Need help with localed converter for BigDecimal

[bussard]

I was searching in many forums for I way to use localed <f:convertNumber> with BigDecimal and choose this old topic's approach.

After some work I created this:

import java.math.BigDecimal;
import java.util.Locale;

import javax.faces.component.UIComponent;
import javax.faces.context.FacesContext;
import javax.faces.convert.NumberConverter;

import org.jboss.seam.annotations.Name;
import org.jboss.seam.annotations.faces.Converter;
import org.jboss.seam.annotations.intercept.BypassInterceptors;

/**
 * Converts a Double or Long value provided by standard jsf number converter to
 * a BigDecimal value
 * 
 * To get a locale-sensitive converter, java.text.NumberFormat is used (through
 * javax.faces.convert.NumberConverter). The parsing done by
 * java.math.BigDecimal is not affected by locale. See
 * javax.faces.convert.BigDecimalConverter
 * 
 */
@Name("bigDecimalConverter")
@BypassInterceptors
@Converter
public class BigDecimalConverter extends NumberConverter {
     private static final String MIN_FRACTION_DIGITS = "minFractionDigits";
     private static final String MAX_FRACTION_DIGITS = "maxFractionDigits";
     private static final String LOCALE = "locale";

     @Override
     public Object getAsObject(FacesContext context, UIComponent component,
               String string) {

          Object ret = super.getAsObject(context, component, string);
          if (ret != null) {
               return new BigDecimal(ret.toString());
          }
          return null;
     }

     public String getAsString(FacesContext context, UIComponent component,
               Object value) {

          this.setMinFractionDigits(getMinFractionDigits(component));
          this.setMaxFractionDigits(getMaxFractionDigits(component));
          this.setLocale(getLocale(component));

          return super.getAsString(context, component, value);
     }

     private int getMinFractionDigits(UIComponent component) {
          Object att = component.getAttributes().get(MIN_FRACTION_DIGITS);
          if (att == null) {
               return 0;
          } else {
               return Integer.parseInt((String) component.getAttributes().get(
                         MIN_FRACTION_DIGITS));
          }
     }

     private int getMaxFractionDigits(UIComponent component) {
          Object att = component.getAttributes().get(MAX_FRACTION_DIGITS);
          if (att == null) {
               return 0;
          } else {
               return Integer.parseInt((String) component.getAttributes().get(
                         MAX_FRACTION_DIGITS));
          }
     }

     private Locale getLocale(UIComponent component) {
          Object att = component.getAttributes().get(LOCALE);
          if (att == null) {
               return null;
          } else {
               String language;
               String country = "";

               String strLocale = (String) component.getAttributes().get(LOCALE);

               if (strLocale.indexOf("_") > 0) {
                    String[] fld = strLocale.split("_");
                    language = fld[0];
                    country = fld[1];
               } else
                    language = strLocale;

               return new Locale(language, country);
          }
     }

}

It's supposed to be used like this :

<h:inputText id="idImputText" 
       value="#{entityHome.instance.instanceValue}"
        size="25"
        style="text-align: right;" >
    <f:converter converterId="bigDecimalConverter"/>
    <f:attribute name="minFractionDigits" value="2"/>
    <f:attribute name="maxFractionDigits" value="2"/>
    <f:attribute name="locale" value="pt_BR"/>
    
    <a:support event="onblur" reRender="valorOrcadoField" bypassUpdates="true" ajaxSingle="true"/>
</h:inputText>

Are there other less verbose and more elegant ways to do this ?