convertnumber argument type mismatch

[ajanz]

i got a simple page with an inputtext and a convertnumber. but i only could bind it to a property of primitve type double, if i use Double i got  "argument type mismatch"

i use Sun's JSF 1.2_12  and Seam 2.0.2 SP1

my page is

<?xml version="1.0" encoding="ISO-8859-1"?>
<ui:composition  xmlns="http://www.w3.org/1999/xhtml"
                 xmlns:ui="http://java.sun.com/jsf/facelets"
                 xmlns:h="http://java.sun.com/jsf/html"
                 xmlns:f="http://java.sun.com/jsf/core"
                 xmlns:rich="http://richfaces.org/rich"
                 xmlns:a4j="http://richfaces.org/a4j"
                 xmlns:s="http://jboss.com/products/seam/taglib">



<a4j:form>


<rich:panel>
<rich:messages id="messages"  />
<br/>
<h:inputText value="#{TestBean.d1}"  >
   <f:convertNumber maxFractionDigits="3" minFractionDigits="2" minIntegerDigits="1" maxIntegerDigits="15"
                       groupingUsed="true"                 
                       />
                       </h:inputText>
<h:commandButton value="Submit" ></h:commandButton>
</rich:panel>
</a4j:form> 
</ui:composition>

bean code is


@Name("TestBean")
@Scope(ScopeType.PAGE)
public class TestBean {
     
     boolean disabled= false;
     
     public boolean isDisabled() {
          System.out.println("isdisabled=" + disabled);
          return disabled;
     }

     public void setDisabled(boolean disabled) {
          this.disabled = disabled;
     }

     public void switchdis(){
          System.out.println("switchdis!!!!");
          disabled =!disabled;
     }
     
     Double d1;
     public Double getD1() {
          return d1;
     }

     public void setD1(Double d1) {
          this.d1 = d1;
     }

     double d2;
     public double getD2() {
          return d2;
     }

     public void setD2(double d2) {
          this.d2 = d2;
     }

     
     

}


i must use Double because i must allow using null values

[ajanz]

finally...after struggling for days i got the answer...

it's nothing about seam

it's only jsf

1. According to JSF specification, if you use f:convertNumber, the type of the result depends on the input: if the user enters 0 you will get a Long, if he enters 0.1 you'll get a Double, no matter what you have on your bean. So the correct way to work with f:convertNumber (no matter what other attributes you use, like pattern, or so) is to use a Number on the backing bean, not Integer, or int, or float, or Float, or Double or anything like that.
2. If you use f:convert id="javax.faces.Double" or the converter attribute in the input controls you will always get a Double, but then you cannot specify any formatting.

so usinger Number solved my problem

[kidala]

Thank you Sasha for your investigation!!

I had the same problem and your post helped me!!

Thanks a lot!!