Sorry for replying more than once, but I though of a much cleaner (and
Stripesier, in case that's a word) approach. It would be more work to
build, but when done right, it might even be a nice addition to the
framework itself. The idea is to write an interceptor that runs after
the binding and validation stage and removes any validation errors
that were added due to Validate-annotations, but should be ignored
because of a validation condition that doesn't apply. The validation
condition could be an annotation as well (and would be read/analysed
by the interceptor). I haven't really thought about what this
annotation would look like, but sticking to the expression language,
it could look something like
@Validate(required = true)
@ValidateIf("includeName") // I almost typed validateWhen :)
public String getName() {return name;}
public boolean isIncludeName() {return includeName;}
What do you (and others) think? It could deprecate the 'on' attribute
of @Validate ;)
On Wed, Jun 11, 2008 at 10:54 PM, Levi Hoogenberg
<[EMAIL PROTECTED]> wrote:
> Something else that might work for you is using validation expressions:
>
> @Validate(expression = "(not includeName) or (includeName ne null)")
> public String getName() {return name;}
>
> (See http://mc4j.org/confluence/display/stripes/Validation+Reference)
>
> The disadvantage, however, is that you have to express all of your
> validations in expressions, which could lead to rather complex
> expressions (and pretty generic error messages).
>
> On your other point, I don't think omitting property accessors is
> something Stripes supports. It would be nice if Stripes could bind
> public/protected fields, though.
>
> Regards,
> Levi
>
> On Wed, Jun 11, 2008 at 10:18 PM, Ross Sargant <[EMAIL PROTECTED]> wrote:
>> Hi Dave,
>> Thanks for the snippet, it is helpful assuming the only option I have is
>> to write code myself to handle this. I was curious if it was possible to set
>> up dependencies on validation rules between fields solely using annotations
>> and have stripes handle everything. I remember playing around wtih the
>> Struts validator back in the day and it had something along those lines.
>>
>> Thinking out loud here but something along lines of
>>
>> @Validate(on="search",when="useRoom=true")
>> private String roomCriteria_;
>>
>> Of course, it is a big can of worms to say how much flexibility "when" could
>> have and how this works if "when" fields also need validation, but simply
>> checking that one (or possibly more) other parameter have a certain value
>> would handle my scenario.
>>
>> On a side note, is there anything special I need to do to have validation
>> work directly with fields?
>> I'm using 1.5.0 RC1 and binding doesn't work at all if the fields are
>> private, if the fields are public binding works but not validation. If I use
>> traditional get/set pairs..everything works fine.
>>
>> Using Jetty as my web-container..
>>
>>
>>
>> On Wed, Jun 11, 2008 at 11:56 AM, DaveMark <[EMAIL PROTECTED]> wrote:
>>>
>>> Hi Ross,
>>>
>>> Would this be of use to you?
>>>
>>>
>>> @ValidationMethod(on="division")
>>> public void avoidDivideByZero(ValidationErrors errors) {
>>> String skip = getContext().getRequest().getParameter("skip");
>>> if( skip != null && !"".equals(skip) )
>>> {
>>> return; //do not validate
>>> }
>>>
>>> if (this.numberTwo == 0) {
>>> errors.add("numberTwo",
>>> new SimpleError("/ by zero not allowed.")
>>> );
>>> }
>>> }
>>>
>>> Cheers,
>>>
>>> DJDaveMark
>>>
>>>
>>>
>>>
>>> > ----------------------------------------------------------------------
>>> > Date: Tue, 10 Jun 2008 13:49:48 -0400
>>> > From: "Ross Sargant" <[EMAIL PROTECTED]>
>>> > Subject: Conditional Validation
>>> > To: Stripes-users@lists.sourceforge.net
>>> >
>>> > Hi,
>>> > Is it possible to have validation in stripes run conditionally based
>>> > on
>>> > other request parameters?
>>> >
>>> > My scenario is that I have a search form with several different search
>>> > options.
>>> > Each search option has a checkbox which activates that criteria for the
>>> > search and a corresponding input control (either a text-box or
>>> > drop-down)
>>> > for the criteria value.
>>> >
>>> > Is there a way, without writing much code myself ,to have stripes handle
>>> > the
>>> > validation of the free-form text entry ONLY when the corresponding
>>> > check-box
>>> > is selected?
>>> > I looked at DontValidate and the "on" annotation but neither seems like
>>> > it
>>> > would fit the bill here. I know I can write my own code to run stripes
>>> > validators based on the checkbox state but obviously I'd like to avoid
>>> > that.
>>> >
>>> > This seems like a pretty common way of building a search form with
>>> > different
>>> > options so I'm suprised I'm having difficulty with it.
>>> >
>>> > Is there something I've missed here that would make this easier? Another
>>> > way
>>> > of setting up the page controls perhaps?
>>> >
>>> > Thanks,
>>> >
>>> > --
>>> > Ross Sargant
>>> >
>>> > TVR Communications LLC
>>> > Software Engineer
>>> > 3275 W Hillsboro Blvd,Suite 300,Deerfield Beach, Florida,33442
>>> >
>>> > http://www.tvrc.com
>>> _
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>> _
>>>
>>>
>>> __________________________________________________________
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>>
>>
>>
>> --
>> Ross Sargant
>>
>> TVR Communications LLC
>> Software Engineer
>> 3275 W Hillsboro Blvd,Suite 300,Deerfield Beach, Florida,33442
>>
>> http://www.tvrc.com
>>
>> p: 954-571-2017 x2108
>>
>> email: [EMAIL PROTECTED]
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