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

@ -18,7 +18,6 @@ import static com.google.common.base.Preconditions.checkArgument;
import static com.google.common.collect.ImmutableList.toImmutableList;
import static google.registry.model.EppResourceUtils.projectResourceOntoBuilderAtTime;
import com.google.common.base.Optional;
import com.google.common.base.Predicates;
import com.google.common.collect.ImmutableList;
import com.googlecode.objectify.annotation.Entity;
@ -32,6 +31,7 @@ import google.registry.model.annotations.ExternalMessagingName;
import google.registry.model.annotations.ReportedOn;
import google.registry.model.contact.PostalInfo.Type;
import google.registry.model.transfer.TransferData;
import java.util.Optional;
import java.util.stream.Stream;
import javax.xml.bind.annotation.XmlElement;
import org.joda.time.DateTime;
@ -147,7 +147,7 @@ public class ContactResource extends EppResource implements
@Override
public final TransferData getTransferData() {
return Optional.fromNullable(transferData).or(TransferData.EMPTY);
return Optional.ofNullable(transferData).orElse(TransferData.EMPTY);
}
@Override