How to create a custom annotated validation that has a param in spring boot?

Question

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;

Answer 1

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;