Custom validator not validating

[Michal Glowacki]

Hi

I made my own validator of validate numeric input in h:datatable. It looks like this:

public class MyValidator implements Validator {
    public void validate(FacesContext fc, UIComponent comp, Object value)
            throws ValidatorException {
        if(value == null || value.toString().length() == 0) {
            System.out.println("ValidatorException");
            throw new ValidatorException(new FacesMessage(
                    "Fill in all values."));
        }
        String numString = null;
        double num = 0;
        if(!(value instanceof Double)) {
            numString = (String)value;
            try {
                num = Double.parseDouble(numString.replace(",","."));
            } catch(NumberFormatException ex) {
                System.out.println("ValidatorException");
                throw new ValidatorException(new FacesMessage(
                        "Enter correct value."));
            }
        } else
            num = ((Double)value).doubleValue();
        
        if(num < 1.0) {
            System.out.println("ValidatorException");
                throw new ValidatorException(new FacesMessage(
                    "Value cannot be lower than 1.00"));
        }
    }
}    

JSP:

 
<h:dataTable ...>
<h:column>
<h:inputText binding="#{pageBean.newValueText}" id="newValueText" style="width: 40px" value="#{currentRow1['value']}" tabindex="#{300+dataTable.rowIndex}">
                                                        <f:validator validatorId="MyValidator"/>
                                                    </h:inputText>              
</h:column>
   

and in faces-config.xml

  <faces-config>
  ...  
  <validator>
    <validator-id>MyValidator</validator-id>
    <validator-class>mypackage.tools.MyValidator</validator-class>
  </validator>
</faces-config>  

I debug the application, and validator is used only for valid (what for...) values. When I got 3 rows in datatable and enter -2, 3, 4 only for the last two fields validate method is invoked. This results in allowing bad data. What can be wrong?

Regards,
Michal

PS. I use ajax4jsf and a4j:commandButton to submit data. And of course I have no other validation errors on the page.