[jboss-user] [JBoss Seam] - BigDecimal and JSF <f:convertNumber>

[tynor]

Seam 1.2.1-GA, JSF 1.2, JBoss 4.2.1-GA

I have some properties of type BigDecimal that I need to display with commas (e.g.  300,000.00).  I can't use f:convertNumber's pattern: 

<h:inputText id="#{id}" size="10" value="#{value}" required="#{required}">
  |     <f:convertNumber pattern="#,##0.00" />
  | </h:inputText>
  | 

since this results in a runtime error -- f:convertNumber creates a java.lang.Number -- which, sadly, BigDecimal does not conform to.  

/WEB-INF/facelets/tags/inputCurrency.xhtml @15,76 
  | value="#{value}": /capital/CapitalCallEdit.xhtml @37,81 
  | value="#{capitalCallHome.instance.callAmount}": 
  | java.lang.IllegalArgumentException: argument type mismatch

It's trying to pass a Long to the setCallAmount(BigDecimal val) setter: 

NativeMethodAccessorImpl.invoke0(Method, Object, Object[]) line: not available [native method]	
  | NativeMethodAccessorImpl.invoke(Object, Object[]) line: 39	
  | DelegatingMethodAccessorImpl.invoke(Object, Object[]) line: 25	
  | Method.invoke(Object, Object...) line: 585	
  | BeanELResolver.setValue(ELContext, Object, Object, Object) line: 108	
  | FacesCompositeELResolver(CompositeELResolver).setValue(ELContext, Object, Object, Object) line: 68	
  | FacesCompositeELResolver.setValue(ELContext, Object, Object, Object) line: 93	
  | AstValue.setValue(EvaluationContext, Object) line: 114	
  | ValueExpressionImpl.setValue(ELContext, Object) line: 249	
  | TagValueExpression.setValue(ELContext, Object) line: 93	
  | AstIdentifier.setValue(EvaluationContext, Object) line: 66	
  | ValueExpressionImpl.setValue(ELContext, Object) line: 249	
  | TagValueExpression.setValue(ELContext, Object) line: 93	
  | HtmlInputText(UIInput).updateModel(FacesContext) line: 765	
  | HtmlInputText(UIInput).processUpdates(FacesContext) line: 697	
  | UIValidateAll(UIComponentBase).processUpdates(FacesContext) line: 1056	
  | UIDecorate(UIComponentBase).processUpdates(FacesContext) line: 1056	
  | HtmlPanel(UIComponentBase).processUpdates(FacesContext) line: 1056	
  | ...

Is this a bug?  I'm not certain - the Core JSF book (Geary/Horstman) suggests that f:convertNumber should work with BigDecimal in JSF 1.2, but  I can't find any specific example that explicitly shows it should work.

I can't find a way to use NumberFormat-style conversions with BigDecimal with any off the shelf converters.  

This seems to be something that many others would have encountered before me -- can anyone point me to a way to convert BigDecimal with a pattern format?  


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