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From "Simon Matic Langford" <simon.langf...@pcmsgroup.com>
Subject RE: i18n input
Date Mon, 06 Dec 2004 16:07:04 GMT
I changed the implementation of the validateNumber etc validation
functions in
struts to versions which take account of locale, but driven off the same
file.

the translator assumes that by the time it has got it for population, it
will be 
correct, if there is any error, then it reverts back to the entered
value rather
than throw an exception...

simon
 

> -----Original Message-----
> From: Huw Richards [mailto:huw.richards@oprig.com] 
> Sent: 06 December 2004 16:05
> To: Struts Users Mailing List
> Subject: RE: i18n input
> 
> 
> So does your translation code handle user input errors, like 
> a number/date
> in wrong format or does it make a "best guess"? 
> 
> Do you keep your translations.xml file upto date by hand or use ant to
> generate at build time? My app has hundreds of forms with multiple
> date/number fields.
> 
> I hadn't thought of extending the html:input & bean:write 
> tags to include a
> locale for formatting. Great idea! I convert the BigDecimals 
> into a locale
> formatted String for html:input and use the formatKey 
> variable of bean:write
> for display.
> 
> -----Original Message-----
> From: Simon Matic Langford [mailto:simon.langford@pcmsgroup.com] 
> Sent: Monday, December 06, 2004 7:03 AM
> To: 'Struts Users Mailing List'
> Subject: RE: i18n input
> 
> 
> 
> ___________________________________________________________
> 
> *** WARNING ***
> 
> This email has been received from the internet. 
> Check any attachments for viruses before opening them. 
> ___________________________________________________________
> 
> 
> hmm, that's what I've been trying to avoid.
> 
> I went for a somewhat sicker route :-)
> 
> I extended the request processor, so it called a new method called
> processTranslate() just
> after the validator is called! This then does exactly the same as the
> population of the form
> beans, but calls a translation routine to convert from the locale
> specific format to the system
> format which is english (a la BigDecimal). This seems to work 
> fine, but
> means there is a separate
> xml file to keep up to date, this looks like:
> 
> <?xml version="1.0"?>
> 
> <translations>
>   <!-- Types -->
>   <custom-type name="price" formatter="DecimalFormat"
> application-pattern="####################0.##">
>     <input-pattern value="####################0.##"/>
>     <output-pattern value="####################0.00"/>
>   </custom-type>
>   <custom-type name="ordernumber" formatter="DecimalFormat"
> application-pattern="####################0">
>     <input-pattern value="#,###,###,##0"/>
>     <output-pattern value="0,000,000,000"/>
>   </custom-type>
>   <custom-type name="quantity" formatter="DecimalFormat"
> application-pattern="####################0.##">
>     <pattern value="####################0.##"/>
>   </custom-type>
>   <custom-type name="integerquantity" formatter="DecimalFormat"
> application-pattern="####################0">
>     <pattern value="####################0"/>
>   </custom-type>
>   <custom-type name="percent" formatter="DecimalFormat"
> application-pattern="####################0.##">
>     <pattern value="####################0.##"/>
>   </custom-type>
>   <custom-type name="date" formatter="SimpleDateFormat"
> application-pattern="dd/MM/yyyy">
>     <pattern value="dd/MM/yyyy"/>
>     <pattern value="dd.MM.yyyy" language="de" country="DE"/>
>     <pattern value="dd.MM.yyyy" language="de" country="AT"/>
>   </custom-type>
>   <custom-type name="time" formatter="SimpleDateFormat"
> application-pattern="HH:mm">
>     <pattern value="HH:mm"/>
>   </custom-type>
>   <!-- Form beans -->
>   <form-bean class="com.pcmsgroup.SomeFormBean">
>     <property name="price.value" type="price"/>
>     <property name="quantity.value" type="quantity"/>
>   </form-bean>
> </translations>
> 
> I've also extended the html:text and bean:write tags to translate back
> the other way, which uses the same
