oh. Sorry I misunderstood your first email.
That means that there's something wrong with the selectOneMenu or something.
On Fri, 18 Mar 2005 16:22:42 +0000, Kostas Karadamoglou
<[EMAIL PROTECTED]> wrote:
> Yes but how can JSF call the getAsObject method of the converter with
> the str parameter equals to null !!!
>
> I checked the generated code and the all the option tags in the drop
> down menu have a value ("1","2","3","4","5" and so on)
> So how jsf returns a null string? thats the problem. :(
> Heath Borders wrote:
>
> >No, you don't want to do that. Otherwise, the category object will
> >not be properly set in his setter. The problem is definitely with
> >your converter. My guess is that its getting re-created between
> >requests, and thus the map is getting cleared. I couldn't tell you
> >why that's happening, though.
> >
> >
> >On Fri, 18 Mar 2005 11:05:23 -0500, Srikanth Madarapu
> ><[EMAIL PROTECTED]> wrote:
> >
> >
> >>Can you try
> >>
> >>this.allCategories.add(new SelectItem(category.getId(),
> >>category.getTitle()));
> >>
> >>The getId() method should return the same value as returned by
> >>getAsString(). I think there is some problem...
> >>
> >>Srikanth
> >>
> >>-----Original Message-----
> >>From: Kostas Karadamoglou [mailto:[EMAIL PROTECTED]
> >>Sent: Friday, March 18, 2005 10:56 AM
> >>To: MyFaces Discussion
> >>Subject: Re: Problem with the getAsObject of a Converter
> >>
> >>Hi, I attached the getter of allcategories, as you can see I return a
> >>list of selectItem objects
> >>
> >> public List getAllCategories(){
> >> if(this.allCategories==null){
> >> this.allCategories=new ArrayList();
> >> this.allCategories.add(new SelectItem(new Category(),"Choose
> >>a category..."));
> >> List categories=this.eventRegistry.getCategories();
> >> for(Iterator iter=categories.iterator(); iter.hasNext();){
> >> Category category=(Category)iter.next();
> >> this.allCategories.add(new SelectItem(category,
> >>category.getTitle()));
> >> }
> >> }
> >> return this.allCategories;
> >> }
> >>
> >>Srikanth Madarapu wrote:
> >>
> >>
> >>
> >>>What is the return type of allCategories ?
> >>>
> >>>The list coming from allCategories should be a list of "SelectItem"
> >>>objects, I think in yours case its just a list of Strings
> >>>
> >>>-Srikanth
> >>>
> >>>
> >>>-----Original Message-----
> >>>From: Kostas Karadamoglou [mailto:[EMAIL PROTECTED]
> >>>Sent: Friday, March 18, 2005 9:17 AM
> >>>To: [email protected]
> >>>Subject: Problem with the getAsObject of a Converter
> >>>
> >>>
> >>>Hi again!!!
> >>>
> >>>I have another problem now, Very strange Can you suggest me a solution?
> >>>
> >>>I created a converter for objects of type Category in order to display
> >>>some Category beans in a selectOneMenu tag.
> >>>
> >>>I have debuged the application and I noticed a strange behaviour of JSF
> >>>which I cannot understand.
> >>>Below I have the sequence explanation of the problem and the content of
> >>>each method and jsp fragment.
> >>>
> >>>1)The getAsString method works perfectly and returns the following
> >>>strings "0","1","2","3","4","5","6","7"
> >>>
> >>>2)The page is displayed properly, and I choose from the drop down menu a
> >>>category.
> >>>
> >>>2)Afterwords JSF invokes getAsObject (I think for the chosen option)
> >>>with the str parameter null !!!!!!!
> >>>In this situation I return a null object (which is wrong).
> >>>
> >>>4)After that when the page is redisplayed the getAsString throw an
> >>>Exception because of the null value
> >>>
> >>>JSP-------------------------------------------------------
> >>> <h:selectOneMenu id="selectCategory"
> >>>converter="#{categoryConverter}" value="#{eventHandler.selectedCategory}">
> >>> <f:selectItems id="allCategories"
> >>>value="#{eventHandler.allCategories}"/>
> >>> </h:selectOneMenu>
> >>>
> >>>getAsString------------------------------------------------
> >>>
> >>> public String getAsString(FacesContext facesContext, UIComponent
> >>>uIComponent, Object obj) throws ConverterException {
> >>> String retValue=null;
> >>> if(obj==null)
> >>> throw new ConverterException("not null object of type
> >>>Category expected");
> >>> else if(obj instanceof Category){
> >>> Category category=(Category)obj;
> >>> map.put(new Integer(category.getId()), category);
> >>> retValue=String.valueOf(category.getId());
> >>> }else{
> >>> throw new ConverterException("object of type Category
> >>>expected received: "+obj.getClass().getName()+"="+obj.toString());
> >>> }
> >>> return retValue;
> >>> }
> >>>
> >>>getAsObject------------------------------------------------
> >>>
> >>> public Object getAsObject(FacesContext facesContext, UIComponent
> >>>uIComponent, String str) throws ConverterException {
> >>> Category retValue=null;
> >>> if(str!=null){
> >>> try{
> >>> System.out.println(str);
> >>> Integer id=Integer.valueOf(str);
> >>> retValue=(Category)map.get(id);
> >>> }catch(Exception ex){
> >>> throw new ConverterException("a number formatted string
> >>>expected");
> >>> }
> >>>
> >>> }else{
> >>> //throw new ConverterException("a not null string expected");
> >>> return null;
> >>> }
> >>> return retValue;
> >>> }
> >>>
> >>>
> >>>
> >>>
> >>>
> >>
> >>
> >
> >
> >
> >
>
>
--
-Heath Borders-Wing
[EMAIL PROTECTED]
