T
- type of validatablepublic interface INullAcceptingValidator<T> extends IValidator<T>
null
value. Without implementing
this interface Wicket will never pass null
values to
IValidator.validate(IValidatable)
.
Keep in mind that the FormComponent
must have set the required property to
false
, otherwise Wicket will not permit the validator to process the
null
value.
IValidator
,
FormComponent.setRequired(boolean)
validate
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