Policy failures:

Code warning
- failed on resource ArticleManagerBean.java. Reason: Type safety: The expression of type List needs unchecked conversion to conform to List<Delegation>, line 24
Override reason:   
fds

YACOSCore/ejbModule/org/yacos/core/article/ArticleManagerBean.java

@@ -242,6 +242,11 @@ public class ArticleManagerBean implements IArticleManager, Serializable {
 		try{
 			ut.begin();
 			Article article = this.getArticle(articleId);
+			//si la delegation est d<>j<EFBFBD> faite , on remplace le referee
+			Query q = em.createQuery("from Delegation where article = ?");
+			q.setParameter(1, article);
+			List<Delegation> delegations = q.getResultList();
+			if(delegations.isEmpty()){
 				User PCMember = em.find(User.class, memberId);
 				User referee = em.find(User.class, refereeId);
 				Delegation delegation = new Delegation();
@@ -249,7 +254,9 @@ public class ArticleManagerBean implements IArticleManager, Serializable {
 				delegation.setPcMember(PCMember);
 				delegation.setReferee(referee);
 				em.persist(delegation);
+			}
 				ut.commit();
+			
 		} catch (Exception e) {
 			try{
 				ut.rollback();