private static Either<String, RegistrationsUpdate> registrationsUpdate(JsonNode jsonNode) {
Either<String, BillingCompany> billingCompany =
ArgoUtils.stringValue(jsonNode, "billingCompany").right().map(BillingCompany::new);
Either<String, Badge> badge = ArgoUtils.stringValue(jsonNode, "badge").right().map(Badge::new);
Either<String, String> dietaryRequirements =
ArgoUtils.stringValue(jsonNode, "dietaryRequirements");
Either<String, Option<String>> bundle =
ArgoUtils.stringValue(jsonNode, "bundle")
.right()
.map(Option::fromNull)
.right()
.map(r -> r.filter(Strings.isNotNullOrEmpty));
return bundle
.right()
.apply(
dietaryRequirements
.right()
.apply(
badge
.right()
.apply(
billingCompany
.right()
.apply(Either.right(Function.curry(RegistrationsUpdate::new))))));
}
@POST
@Path("/{registrationId}")
@Consumes(MediaType.APPLICATION_JSON)
@Produces(MediaType.APPLICATION_JSON)
public Response postUpdate(
@Context HttpServletRequest request, @PathParam("registrationId") UUID id, String body)
throws Exception {
authService.guardAuthenticatedUser(request);
Either<String, RegistrationsUpdate> map =
ArgoUtils.parseEither(body)
.right()
.map(x -> x.getNode("tuple"))
.right()
.bind(RegistrationsRestService::registrationsUpdate);
if (map.isLeft()) return Response.serverError().build();
RegistrationsUpdate ru = map.right().value();
try (Connection c = dataSource.getConnection()) {
c.setAutoCommit(false);
if (!registrationsSqlMapper.one(c, id).isSome())
return Response.status(Status.NOT_FOUND).build();
registrationsSqlMapper.update(
c, id, ru.billingCompany, ru.badge, ru.dietaryRequirements, ru.bundle);
c.commit();
}
return Response.ok().build();
}
private static <S, T> F<S, Either<S, T>> eitherK(final F<S, T> func) {
return s -> {
try {
T res = func.f(s);
return (res == null) ? Either.left(s) : Either.right(res);
} catch (Exception ex) {
System.out.println("* " + ex.getMessage());
return Either.left(s);
}
};
}
/**
* Sequences through the right side of the either monad with a list of values.
*
* @param a The list of values to sequence with the either monad.
* @return A sequenced value.
*/
public static <B, X> Either<X, List<B>> sequenceRight(final List<Either<X, B>> a) {
return a.isEmpty()
? Either.<X, List<B>>right(List.<B>nil())
: a.head()
.right()
.bind(
new Func<B, Either<X, List<B>>>() {
public Either<X, List<B>> f(final B bb) {
return sequenceRight(a.tail()).right().map(cons_(bb));
}
});
}
/**
* Takes an <code>Either</code> to its contained value within left or right.
*
* @param e The either to reduce.
* @return An <code>Either</code> to its contained value within left or right.
*/
public static <A> A reduce(final Either<A, A> e) {
return e.isLeft() ? e.left().value() : e.right().value();
}
/**
* Binds the given function across this projection's value if it has one.
*
* @param f The function to bind across this projection.
* @return A new either value after binding.
*/
public <X> Either<X, B> bind(final Func<A, Either<X, B>> f) {
return isLeft() ? f.f(value()) : new Right<X, B>(e.right().value());
}
/**
* Map the given function across this projection's value if it has one.
*
* @param f The function to map across this projection.
* @return A new either value after mapping.
*/
public <X> Either<X, B> map(final Func<A, X> f) {
return isLeft() ? new Left<X, B>(f.f(value())) : new Right<X, B>(e.right().value());
}
/**
* The value of this projection or the result of the given function on the opposing projection's
* value.
*
* @param f The function to execute if this projection has no value.
* @return The value of this projection or the result of the given function on the opposing
* projection's value.
*/
public A on(final Func<B, A> f) {
return isLeft() ? value() : f.f(e.right().value());
}
/**
* Returns an either projection of this optional value; the given argument in <code>Left</code> if
* no value, or the value in <code>Right</code>.
*
* @param x The value to return in left if this optional value has no value.
* @return An either projection of this optional value.
*/
public <X> Either<X, A> toEither(final X x) {
return isSome() ? Either.<X, A>right(some()) : Either.<X, A>left(x);
}
/**
* Returns an either projection of this array; the given argument in <code>Left</code> if empty,
* or the first element in <code>Right</code>.
*
* @param x The value to return in left if this array is empty.
* @return An either projection of this array.
*/
@SuppressWarnings("unchecked")
public <X> Either<X, A> toEither(final P1<X> x) {
return a.length == 0 ? Either.<X, A>left(x._1()) : Either.<X, A>right((A) a[0]);
}