Do this:
private Converter myConverter = new MyConverter();
public Converter getMyConverter()
{
return myConverter;
}
then, converter="#{myBean.myConverter}" in your jsp.
On Fri, 18 Mar 2005 18:13:51 +0000, Kostas Karadamoglou
<[EMAIL PROTECTED]> wrote:
> How? I didn't understand it. Can you please give me an example?
> Heath Borders wrote:
>
> >Here's another option. Rather than making the converter a faces
> >managed bean, you can make it an instance variable of yoru event
> >handler. Try that and see if it works better.
> >
> >
> >On Fri, 18 Mar 2005 17:30:41 +0000, Kostas Karadamoglou
> ><[EMAIL PROTECTED]> wrote:
> >
> >
> >>Couldn't it be consindered as a bug?
> >>Does anyone eles have the same problem?
> >>
> >>Heath Borders wrote:
> >>
> >>
> >>
> >>>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]
