public boolean saveGroupProduit(SysGroupProd sysGroupProd,SysAdherGroupProd sysAdherGroupProd){
EntityManager em=getEntityManager();
EntityTransaction tx= em.getTransaction();
try{
tx.begin();
SysActivite activite =(SysActivite)this.find(SysActivite.class,sysGroupProd.getSysActivite().getIdActivite(),em);
sysGroupProd.setSysActivite(activite);
this.persist(sysGroupProd, em);
sysAdherGroupProd.setSysGroupProd(sysGroupProd);
SysAdherent adherent=(SysAdherent)this.find(SysAdherent.class,sysAdherGroupProd.getSysAdherent().getIdAdherent(), em);
sysAdherGroupProd.setSysAdherent(adherent);