Package org.coliper.ibean.extension

Interface Completable<T>

  • public interface Completable<T>
    Extension interface that allows runtime checking whether all fields of a bean have been initialized, that is, are not null.
    The generic type T should always be set to the bean type. The type is used in assertComplete() and is done to be able to put assertComplete() at the end of an initialization chain. See example below.

    If used together with a bean style with Optional support ( ClassicBeanStyleWithOptionalSupport and ModernBeanStyle) some bean fields can be set to not mandatory and will be left out of the not-null check.
    Here you find an example that also uses modern bean style (see ModernBeanStyle): public interface Person extends Completable<Person> { String firstName(); Person firstName(String s); String lastName(); Person lastName(String s); Optional<LocalDate> dateOfBirth(); Person dateOfBirth(LocalDate d); } assertComplete() should now always be called after the initialization of a Person bean is completed. dateOfBirth is set as optional so it will not be considered when checking for completeness: // will throw no exception as firstName and lastName are set Person person1 = IBean.of(Person.class).firstName("John").lastName("Doe").assertComplete(); // will throw exception as firstName was not set Person person2 = IBean.of(Person.class).lastName("Doe").assertComplete(); // will throw exception as lastName is null Person person3 = IBean.of(Person.class).firstName("John").lastName(null).assertComplete(); // will throw no exception; setting dateOfBirth here is optional Person person4 = IBean.of(Person.class) .firstName("John") .dateOfBirth(LocalDate.of(11, 11, 1977)) .lastName("Doe").assertComplete();

    Attention:Completable checks all (mandatory) fields from being not null. Contrary to ModificationAware it does not check if any setter was called. And for declaring a field as non-mandatory it is not enough to just return Optional from the getter, you also have to use a bean style with optional support like ClassicBeanStyleWithOptionalSupport and ModernBeanStyle.

    • Method Detail

      • isComplete

        boolean isComplete()
        Returns:
        true if all (non-optional) bean fields are not null
        See Also:
        Completable