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A Speedment bundle that shades all dependencies into one jar. This is
useful when deploying an application on a server.
The newest version!
/*
*
* Copyright (c) 2006-2019, Speedment, Inc. All Rights Reserved.
*
* 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 com.speedment.runtime.compute.internal;
import com.speedment.runtime.compute.ToDouble;
import com.speedment.runtime.compute.ToDoubleNullable;
import com.speedment.runtime.compute.expression.NullableExpression;
import java.util.Objects;
import java.util.function.DoubleUnaryOperator;
import java.util.function.Predicate;
import static java.util.Objects.requireNonNull;
/**
* @author Emil Forslund
* @since 3.1.0
*/
public final class ToDoubleNullableImpl
implements NullableExpression>, ToDoubleNullable {
private final ToDouble original;
private final Predicate isNull;
public ToDoubleNullableImpl(ToDouble original, Predicate isNull) {
this.original = requireNonNull(original);
this.isNull = requireNonNull(isNull);
}
@Override
public ToDouble inner() {
return original;
}
@Override
public Predicate isNullPredicate() {
return isNull;
}
@Override
public Double apply(T t) {
return isNull.test(t) ? null : original.applyAsDouble(t);
}
@Override
public double applyAsDouble(T t) throws NullPointerException {
return original.applyAsDouble(t);
}
@Override
public ToDouble orThrow() throws NullPointerException {
return original;
}
@Override
public ToDouble orElseGet(ToDouble getter) {
return t -> isNull.test(t)
? getter.applyAsDouble(t)
: original.applyAsDouble(t);
}
@Override
public ToDouble orElse(Double value) {
return t -> isNull.test(t) ? value : original.applyAsDouble(t);
}
@Override
public ToDoubleNullable mapIfPresent(DoubleUnaryOperator mapper) {
return t -> isNull.test(t) ? null
: mapper.applyAsDouble(original.applyAsDouble(t));
}
@Override
public long hash(T object) {
return Double.doubleToLongBits(
isNull.test(object)
? Double.NEGATIVE_INFINITY // Unlikely value
: Double.doubleToLongBits(original.applyAsDouble(object))
);
}
@Override
public int compare(T first, T second) {
final boolean f = isNull(first);
final boolean s = isNull(second);
if (f && s) return 0;
else if (f) return 1;
else if (s) return -1;
else return Double.compare(
original.applyAsDouble(first),
original.applyAsDouble(second)
);
}
@Override
public boolean isNull(T object) {
return isNull.test(object);
}
@Override
public boolean isNotNull(T object) {
return !isNull.test(object);
}
@Override
public boolean equals(Object o) {
if (this == o) return true;
else if (!(o instanceof NullableExpression)) return false;
final NullableExpression that = (NullableExpression) o;
return Objects.equals(original, that.inner()) &&
Objects.equals(isNull, that.isNullPredicate());
}
@Override
public int hashCode() {
return Objects.hash(original, isNull);
}
}