MarchePersistantImpl mar= null;
int nbMar = 0;
ArticlePersistantImpl a;
for(int idArt=0; idArt<NB_ARTICLE; idArt++) {
if ((idArt / CATLAOGUE_SIZE) == nbCat) {
cat = new CataloguePersistantImpl(nbCat);
pm.makePersistent(cat);
nbCat ++;
}
if ((idArt / MARCHE_SIZE) == nbMar) {
mar = new MarchePersistantImpl(nbMar);