Re: TextField w/ bean as model object?
Iam in hope duke you will share your solution with us ... Want to know it too
;)
igor.vaynberg wrote:
>
> there are two ways to do this
>
> either you do everything in the converter
>
> take the string and convert it into the area, if the zip is incorrect
> throw a conversion exception
>
> or you split the two
>
> have a converter that converts the string into the area and a
> validator that makes sure the area is valid
>
> -igor
>
>
> On Fri, Mar 12, 2010 at 10:03 AM, Nikita Tovstoles
> wrote:
>> I'd appreciate another pair of eyes on the following:
>>
>> I have a US ZIP Code input text field that I'd like to bind to an Area
>> bean. The idea is that the component would prompt/display for a 5-digit
>> zip
>> code but getModelObject() would return an Area:
>>
>> class ZipInput extends RequiredTextField;
>>
>> where Area is:
>>
>> class Area{
>> int zipcode;
>> UsState state; //enum
>> String city;
>> }
>>
>> there is also a AreaService service:
>>
>> //returns true only if zipCode is a valid US zip code
>> boolean isValidZipCode(int zipcode);
>>
>> //return Area bean for given zipCode; throws exception if 'zipCode' isn't
>> a
>> valid US Zip Code
>> Area getArea(int zipCode);
>>
>>
>> The component needs to:
>>
>> - validate that input is present (RequiredValidator?)
>> - convert input from String integer
>> - at some pt call AreaService.isValidZipCode (again, a validation task)
>> - call AreaService.getArea (a conversion task)
>>
>>
>> My main problem is that it seems like AreaService.getArea() should be
>> wrapped into a IConverter, but it, in turn, requires a validation step.
>> However, conversion runs before validation (ie. first I need to convert
>> string->int). So, I guess, I am unsure which of the above should be
>> wrapped
>> into a Converter and which into a Validator (trying to maintain some
>> separation of responsibilities). Should I create a converter that chains
>> String<>Int and Int<>Area conversions? Which would execute
>> AreaService.getArea(zipCode)?
>>
>> thanks
>> -nikita
>>
>
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Re: TextField w/ bean as model object?
there are two ways to do this
either you do everything in the converter
take the string and convert it into the area, if the zip is incorrect
throw a conversion exception
or you split the two
have a converter that converts the string into the area and a
validator that makes sure the area is valid
-igor
On Fri, Mar 12, 2010 at 10:03 AM, Nikita Tovstoles
wrote:
> I'd appreciate another pair of eyes on the following:
>
> I have a US ZIP Code input text field that I'd like to bind to an Area
> bean. The idea is that the component would prompt/display for a 5-digit zip
> code but getModelObject() would return an Area:
>
> class ZipInput extends RequiredTextField;
>
> where Area is:
>
> class Area{
> int zipcode;
> UsState state; //enum
> String city;
> }
>
> there is also a AreaService service:
>
> //returns true only if zipCode is a valid US zip code
> boolean isValidZipCode(int zipcode);
>
> //return Area bean for given zipCode; throws exception if 'zipCode' isn't a
> valid US Zip Code
> Area getArea(int zipCode);
>
>
> The component needs to:
>
> - validate that input is present (RequiredValidator?)
> - convert input from String integer
> - at some pt call AreaService.isValidZipCode (again, a validation task)
> - call AreaService.getArea (a conversion task)
>
>
> My main problem is that it seems like AreaService.getArea() should be
> wrapped into a IConverter, but it, in turn, requires a validation step.
> However, conversion runs before validation (ie. first I need to convert
> string->int). So, I guess, I am unsure which of the above should be wrapped
> into a Converter and which into a Validator (trying to maintain some
> separation of responsibilities). Should I create a converter that chains
> String<>Int and Int<>Area conversions? Which would execute
> AreaService.getArea(zipCode)?
>
> thanks
> -nikita
>
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TextField w/ bean as model object?
I'd appreciate another pair of eyes on the following:
I have a US ZIP Code input text field that I'd like to bind to an Area
bean. The idea is that the component would prompt/display for a 5-digit zip
code but getModelObject() would return an Area:
class ZipInput extends RequiredTextField;
where Area is:
class Area{
int zipcode;
UsState state; //enum
String city;
}
there is also a AreaService service:
//returns true only if zipCode is a valid US zip code
boolean isValidZipCode(int zipcode);
//return Area bean for given zipCode; throws exception if 'zipCode' isn't a
valid US Zip Code
Area getArea(int zipCode);
The component needs to:
- validate that input is present (RequiredValidator?)
- convert input from String integer
- at some pt call AreaService.isValidZipCode (again, a validation task)
- call AreaService.getArea (a conversion task)
My main problem is that it seems like AreaService.getArea() should be
wrapped into a IConverter, but it, in turn, requires a validation step.
However, conversion runs before validation (ie. first I need to convert
string->int). So, I guess, I am unsure which of the above should be wrapped
into a Converter and which into a Validator (trying to maintain some
separation of responsibilities). Should I create a converter that chains
String<>Int and Int<>Area conversions? Which would execute
AreaService.getArea(zipCode)?
thanks
-nikita
