diff --git a/YACOSCore/ejbModule/org/yacos/core/conferences/ConferenceManagerBean.java b/YACOSCore/ejbModule/org/yacos/core/conferences/ConferenceManagerBean.java
index 226a2ab..75b4215 100644
--- a/YACOSCore/ejbModule/org/yacos/core/conferences/ConferenceManagerBean.java
+++ b/YACOSCore/ejbModule/org/yacos/core/conferences/ConferenceManagerBean.java
@@ -1,6 +1,5 @@
 package org.yacos.core.conferences;
 
-import java.util.Collection;
 import java.util.Date;
 import java.util.List;
 
@@ -9,9 +8,10 @@ import javax.persistence.EntityManager;
 import javax.persistence.PersistenceContext;
 import javax.persistence.Query;
 
-import org.yacos.core.article.Article;
 import org.yacos.core.users.Role;
 import org.yacos.core.users.User;
+import org.yacos.core.users.Role.RoleType;
+
 
 @Stateless
 public class ConferenceManagerBean implements IConferenceManager {
@@ -42,34 +42,47 @@ public class ConferenceManagerBean implements IConferenceManager {
 		em.merge(conf);
 	}
 
+	/*
 	public List<Article> getArticles(Integer conference_id) {
 		//FIXME cast a verifier lors des tests
 		return getConference(conference_id).getArticles();
 	}
-
-	public void addArticle(User user) {
+*/
+	//FIXME
+	/*public void addArticle(User user) {
 		// TODO Auto-generated method stub
 		
+	}*/
+	
+	public List<Conference> getConferencesForUser(User user){
+		return user.getConferences();
 	}
-
-	public void addRoleForUser(Role.RoleType roleType, User user, Conference conf) {
+	
+	/* 
+	 * 
+	 * méthodes relatives aux roles
+	 * */
+	
+	public void addRole(Role.RoleType roleType, User user, Conference conf) {
 		Role role = new Role(roleType, user, conf);
 		em.persist(role);
 	}
 
+	public void removeRole(Role role) {
+		em.remove(role);
+	}
+
+	public void updateRole(Role role){
+		em.merge(role);
+	}
 	
+	@SuppressWarnings("unchecked")
 	public List<Role> getRoles(User user, Conference conf) {
 		 Query query = em.createQuery("from Role role where conference = ? and user = ?");
 		 query.setParameter(0, conf);
 		 query.setParameter(1, user);
-			
 		return query.getResultList();
 	}
-
-		
-	public void removeRoleForUser(Role role) {
-		// TODO Auto-generated method stub
-		
-	}
+	
 
 }
diff --git a/YACOSCore/ejbModule/org/yacos/core/conferences/IConferenceManager.java b/YACOSCore/ejbModule/org/yacos/core/conferences/IConferenceManager.java
index 8354d53..e2aae94 100644
--- a/YACOSCore/ejbModule/org/yacos/core/conferences/IConferenceManager.java
+++ b/YACOSCore/ejbModule/org/yacos/core/conferences/IConferenceManager.java
@@ -1,12 +1,10 @@
 package org.yacos.core.conferences;
 
-import java.util.Collection;
 import java.util.Date;
 import java.util.List;
 
 import javax.ejb.Remote;
 
-import org.yacos.core.article.Article;
 import org.yacos.core.users.Role;
 import org.yacos.core.users.User;
 
@@ -16,7 +14,7 @@ public interface IConferenceManager {
 	//CRUD methodes
 	public Conference addConference(String titre, String descirption, String infoComplementray, Date dataAbstract, Date dateArticle, Date dateEvaluation, Date dateStart, Date dateEnd);
 	public Conference getConference(Integer id);
-	public List<Conference> getConferences();
+	
 	public void remove(Conference conf);
 	public void update(Conference conf);
 	
@@ -24,10 +22,15 @@ public interface IConferenceManager {
 	//FIXME 
 	//methode a gicler ?
 	//public void addArticle(User user);
-	public Collection<Article> getArticles(Integer id);
+	//public Collection<Article> getArticles(Integer id);
+	
+	//list methodes
+	public List<Conference> getConferences();
+	public List<Conference> getConferencesForUser(User user);
 	
