[jboss-user] [JBoss Seam] - Re: always got data model update error when enum happens in

[ellenzhao]

Voila! Thanks for the hint and now it is working perfectly. 

My solution is based on hotchai's solution here:

http://jroller.com/page/hotchai?entry=jsf_converter_for_jdk_1

(I am using Seam 1.1 beta 2 and all the example source code are from Seam 1.1 beta 2 as well)

The EnumConverter class can be used as it is, no need to modify and it simply works. 

Here is my Enum classes:

  | public class User implements Serializable {
  |   // same as the booking sample
  |   public static enum Gender{
  |     FEMALE("female"), MALE("male");
  |     private String label;
  |     
  |     Gender(String label){
  |       this.label = label;
  |     }
  |     
  |     public String getLabel(){
  |       return this.label;
  |     }    
  |   }
  |   
  |   public static enum Title {
  |     DR("Dr."), MS("Ms."), MR("Mr."), MRS("Mrs.");
  |     private String label;
  | 
  |     Title(String label) {
  |       this.label = label;
  |     }
  | 
  |     public String getLabel() {
  |       return this.label;
  |     }
  |   }
  | }
  | 
  | here is the code from backing bean:
  | 
  | @Stateful
  | @Scope(EVENT)
  | @Name("register")
  | public class RegisterBacking implements Register {
  |   //...
  |   private SelectItem[]            titleItems;
  |   private SelectItem[]            genderItems;
  | 
  | //... same as the booking example
  | public SelectItem[] getTitleItems() {
  |     this.titleItems = new SelectItem[Title.values().length];
  |     int i = 0;
  |     for (Title t : Title.values()) {
  |       this.titleItems[i++] = new SelectItem(t, t.getLabel());
  |     }
  |     return this.titleItems;
  |   }
  | 
  |   public SelectItem[] getGenderItems() {
  |     this.genderItems = new SelectItem[Gender.values().length];
  |     int i = 0;
  |     for (Gender g : Gender.values()) {
  |       this.genderItems[i++] = new SelectItem(g, g.getLabel());
  |     }
  |     return this.genderItems;
  |   }
  | }
  | 
  | The code in register.xhtml:
  | 
  | <div class="entry">
  | 				<div class="label"><h:outputLabel for="title">Title:</h:outputLabel></div>
  | 				<div class="input"><s:decorate>
  | 					<h:selectOneMenu id="title" value="#{guest.title}" required="true">
  | 						<f:selectItems value="#{register.titleItems}" />
  | 					</h:selectOneMenu>
  | 					<br />
  | 				</s:decorate></div>
  | 				</div>
  | 
  | <div class="entry">
  | 				<div class="label"><h:outputLabel for="gender">Gender:</h:outputLabel></div>
  | 				<div class="input"><s:decorate>
  | 					<h:selectOneMenu id="gender" value="#{guest.gender}"
  | 						required="true">
  | 						<f:selectItems value="#{register.genderItems}" />
  | 					</h:selectOneMenu>
  | 					<br />
  | 				</s:decorate></div>
  | 				</div>
  | 
  | 

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