Mapstruct default value for LocalDate

Question

How to use defaultValue for LocalDate using Mapstruct? I was trying everything and nothing works. My failed attempts below:

@Mapping(target = "bornDate", defaultValue = "2019-10-11", dateFormat = "yyyy-MM-dd")
Person kidToPerson(Kid kid);

@Mapping(target = "bornDate", defaultExpression = "java(LocalDate.MIN)", dateFormat = "yyyy-MM-dd")
Person kidToPerson(Kid kid);

@Mapping(target = "bornDate", defaultExpression = "java(LocalDate.parse(2019-01-01))", dateFormat = "yyyy-MM-dd")
Person kidToPerson(Kid kid);

I just want to have some default value after mapping in my property LocalDate bornDate from Person.

Chunky

could you post the source and target as well. – Kailakaile

Why are those attempts failed? What kind of errors did you have? – Dessertspoon

Answer 1

Try this

@Mapper(imports = {LocalDate.class})
public interface MyMapper {
    @Mapping(target = "bornDate", defaultExpression ="java(LocalDate.of(2019,12,31))")
    Person kidToPerson(Kid kid);
}

Sideburns