This builder is null safe to access sequence of accessors. If any result is null the result is propagated at to the end of accessor.
of(final Function<I, O> function)Example:
public class ComplexObject {
private City city;
public City getCity() {
return this.city;
}
}
public class City {
private String name;
private State state;
public String getName() {
return this.name;
}
public State getState() {
return this.state;
}
}
public class State {
public String name;
public String getName() {
return this.name;
}
}import static br.com.fluentvalidator.function.FunctionBuilder.of;
private static Predicate<ComplexObject> hasStateName() {
return PredicateBuilder.from(not(nullValue()))
.and(not(nullValue(of(ComplexObject::getCity).andThen(City::getState).andThen(State:getName))));
}