Validate year with current year using Lombok - spring-data-jpa

Question

In my application, I have a field name 'year' contains only year(2016, 2015 .....). But I have to validate this 'year' field, this field should contain current year.
I check all the Lombok validation annotations, but I did not find any annotation help to me. How can I achieve this?

Answer 1

I think there aren't lombok validation constraint annotations. If there are I didn't know.
I assume your field is a Integer. So, I suggest you next solutions:
Solution 1 - java bean validation constraint Annotations
You could add a method which start by 'is'like next and add java validation constraint #assertTrue
private int year;
#AssertTrue
public boolean isCurrentYear(){
return LocalDate.now().getYear() == year;
}
Solution 2 - Programmatically
Create a method to protect your constructor, setter or both checking if the year integer is the current year:
private int year;
//Constructor
public YourClass(int year){
checkCurrentYear(year);
this.year = year;
}
//Setter
public void setYear(int year){
checkCurrentYear(year);
this.year= year;
}
public void checkCurrentYear(int year){
if(!isCurrentYear()) // or (LocalDate.now().getYear() != year)
throw new IllegalArgumentException("Year must be the current");
}
Solution 3 - Implement your Spring Validator
Implement spring validator interface and use it when you want:
public class YourClass implements Validator {
public boolean supports(Class clazz) {
return YourClass.class.equals(clazz);
}
public void validate(Object obj, Errors e) {
YourClass p = (YourClass) obj;
if (LocalDate.now().getYear() != p.getYear()) {
e.rejectValue("year", "notcurrentyear");
}
}
}