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From Huw Richards <huw.richa...@oprig.com>
Subject RE: i18n input
Date Mon, 06 Dec 2004 16:05:15 GMT
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



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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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> > 
> > ___________________________________________________________ 
> > 
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> 
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> 
> ___________________________________________________________ 
> 
> CONFIDENTIALITY NOTE 
> 
> This message may contain confidential and privileged information. 
> If you think, for any reason, that this message may have been 
> addressed to you in error, you must not disseminate, copy or 
> take any action in reliance on it and we would ask you to notify us 
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http://www.oprig.com 


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___________________________________________________________ 

CONFIDENTIALITY NOTE 

This message may contain confidential and privileged information. 
If you think, for any reason, that this message may have been 
addressed to you in error, you must not disseminate, copy or 
take any action in reliance on it and we would ask you to notify us 
immediately by return email to "postmaster@oprig.com". 

http://www.oprig.com 


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