hibernate.hql.ast.QuerySyntaxException: Unable to locate appropriate constructor on class [com.entreprise.xxx.bean.Vehicule] [select distinct new com.entreprise.xxx.bean.Vehicule(generatedAlias0.code, generatedAlias0.name, generatedAlias0.entrepot) from com.entreprise.xxx.persistence.bean.AnswerVersion as generatedAlias1 inner join generatedAlias1.answers as generatedAlias2 inner join generatedAlias2.marque as generatedAlias3 inner join generatedAlias3.vehicule as generatedAlias0 where generatedAlias1.code=:param0 order by generatedAlias0.name asc]
   at org.hibernate.hql.ast.QuerySyntaxException.convert(QuerySyntaxException.java:54)
   at org.hibernate.hql.ast.QuerySyntaxException.convert(QuerySyntaxException.java:47)
   at org.hibernate.hql.ast.ErrorCounter.throwQueryException(ErrorCounter.java:82)
   at org.hibernate.hql.ast.QueryTranslatorImpl.analyze(QueryTranslatorImpl.java:261)
   at org.hibernate.hql.ast.QueryTranslatorImpl.doCompile(QueryTranslatorImpl.java:185)
   at org.hibernate.hql.ast.QueryTranslatorImpl.compile(QueryTranslatorImpl.java:136)
   at org.hibernate.engine.query.HQLQueryPlan.<init>(HQLQueryPlan.java:101)
   at org.hibernate.engine.query.HQLQueryPlan.<init>(HQLQueryPlan.java:80)
   at org.hibernate.engine.query.QueryPlanCache.getHQLQueryPlan(QueryPlanCache.java:98)
   at org.hibernate.impl.AbstractSessionImpl.getHQLQueryPlan(AbstractSessionImpl.java:156)
   at org.hibernate.impl.AbstractSessionImpl.createQuery(AbstractSessionImpl.java:135)
   at org.hibernate.impl.SessionImpl.createQuery(SessionImpl.java:1760)
   at org.hibernate.ejb.AbstractEntityManagerImpl.createQuery(AbstractEntityManagerImpl.java:302)
   ... 39 more

Je cherche à récupérer mon objet entrepot (ou bien son ENTREPOT_CODE aucune importance), actuellement il m'est impossible de résoudre cette requête, où est mon erreur s'il vous plait ?


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