[jboss-user] [JBoss Seam] - selectManyListbox and SelectItem error

[mgervais]

Hi,
I'm trying to use two selectManyListBox to assign a list of roles to a user.

  | <h:selectManyListbox value="#{rolemanager.source}" converter="#{rolemanager.converter}" size="5">
  | 								        <f:selectItems value="#{rolemanager.items}" />
  | 								    </h:selectManyListbox>
  | 								 
  | 								    <h:commandButton value="add" action="#{rolemanager.add}" />
  | 								    <h:commandButton value="remove" action="#{rolemanager.remove}" />
  | 								 
  | 								    <h:selectManyListbox value="#{rolemanager.selected}" converter="#{rolemanager.converter}" size="5">
  | 								        <f:selectItems value="#{rolemanager.destination}" />
  | 								    </h:selectManyListbox>
  | 

when I click on "Add", the list "source" in role manager is a list of Role and not a list of SelectItem, I'd like to know if it's a normal behaviour... I expect to have a List of SelectItem...
the Complte code is 

RoleManager.java

  | @Stateful
  | @Scope(SESSION)
  | @Name("rolemanager")
  | public class RoleManagerBean implements RoleManager {
  | 	
  | 	@In(value="agaetisDatabase")
  | 	private EntityManager em;
  | 	
  | 	@EJB
  | 	private CompanyFacade company;
  | 	
  | 	private List<Role> roles;
  | 	
  | 	private List<SelectItem> items;
  | 	
  | 	private List<SelectItem> source=new ArrayList<SelectItem>();
  | 	
  | 	private List<SelectItem> destination=new ArrayList<SelectItem>();
  | 	
  | 	private List<SelectItem> selected=new ArrayList<SelectItem>();
  | 	
  | 	@Create
  |     public void loadData() {
  | 		roles = company.findAllRoles(em);
  | 		
  | 		items=new ArrayList<SelectItem>(roles.size());
  | 		for(Role role : roles)
  | 			items.add(new SelectItem(role, role.getRole()));
  |     }
  | 	
  | 	public List<Role> getRoles() {
  | 		return roles;
  | 	}
  | 	
  | 	public Converter getConverter() {
  | 		
  | 		return new Converter(){
  | 			public Object getAsObject(FacesContext context, UIComponent component, String value) throws ConverterException {
  | 				if(value==null)
  | 					return null;
  | 				
  | 				for(Role role : roles)
  | 					if(role.getRole().equals(value))
  | 						return role;
  | 				return null;
  | 			}
  | 			public String getAsString(FacesContext context, UIComponent component, Object value) throws ConverterException {
  | 				return value==null ? null : ((Role)value).getRole();
  | 			}
  | 		};
  | 	}
  | 
  | 	public List<SelectItem> getItems() {
  | 		return items;
  | 	}
  | 	
  | 	public void setItems(List<SelectItem> items) {
  | 		this.items = items;
  | 	}
  | 	
  | 	public List<SelectItem> getDestination() {
  | 		return destination;
  | 	}
  | 	
  | 	public void setDestination(List<SelectItem> destination) {
  | 		this.destination=destination;		
  | 	}
  | 	
  | 	public List<SelectItem> getSource() {
  | 		return source;
  | 	}
  | 	
  | 	public void setSource(List<SelectItem> source) {
  | 		this.source=source;		
  | 	}
  | 	
  | 	public void setSelected(List<SelectItem> selected) {
  | 		this.selected = selected;
  | 	}
  | 	
  | 	public List<SelectItem> getSelected() {
  | 		return selected;
  | 	}
  | 	
  | 	public void add() {
  | 		destination.addAll(source);
  | 		source.clear();
  | 	}
  | 	
  | 	public void remove() {
  | 		source.addAll(destination);
  | 		destination.clear();
  | 	}
  | 	
  | 	@Destroy
  | 	@Remove
  | 	public void destroy() {
  | 	}
  | 
  | 	public void processValueChange(ValueChangeEvent event) throws AbortProcessingException {
  | 		System.out.println(event);		
  | 	}
  | }
  | 

Role.java

  | @Entity
  | @Table
  | @Scope(SESSION)
  | @NamedQueries({@NamedQuery(name = MappedQueries.ROLE_QUERY_FIND_BY_ROLE, query = "select r from Role r where r.role=:role") })
  | public class Role implements java.io.Serializable {
  | 
  | 	private static final long serialVersionUID = 2;
  | 
  | 	@Id
  | 	@GeneratedValue(strategy = GenerationType.IDENTITY)
  | 	@Column(precision = 3, scale = 0)
  | 	private short idrole;
  | 
  | 	@NotNull
  | 	@Length(max=70)
  | 	@Column(unique = true, nullable = false, length = 70)
  | 	private String role;
  | 
  | 	@Length(max=200)
  | 	@Column(length = 200)
  | 	private String description;
  | 
  | 	@ManyToMany(mappedBy = "roles")
  | 	private List<User> users;
  | 
  | 	public Role() {
  | 	}
  | 
  | 	public Role(String role) {
  | 		this.role = role;
  | 	}
  | 
  | 	public Role(String role, String description) {
  | 		this(role);
  | 		this.description = description;
  | 	}
  | 
  | 	public short getIdrole() {
  | 		return idrole;
  | 	}
  | 
  | 	public void setIdrole(short idrole) {
  | 		this.idrole = idrole;
  | 	}
  | 
  | 	public String getRole() {
  | 		return role;
  | 	}
  | 
  | 	public void setRole(String role) {
  | 		this.role = role;
  | 	}
  | 
  | 	public String getDescription() {
  | 		return description;
  | 	}
  | 
  | 	public void setDescription(String description) {
  | 		this.description = description;
  | 	}
  | 
  | 	public List<User> getUsers() {
  | 		if (users == null)
  | 			users = new Vector<User>(0);
  | 		return users;
  | 	}
  | 
  | 	public void setUsers(List<User> users) {
  | 		this.users = users;
  | 	}
  | 
  | 	/*
  | 	 * (non-Javadoc)
  | 	 * 
  | 	 * @see java.lang.Object#hashCode()
  | 	 */
  | 	@Override
  | 	public int hashCode() {
  | 		final int PRIME = 31;
  | 		int result = 1;
  | 		result = PRIME * result + idrole;
  | 		return result;
  | 	}
  | 
  | 	/*
  | 	 * (non-Javadoc)
  | 	 * 
  | 	 * @see java.lang.Object#equals(java.lang.Object)
  | 	 */
  | 	@Override
  | 	public boolean equals(Object obj) {
  | 		if (this == obj)
  | 			return true;
  | 		if (obj == null)
  | 			return false;
  | 		if (getClass() != obj.getClass())
  | 			return false;
  | 		final Role other = (Role) obj;
  | 		if (idrole != other.idrole)
  | 			return false;
  | 		return true;
  | 	}
  | 
  | 	@PrePersist
  | 	public void format() {
  | 		role = Formatter.captializeFirstLetter(role);
  | 	}
  | }

And the exception...

  | java.lang.IllegalArgumentException: Collection referenced by UISelectItems with binding '#{rolemanager.destination}' and Component-Path : {Component-Path : [Class: org.ajax4jsf.framework.ajax.AjaxViewRoot,ViewId: /credentials.xhtml][Class: javax.faces.component.html.HtmlForm,Id: credentials][Class: javax.faces.component.html.HtmlSelectManyListbox,Id: _id33][Class: javax.faces.component.UISelectItems,Id: _id34]} does not contain Objects of type SelectItem
  | 

Mickael

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