src/main/java/net/pterodactylus/sone/utils/Optionals.java

   1 package net.pterodactylus.sone.utils;
   2
   3 import com.google.common.base.Function;
   4 import com.google.common.base.Optional;
   5 import com.google.common.base.Predicate;
   6
   7 /**
   8  * Helper methods for dealing with {@link Optional}s.
   9  *
  10  * @author <a href="mailto:bombe@pterodactylus.net">David ‘Bombe’ Roden</a>
  11  */
  12 public class Optionals {
  13
  14         public static Predicate<Optional<?>> isPresent() {
  15                 return new Predicate<Optional<?>>() {
  16                         @Override
  17                         public boolean apply(Optional<?> input) {
  18                                 return input.isPresent();
  19                         }
  20                 };
  21         }
  22
  23         public static <T> Function<Optional<T>, T> get() {
  24                 return new Function<Optional<T>, T>() {
  25                         @Override
  26                         public T apply(Optional<T> input) {
  27                                 return input.get();
  28                         }
  29                 };
  30         }
  31
  32 }