JPA many to many relation: unable to insert into generated table - jpa

Question

I have 2 entities "Entree" and "Emplacement":
#Entity
#Table(name = "ENTREE")
public class Entree {
#Id
#GeneratedValue(strategy = GenerationType.IDENTITY)
#Column(name = "ID_ENTREE", updatable = false, nullable = false)
private long idEntree;
#Column(name = "NUM_DECLARATION", insertable=true, updatable=true, nullable=true)
private String numDeclaration;
#Column(name = "DATE_ENTREE", insertable=true, updatable=true, nullable=true)
private String dateEntree;
#Column(name = "TYPE_ENTREE", insertable=true, updatable=true, nullable=true)
private String typeEntree;
#Column(name = "NOM_ARTICLE", insertable=true, updatable=true, nullable=true)
private String nomArticle;
#Column(name = "TYPE_ARTICLE", insertable=true, updatable=true, nullable=true)
private String typeArticle;
#Column(name = "QUANTITE_ENTREE", insertable=true, updatable=true, nullable=true)
private int quantiteEntree;
#ManyToOne
#JoinColumn(name="idDossier", nullable=false)
private Dossier dossier;
#ManyToMany( fetch = FetchType.LAZY, cascade = CascadeType.PERSIST)
#JoinTable(name = "entree_emplacement",
joinColumns = {
#JoinColumn(name = "id_entree", referencedColumnName = "id_entree",
nullable = false, updatable = false)},
inverseJoinColumns = {
#JoinColumn(name = "id_emplacement", referencedColumnName = "id_emplacement",
nullable = false, updatable = false)})
private Set<Emplacement> emplacement = new HashSet<>();
public Entree() {
super();
}
public Entree( String numDeclaration, String dateEntree, String typeEntree, String nomArticle, String typeArticle, int quantiteEntree, boolean isDone) {
super();
this.numDeclaration = numDeclaration;
this.dateEntree = dateEntree;
this.typeEntree = typeEntree;
this.nomArticle = nomArticle;
this.typeArticle = typeArticle;
this.quantiteEntree = quantiteEntree;
}
public long getIdEntree() {
return idEntree;
}
public void setIdEntree(long idEntree) {
this.idEntree = idEntree;
}
public String getNumDeclaration() {
return numDeclaration;
}
public void setNumDeclaration(String numDeclaration) {
this.numDeclaration = numDeclaration;
}
public String getDateEntree() {
return dateEntree;
}
public void setDateEntree(String dateEntree) {
this.dateEntree = dateEntree;
}
public String getTypeEntree() {
return typeEntree;
}
public void setTypeEntree(String typeEntree) {
this.typeEntree = typeEntree;
}
public String getNomArticle() {
return nomArticle;
}
public void setNomArticle(String nomArticle) {
this.nomArticle = nomArticle;
}
public String getTypeArticle() {
return typeArticle;
}
public void setTypeArticle(String typeArticle) {
this.typeArticle = typeArticle;
}
public int getQuantiteEntree() {
return quantiteEntree;
}
public void setQuantiteEntree(int quantiteEntree) {
this.quantiteEntree = quantiteEntree;
}
public Dossier getDossier() {
return dossier;
}
public void setDossier(Dossier dossier) {
this.dossier = dossier;
}
public Set<Emplacement> getEmplacements() {
return emplacement;
}
public void addEmplacement(Emplacement emplacement) {
this.emplacement.add(emplacement);
emplacement.getEntrees().add(this);
}
public void removeEmplacement(Emplacement emplacement) {
this.emplacement.remove(emplacement);
emplacement.getEntrees().remove(this);
}
}
And here the second entity:
#Entity
#Table(name = "EMPLACEMENT")
public class Emplacement {
#Id
#GeneratedValue(strategy = GenerationType.IDENTITY)
#Column(name = "ID_EMPLACEMENT", updatable = false, nullable = false)
private long idEmplacement;
#Column(name = "NUM_EMPLACEMENT", insertable=true, updatable=true, nullable=false)
private String numEmplacement;
#ManyToMany(mappedBy = "emplacement", fetch = FetchType.LAZY, cascade = {CascadeType.ALL})
private Set<Entree> entree = new HashSet<>();
public Emplacement() {
}
public Emplacement( String numEmplacement) {
this.numEmplacement = numEmplacement;
}
public long getIdEmplacement() {
return idEmplacement;
}
public void setIdEmplacement(long idEmplacement) {
this.idEmplacement = idEmplacement;
}
public String getNumEmplacement() {
return numEmplacement;
}
public void setNumEmplacement(String numEmplacement) {
this.numEmplacement = numEmplacement;
}
public Set<Entree> getEntrees() {
return entree;
}
}
Here is my inserting code:
#PostMapping("/ajouterEntree")
public ResponseEntity<String> addEntree(#Valid Entree entree, BindingResult result,ModelMap modelMap, #RequestParam(name = "numDossier") String numDossier, #RequestParam(name = "emplacement") String liste_emplacements) {
Emplacement e = new Emplacement(liste_emplacements);
entree.getEmplacements().add(e);
entreeService.saveEntree(entree);
return new ResponseEntity<String>("ok" + result, HttpStatus.OK);
}
I am able to insert datas into Entree and Emplacement tables, but the third generated table named entree-emplacement is empty.
So how can I insert datas into generated table in #ManyToMany relation?
Thanks

Answer 1

Ok it's resolved. Here is my code:
if(!liste_emplacements.equals(""))
{
List<String> list = new ArrayList<String>(Arrays.asList(liste_emplacements.split(",")));
Emplacement[] emp = new Emplacement[list.size()];
for (int i=0; i<list.size() ;i++)
{
emp[i] = new Emplacement(Long.parseLong(list.get(i)));
entree.getEmplacements().add(emp[i]);
emp[i].getEntrees().add(entree);
}
}
entreeService.saveEntree(entree);
return new ResponseEntity<String>("ok" + result, HttpStatus.OK);