io.trino.plugin.tpch.util.Optionals Maven / Gradle / Ivy
/*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package io.trino.plugin.tpch.util;
import java.util.Optional;
import java.util.function.BiFunction;
import java.util.function.BinaryOperator;
public final class Optionals
{
private Optionals() {}
public static Optional withBoth(Optional left, Optional right, BiFunction binaryFunction)
{
return left.flatMap(l -> right.map(r -> binaryFunction.apply(l, r)));
}
public static Optional combine(Optional left, Optional right, BinaryOperator combiner)
{
if (left.isPresent() && right.isPresent()) {
return Optional.of(combiner.apply(left.get(), right.get()));
}
if (left.isPresent()) {
return left;
}
return right;
}
}