> translation utility. I gather that FormDef does most of this already,
> but we can't use it unfortunately...
> 
> Does anyone think this code is useful generally?
> 
> Simon
> 
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>  
> 
> > -----Original Message-----
> > From: Huw Richards [mailto:huw.richards@oprig.com] 
> > Sent: 06 December 2004 11:55
> > To: Struts Users Mailing List
> > Subject: RE: i18n input
> > 
> > 
> > Hi
> > 
> > It was something along those lines. 
> > 
> > My business objects tend to have convert methods where I take 
> > the strings of
> > the value object (which have been created in the Action from 
> > the form) and
> > turn them into their correct types. I have a NumberUtil class 
> > which I use
> > for converting locale specific strings into BigDecimal. This 
> > NumberUtil
> > class has a static method which takes a String and a Locale 
> > as parameters
> > and returns a BigDecimal.
> > 
> > Huw
> > 
> > -----Original Message-----
> > From: Simon Matic Langford [mailto:simon.langford@pcmsgroup.com] 
> > Sent: Monday, December 06, 2004 5:05 AM
> > To: 'Struts Users Mailing List'
> > Subject: RE: i18n input
> > 
> > 
> > 
> > ___________________________________________________________
> > 
> > *** WARNING ***
> > 
> > This email has been received from the internet. 
> > Check any attachments for viruses before opening them. 
> > ___________________________________________________________
> > 
> > 
> > huw,
> > 
> > how did you handle this input on the server side? did you have some
> > cunning scheme
> > or just a lot of
> > NumberFormat.getNumberInstance(request.getLocale()).parse(form
> > Bean.getFi
> > eld())?
> > 
> > thanks
> > 
> > simon
> >  
> > 
> > > -----Original Message-----
> > > From: Huw Richards [mailto:huw.richards@oprig.com] 
> > > Sent: 03 December 2004 23:05
> > > To: Struts Users Mailing List
> > > Subject: RE: i18n input
> > > 
> > > 
> > > The one problem I had with i18n input was with European 
> > > locales where "," is
> > > used as the decimal separator. The number would be formatted 
> > > with "," as the
> > > decimal separator but as the input boxes are just text, the 
> > > numeric keypad
> > > which produces "," in excel when "." is pressed just produces 
> > > "." in the
> > > number box. I had to rely on an adapted javascript to mask 
> > > the numbers on
> > > field entry & exit.
> > > 
> > > -----Original Message-----
> > > From: Jim Barrows [mailto:jbarrows@sssc.com] 
> > > Sent: Friday, December 03, 2004 11:00 AM
> > > To: Struts Users Mailing List
> > > Subject: RE: i18n input
> > > 
> > > 
> > > 
> > > ___________________________________________________________
> > > 
> > > *** WARNING ***
> > > 
> > > This email has been received from the internet. 
> > > Check any attachments for viruses before opening them. 
> > > ___________________________________________________________
> > > 
> > > 
> > > 
> > > 
> > > > -----Original Message-----
> > > > From: Simon Matic Langford [mailto:simon.langford@pcmsgroup.com]
> > > > Sent: Friday, December 03, 2004 8:51 AM
> > > > To: 'Struts Users Mailing List'
> > > > Subject: RE: i18n input
> > > > 
> > > > 
> > > > yeah, I know I can do this, but this is a large system with 
> > > around 200
> > > > jsps 80 views
> > > > and a number of controllers. doing the display is 
> > > reasonably simple I
> > > > know, but extremely
> > > > tedious and prone to errors, I was hoping for a more 
> > > elegant solution
> > > > which also handles
> > > > input...
> > > 
> > > I believe it does handle input as well... depending on the 
> > > browser, which
> > > java has no control over.  
> > > 
> > > > > 
> > > > > Java comes with i18n built in.  You want the JSTL <fmt:blah 
> > > > > for output and look at the way message resources are handled 
> > > > > in struts, as well as read through the i18n documentation on 
> > > > > the sun site.
> > > > 
> > > > 
> > > > 
> > > 
> > 
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> > > 
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