detached entity passed to persist

[kaviarasu]

hi im using two tables where Table1 refers Table2 by manytoOne annotation

here im using the following code to insert in primary and secondry table

when the register() is called it insert in the database

when the String edit() method is called it edit the particular review and update the review

then for second time register() is called

detached entity passed to persist entity.beans.TblReviews

error comes ......


how to over come this

even i used

em.flush();
 em.refresh(tr);

still the error comes how to reoslve this

@Stateful

@Name("search")
public class SearchAction
 implements Search,
 Serializable
{
 static final long serialVersionUID = -6536629890251170098L;

 @PersistenceContext
 EntityManager em;

 @RequestParameter
 BigDecimal id;

 @RequestParameter
 BigDecimal revid;


 @Out(required=false)
 TblProducts pro;

 @DataModel
 private List rev;

 @Out(required=false)
 Long rid4comm1;

 @In (required=false)
 Identity identity;

 TblReviews tr=new TblReviews();
 @In(required=false)
 @Out(required=false)
 TblUserReviews tblu;

 @Out(required=false)
 List<TblUserReviews> editreview;

 @Begin(join=true)
 public void selectFromRequest() {

 if (id != null) {
 pro = em.find(TblProducts.class, id);
 details = em.createQuery("select s from SearchBean s where s.storeProductId in (select st2.storeProductId from TblProductStore st2 where st2.productId="+id+")").getResultList();
 rev= em.createQuery("select p from TblReviews p where productId="+id+"").getResultList();

 }
 }
 @Begin(join=true)
 public String register() {
 tr.setProductId(pro);
 tr.setUserId(identity.getUsername());
 Set<TblUserReviews> tblUserReviewsCollection= new TreeSet<TblUserReviews>();
 tblu.setReviewEntryId(tr);
 tblUserReviewsCollection.add(tblu);
 tr.setTblUserReviewsCollection(tblUserReviewsCollection);
 em.persist(tr);
 em.flush();
 em.refresh(tr);
 return "/prodis.xhtml";
 }
 @Begin(join=true)
 public String edit() {
 em.merge(tblu);
 return "/prodis.xhtml";
 }

 @Begin(join=true)
 public void editReview(){
 editreview= (List<TblUserReviews>) em.createQuery("select p from TblUserReviews p where userReviewId="+revid+"").getResultList();
 tblu = (TblUserReviews) editreview.get(0);
 }
 @End
 public void reset() {}

 @Destroy
 @Remove
 public void destroy() {}

}

thank u regards
kavi