dev@javaserverfaces.java.net

Re: NumberConverter using buggy NumberFormat ?

From: Ryan Lubke <Ryan.Lubke_at_Sun.COM>
Date: Fri, 30 Nov 2007 11:55:05 -0800

Matthias Wessendorf wrote:
> thx,
>
> did you guys worked around it ?
>
 From a faces perspective, no, not yet.
Will be thinking about it though, and will post here if/when I have some
ideas. If anyone else has ideas, don't be shy.

> -m
>
> On Nov 30, 2007 7:53 PM, Ryan Lubke <Ryan.Lubke_at_sun.com> wrote:
>
>> Matthias Wessendorf wrote:
>>
>>> Hi Ryan,
>>>
>>> I noticed some strange things, when using the NumberConverter for:
>>> -currency
>>> -fr_FR locale
>>>
>>> I guess it is a bug in the underlying JDK (1.5.0_11 I am using)........
>>>
>>> I did a quick JUnit test-case against the MyFaces API (which contains
>>> the *base* number-converter)
>>>
>>> protected void setUp() throws Exception
>>> {
>>> super.setUp();
>>>
>>> mock = new NumberConverter();
>>> mock.setLocale(Locale.FRANCE);
>>> FacesContext.getCurrentInstance().getViewRoot().setLocale(Locale.GERMANY);
>>> }
>>>
>>> public void testFranceLocale()
>>> {
>>> UIInput input = new UIInput();
>>> mock.setType("currency");
>>> Number number = (Number)
>>> mock.getAsObject(FacesContext.getCurrentInstance(), input, "12 345,68
>>> ");
>>> assertNotNull(number);
>>> }
>>>
>>> And............ it fails :-)
>>>
>>> So... what is the work-around?
>>> I assume it is not to not use fr_FR :-))
>>>
>>> Also, a simple Java-test fails and shows why:
>>>
>>> Doing this:
>>>
>>> String va = "12 345,68 ";
>>> NumberFormat nf = NumberFormat.getCurrencyInstance(Locale.FRANCE);
>>> Number n = (Number) nf.parseObject(va);
>>>
>>> and you'll see that n is NULL.
>>>
>>> Why?
>>> So, here it is:
>>> the String va contains two blanks (" "), which are between 2 and 3, and
>>> between 8 and as well.
>>>
>>> In fr_FR, however, the *grouping separator * is not " ", but it is a
>>> special char for blank (\u00a0).
>>> So, my little test will pass, when the first BLANK is replaced by the
>>> special char...
>>>
>>> I thought, that the NumberFormat actually does parse the object for me!!
>>> Looks like for the "fr_FR" locale, I have to create a *custom parser*...
>>> Which is odd, IMO
>>>
>>> Now, do this:
>>>
>>> String va1 = "12 345,68 ";
>>> NumberFormat nf = NumberFormat.getCurrencyInstance(Locale.FRANCE);
>>> String va2 = nf.format(12345.68));
>>> System.out.println(va1.equals(va2));
>>>
>>> and you see, what the issue from another side :-)
>>>
>>> Any ideas?
>>> (Or perhaps known bugs?)
>>>
>>> Thx,
>>> Matthias
>>>
>>>
>>>
>> Hi Mathias,
>>
>> This looks pretty similar to http://bugs.sun.com/view_bug.do?bug_id=6318800
>>
>>
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