[ http://issues.apache.org/struts/browse/STR-1280?page=all ]
David Evans reopened STR-1280:
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Assign To: (was: Struts Developer Mailing List)
> bean:message could be more power with little effort
> ---------------------------------------------------
>
> Key: STR-1280
> URL: http://issues.apache.org/struts/browse/STR-1280
> Project: Struts Action 1
> Type: Improvement
> Components: Taglibs
> Versions: 1.1 RC1
> Environment: Operating System: All
> Platform: All
> Reporter: William A. McArthur, Jr
> Priority: Minor
>
> A lot of power in the bean:message taglib is lost because the setters/getters
> for the arg0 though arg4 take java.lang.String arguments instead of
> java.lang.Object. This is because it makes it impossible to pass a subclass of
> java.lang.Number as one of the arguments.
> For example if in my app's Message.properties I have the property:
> how.many.messages={0,choice,0#No messages|1#One message|1<Lots of messages}
> and I use the bean:message taglib in the following way:
> <bean:message key="how.many.messages" arg0="<%= "12" %>"/>
> The java.text.ChoiceFormat fails in the method
> java.text.NumberFormat.format(Object,StringBuffer,FieldPosition) with a
> "java.lang.IllegalArgumentException: Cannot format given Object as a Number"
> because "12" is a string and not a subclass of Number.
> If I use the bean:message taglib in the following way:
> <bean:message key="how.many.messages" arg0="<%= new Integer(12) %>"/>
> The JSP fails to compile because there is no way to cast an Integer to a
> String.
> I really wish it wasn't so but I understand it's probably too late in the game
> to get this change made by Struts 1.1. It would be nice that if in the
> documentation a note is added mentioning that the bean:message taglib only
> allows only very simplistic parametric replacement so people like myself don't
> assume we have access to the full power of java.text.MessageFormat and waste a
> few hours trying to figure out why things are breaking.
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