Is it possible to pass a value when using a custom annotated validation? The logic is different depending on the param value. In the example below, the chill room may require the key-value pairs to include "snack" : "" with max length 10, min length 1 similar to the @Size(min = 1, max = 10). I'm implementing the ConstraintValidator and set up the interface.
i.e.
@ConcertValidation(dressingRoom = "chill")
private List<Map<String, String>> json;
Inside the initialize method of the ConstraintValidator implementation, you can capture the value from annotation. For example:
class ConcertValidator implements ConstraintValidator<ConcertValidation, List<Map<String, String>>> {
String dressingRoom;
@Override
public void initialize(ConcertValidation constraintAnnotation) {
dressingRoom = constraintAnnotation.dressingRoom();
}
@Override
public boolean isValid(List<Map<String, String>> value, ConstraintValidatorContext context) {
boolean isValid = false;
//TODO implement your logic depending on dressingRoom value
return isValid;
}
}
In the interface for the validator, include:
//default code
pubilc @interface ConcertValidation{
// default code
String dressingRoom() default "";
}
In the validator class, you must initialize the params you want to pass to use them in your logic for the isValid() method;
// global variables
private String dressingRoom;
@Override
public void initialize(ConcertValidation concertValidationConstraint){
this.dressingRoom = concertValidationConstraint.dressingRoom();
}
Whenever you use the custom annotation validation, just pass the params.
@ConcertValidation(dressingRoom = "chill")
private List<Map<String, String>> json;