Question on Converter

[hasc]

Hello,

i defined a converter in faces-config.xml:

<converter>
 <converter-id>MyEntityConverter</converter-id>
 <converter-class>webapp.converter.MyEntityConverter</converter-class>
</converter>

and in the view i called it via:

<h:selectOneMenu converter="#{MyEntityConverter}">
 <s:selectItems value="#{itemsmanager.entities}" />
</h:selectOneMenu>

but it doesnt seem to use the converter.
Renaming the converter-id to something like "blabla" doesnt throw an error when the page is rendered. I also tried to reference it via "converter-for-class" with no effect.

Does defining Converters in faces-config.xml not work with seam or is there an error in the code?

I use JBoss-4.0.5.GA
with seam 1.2.0.Patch1
with jsf 1.2 and facelets


Thanks for help,

hasc

[fhh]

Why is #{MyEntityConverter} an EL expression? This will (most likely) come out as null. So you are not setting a converter at all.

Regards

Felix

[hasc]

right. this was from a try to bind the converter via a getter method like in the dvd example.

i also tried it with:

<h:inputText id="EffectiveArea" value="#{calculator.area}">
 <f:converter converterId="AreaConverter"/>
</h:inputText>

or...

<h:inputText id="EffectiveArea" value="#{calculator.area}" converter="AreaConverter"/>

in faces-config there's:

<converter>
 <converter-id>AreaConverter</converter-id>
 <converter-class>my.webapp.converter.AreaConverter</converter-class>
</converter>

[hasc]

sorry i was wrong. it seems to use the converter.

i have a question regarding the converter.

#{calculator.area}

the expression references a property which is defined here:

@Stateful
class CalculatorBean implements Calculator

float area;
public void setArea(float area)
{
 this.area = area;
}

public float getArea()
{
 return area;
}

public void calculate(){do something}

now what i want is, that if the property area is not set, the form field should be empty.

if no converter is specified #{calculator.area} is rendered to "0.0".

I tried the following in the toString method of the AreaConverter class:

public String getAsString(FacesContext facesContext, UIComponent component, Object obj)
 {
 if(obj == null || obj.equals(0.0))
 {
 String str = "";
 return str;
 }

 return obj.toString();
 }

but it still returns "0.0"

has somone a hint why this happens?

[hasc]

public String getAsString(FacesContext facesContext, UIComponent component, Object obj)
{
 Float val = (Float) obj;

 if(val == null || val == 0)
 {
 String str = "";
 return str;
 }
 return obj.toString();
}

solved this question...