 	//role methode
-	public void addRoleForUser(Role.RoleType roleType, User user, Conference conf);
-	public void removeRoleForUser(Role role);
+	public void addRole(Role.RoleType roleType, User user, Conference conf);
+	public void removeRole(Role role);
 	public List<Role> getRoles(User user, Conference conf);
+	public void updateRole(Role role);
 }
diff --git a/YACOSCore/ejbModule/org/yacos/core/users/IUserManager.java b/YACOSCore/ejbModule/org/yacos/core/users/IUserManager.java
index 6edbaf5..d178abb 100644
--- a/YACOSCore/ejbModule/org/yacos/core/users/IUserManager.java
+++ b/YACOSCore/ejbModule/org/yacos/core/users/IUserManager.java
@@ -1,6 +1,6 @@
 package org.yacos.core.users;
 
-import java.util.Collection;
+import java.util.List;
 
 import javax.ejb.Remote;
 
@@ -10,7 +10,7 @@ import org.yacos.core.exceptions.PKAlreadyUsedException;
 public interface IUserManager {
 	
 	//crud methode
-	public Collection<User> getUsers();
+	public List<User> getUsers();
 	public User addUser(String login, String password, String firstName,
 			String lastName, String organization, String email) throws PKAlreadyUsedException;
 	public void removeUser(User user);
@@ -19,6 +19,7 @@ public interface IUserManager {
 	public Boolean exists(String login);
 
 	//role methode
-	public Collection<Role> getRoles();
+	public List<Role> getRoles();
+	
 		
 }
diff --git a/YACOSCore/ejbModule/org/yacos/core/users/User.java b/YACOSCore/ejbModule/org/yacos/core/users/User.java
index aa74f95..0f21f13 100644
--- a/YACOSCore/ejbModule/org/yacos/core/users/User.java
+++ b/YACOSCore/ejbModule/org/yacos/core/users/User.java
@@ -2,7 +2,7 @@ package org.yacos.core.users;
 
 import java.io.Serializable;
 import java.util.ArrayList;
-import java.util.Collection;
+import java.util.List;
 
 import javax.persistence.Column;
 import javax.persistence.Entity;
@@ -56,7 +56,7 @@ public class User implements Serializable{
 	 * Roles for this user
 	 */
 	@OneToMany(targetEntity=Role.class,mappedBy="user")
-	private Collection<Role> roles;
+	private List<Role> roles;
 	
 	public User(String login, String password, String firstName,
 			String lastName, String organization, String email) {
@@ -133,7 +133,7 @@ public class User implements Serializable{
 	}
 
 	@OneToMany(targetEntity=Role.class,mappedBy="user")
-	public Collection<Role> getRoles(){
+	public List<Role> getRoles(){
 		return roles;
 	}
 
@@ -156,12 +156,23 @@ public class User implements Serializable{
 	 * @param roles the roles to set
 	 */
 	@OneToMany(targetEntity=Role.class,mappedBy="user")
-	public void setRoles(Collection<Role> roles) {
+	public void setRoles(List<Role> roles) {
 		this.roles = roles;
 	}
 	
-	public void AddRole(Role role){
-		roles.add(role);	
+	
+	public List<Conference> getConferences(){
+		Conference conf;
+		List<Conference> list = new ArrayList<Conference>();
+		List<Role> tmpList = getRoles();
+	
+		for (Role role : tmpList) {
+			conf = role.getConference();
+			if(!list.contains(conf)){
+				list.add(conf);
+			}
+		}
+		return list;
 	}
 	
 }
diff --git a/YACOSCore/ejbModule/org/yacos/core/users/UserManagerBean.java b/YACOSCore/ejbModule/org/yacos/core/users/UserManagerBean.java
index cc24d36..6bf0839 100644
--- a/YACOSCore/ejbModule/org/yacos/core/users/UserManagerBean.java
+++ b/YACOSCore/ejbModule/org/yacos/core/users/UserManagerBean.java
@@ -3,7 +3,8 @@
  */
 package org.yacos.core.users;
 
-import java.util.Collection;
+
+import java.util.List;
 
 import javax.ejb.Stateless;
 import javax.persistence.EntityManager;
@@ -22,7 +23,7 @@ public class UserManagerBean implements IUserManager{
 	EntityManager em;
 	
 	@SuppressWarnings("unchecked")
-	public Collection<User> getUsers(){
+	public List<User> getUsers(){
 		Query query = em.createNativeQuery("from User", User.class);
 		return query.getResultList();
 	}
@@ -65,7 +66,7 @@ public class UserManagerBean implements IUserManager{
 	  return (this.getUser(login)!= null); 
 	}
 
-	public Collection<Role> getRoles() {
+	public List<Role> getRoles() {
 		// TODO Auto-generated method stub
 		return null;
 	}