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Switch from Guava Optionals to Java 8 Optionals

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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.

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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
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5
java/google/registry/model/eppoutput/EppResponse.java
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@@ -17,7 +17,6 @@ package google.registry.model.eppoutput;
import static google.registry.util.CollectionUtils.forceEmptyToNull;
import static google.registry.util.CollectionUtils.nullToEmptyImmutableCopy;
import com.google.common.base.Optional;
import com.google.common.collect.ImmutableList;
import google.registry.model.Buildable;
import google.registry.model.ImmutableObject;
@@ -157,9 +156,7 @@ public class EppResponse extends ImmutableObject implements ResponseOrGreeting {
@Nullable
public ResponseExtension getFirstExtensionOfType(Class<? extends ResponseExtension> clazz) {
return Optional.fromJavaUtil(
extensions.stream().filter(clazz::isInstance).map(clazz::cast).findFirst())
.orNull();
return extensions.stream().filter(clazz::isInstance).map(clazz::cast).findFirst().orElse(null);
}
@Nullable