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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.

-------------
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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8
java/google/registry/model/eppinput/EppInput.java
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@ -18,7 +18,6 @@ import static google.registry.util.CollectionUtils.nullSafeImmutableCopy;
import static google.registry.util.CollectionUtils.nullToEmptyImmutableCopy;
import com.google.common.base.Ascii;
import com.google.common.base.Optional;
import com.google.common.collect.ImmutableList;
import com.google.common.collect.ImmutableSet;
import google.registry.model.ImmutableObject;
@ -56,6 +55,7 @@ import google.registry.model.eppinput.ResourceCommand.ResourceCheck;
import google.registry.model.eppinput.ResourceCommand.SingleResourceCommand;
import google.registry.model.host.HostCommand;
import java.util.List;
import java.util.Optional;
import java.util.Set;
import javax.annotation.Nullable;
import javax.xml.bind.annotation.XmlAttribute;
@ -107,12 +107,12 @@ public class EppInput extends ImmutableObject {
return Optional.of(xmlSchemaAnnotation.xmlns()[0].prefix());
}
}
return Optional.absent();
return Optional.empty();
}
/** Returns whether this EppInput represents a command that operates on domain resources. */
public boolean isDomainResourceType() {
return getResourceType().or("").equals("domain");
return getResourceType().orElse("").equals("domain");
}
@Nullable
@ -131,7 +131,7 @@ public class EppInput extends ImmutableObject {
ResourceCommand resourceCommand = getResourceCommand();
return resourceCommand instanceof SingleResourceCommand
? Optional.of(((SingleResourceCommand) resourceCommand).getTargetId())
: Optional.<String>absent();
: Optional.<String>empty();
}
/**