Switch from Guava Optionals to Java 8 Optionals

This was a surprisingly involved change. Some of the difficulties included
java.util.Optional purposely not being Serializable (so I had to move a
few Optionals in mapreduce classes to @Nullable) and having to add the Truth
Java8 extension library for assertion support.

-------------
Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=171863777
This commit is contained in:
mcilwain 2017-10-11 13:09:26 -07:00 committed by jianglai
parent 184b2b56ac
commit c0f8da0c6e
581 changed files with 1325 additions and 932 deletions

View file

@ -22,7 +22,6 @@ import static google.registry.util.CollectionUtils.union;
import static google.registry.util.DomainNameUtils.ACE_PREFIX;
import com.google.common.base.Functions;
import com.google.common.base.Optional;
import com.google.common.base.Predicates;
import com.google.common.collect.FluentIterable;
import com.google.common.collect.ImmutableList;
@ -60,6 +59,7 @@ import java.net.URI;
import java.util.List;
import java.util.Locale;
import java.util.Map;
import java.util.Optional;
import javax.annotation.Nullable;
import javax.inject.Inject;
import javax.inject.Singleton;