Finally I followed your advice and use Java-based validation now. I did not
get it work with the expression validator via annotations. If somebody knows
how to do the following Java-based validation with annotations just let me
know:
public void validate()
{
if (privatePerson)
{
if (GenericValidator.isBlankOrNull(name))
addFieldError("name", "name required");
if (GenericValidator.isBlankOrNull(number1))
addFieldError("number1", "number1 required");
else if (!(GenericValidator.isInt(number1) ||
GenericValidator.isInt(number2)))
addFieldError("number1", "The number can contain only digits.");
else if (!(GenericValidator.minLength(number1, 6) &&
GenericValidator.maxLength(number1, 6)))
addFieldError("number1", "The first part of the number must be 6
digits long.");
else if (!(GenericValidator.minLength(number2, 4) &&
GenericValidator.maxLength(number2, 4)))
addFieldError("number2", "The second part of the number must be 4
digits long.");
}
else
{
if (GenericValidator.isBlankOrNull(number1))
addFieldError("number1", "number required");
else if (!GenericValidator.isInt(number1))
addFieldError("number1", "The number can contain only digits.");
else if (!(GenericValidator.minLength(number1, 8) &&
GenericValidator.maxLength(number1, 8)))
addFieldError("number1", "The number must be 8 digits long.");
}
}
newton.dave wrote:
>
> AFAIK the expression validator is available via annotations. You can
> also use a custom validator but I find it a little clumsy with
> annotations.
>
> Personally, as soon as validation gets even remotely complicated I fall
> back to using Java-based validation--I just think it's easier to
> maintain and much more clear.
>
> I'll sometimes use a combination of both Java-based and either XML or
> annotations if it makes sense to.
>
> On a side note, IIRC the "trim" attribute/parameter only applies the
> trim during validation--not on the value set on the action property.
>
> Dave
>
> Dirk Forchel wrote:
>> I have two radio buttons for a form property named "privatePerson" with
>> two
>> possible values ('true' and 'false') which toogles the view of my input
>> form
>> with three different input fields (number1, number2, name).
>> If the user choose "private" the number1, number2 and name input fields
>> are
>> shown, if the user choose "non-private" only the number1 input field is
>> shown.
>> For the first choise I would use annotation based validation like
>>
>> @Validations(
>> requiredStrings = {...@requiredstringvalidator(type =
>> ValidatorType.SIMPLE,
>> fieldName = "name", message = "You must enter a name.")},
>> stringLengthFields = {...@stringlengthfieldvalidator(type =
>> ValidatorType.SIMPLE, trim = true, minLength="6", maxLength = "6",
>> fieldName
>> = "number1", message = "The first part of the number must be 6 digits
>> long."), @StringLengthFieldValidator(type = ValidatorType.SIMPLE, trim =
>> true, minLength="4", maxLength = "4", fieldName = "number2", message =
>> "The
>> second part of the number must be 4 digits long."),
>> }
>> )
>> public String execute() throws Exception {
>> ...
>> }
>>
>> If the user selects "non-private" only the following validator should be
>> used.
>>
>> @Validations(
>> stringLengthFields = {...@stringlengthfieldvalidator(type =
>> ValidatorType.SIMPLE, trim = true, minLength="8", maxLength = "8",
>> fieldName
>> = "number1", message = "The first part of the number must be 8 digits
>> long."),
>> }
>> )
>> public String execute() throws Exception {
>> ...
>> }
>>
>>
>> How can I accomplish this conditional annotation based validation?
>
>
>
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