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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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4
java/google/registry/tools/params/OptionalParameterConverterValidator.java
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@ -14,8 +14,8 @@
package google.registry.tools.params;
import com.google.common.base.Optional;
import google.registry.util.TypeUtils.TypeInstantiator;
import java.util.Optional;
/**
* Class for parameters that can handle special string "null" or empty values to
@ -39,7 +39,7 @@ public class OptionalParameterConverterValidator<T, C extends ParameterConverter
@Override
public final Optional<T> convert(String value) {
if (value.equals(NULL_STRING) || value.isEmpty()) {
return Optional.absent();
return Optional.empty();
} else {
return Optional.of(validator.convert(value));
}