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Easy Redis Java client and Real-Time Data Platform. Valkey compatible. Sync/Async/RxJava3/Reactive API. Client side caching. Over 50 Redis based Java objects and services: JCache API, Apache Tomcat, Hibernate, Spring, Set, Multimap, SortedSet, Map, List, Queue, Deque, Semaphore, Lock, AtomicLong, Map Reduce, Bloom filter, Scheduler, RPC
/*
* Copyright (c) 2016-2021 VMware Inc. or its affiliates, 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
*
* https://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 reactor.util.function;
import java.util.Objects;
import java.util.function.Function;
import reactor.util.annotation.NonNull;
import reactor.util.annotation.Nullable;
/**
* A tuple that holds four non-null values
*
* @param The type of the first non-null value held by this tuple
* @param The type of the second non-null value held by this tuple
* @param The type of the third non-null value held by this tuple
* @param The type of the fourth non-null value held by this tuple
* @author Jon Brisbin
* @author Stephane Maldini
*/
public class Tuple4 extends Tuple3 {
private static final long serialVersionUID = -4898704078143033129L;
@NonNull final T4 t4;
Tuple4(T1 t1, T2 t2, T3 t3, T4 t4) {
super( t1, t2, t3);
this.t4 = Objects.requireNonNull(t4, "t4");
}
/**
* Type-safe way to get the fourth object of this {@link Tuples}.
*
* @return The fourth object
*/
public T4 getT4() {
return t4;
}
/**
* Map the 1st part (T1) of this {@link Tuple4} into a different value and type,
* keeping the other parts.
*
* @param mapper the mapping {@link Function} for the T1 part
* @param the new type for the T1 part
* @return a new {@link Tuple4} with a different T1 value
*/
public Tuple4 mapT1(Function mapper) {
return new Tuple4<>(mapper.apply(t1), t2, t3, t4);
}
/**
* Map the 2nd part (T2) of this {@link Tuple4} into a different value and type,
* keeping the other parts.
*
* @param mapper the mapping {@link Function} for the T2 part
* @param the new type for the T2 part
* @return a new {@link Tuple4} with a different T2 value
*/
public Tuple4 mapT2(Function mapper) {
return new Tuple4<>(t1, mapper.apply(t2), t3, t4);
}
/**
* Map the 3rd part (T3) of this {@link Tuple4} into a different value and type,
* keeping the other parts.
*
* @param mapper the mapping {@link Function} for the T3 part
* @param the new type for the T3 part
* @return a new {@link Tuple4} with a different T3 value
*/
public Tuple4 mapT3(Function mapper) {
return new Tuple4<>(t1, t2, mapper.apply(t3), t4);
}
/**
* Map the 4th part (T4) of this {@link Tuple4} into a different value and type,
* keeping the other parts.
*
* @param mapper the mapping {@link Function} for the T4 part
* @param the new type for the T4 part
* @return a new {@link Tuple4} with a different T4 value
*/
public Tuple4 mapT4(Function mapper) {
return new Tuple4<>(t1, t2, t3, mapper.apply(t4));
}
@Nullable
@Override
public Object get(int index) {
switch (index) {
case 0:
return t1;
case 1:
return t2;
case 2:
return t3;
case 3:
return t4;
default:
return null;
}
}
@Override
public Object[] toArray() {
return new Object[]{t1, t2, t3, t4};
}
@Override
public boolean equals(@Nullable Object o) {
if (this == o) return true;
if (!(o instanceof Tuple4)) return false;
if (!super.equals(o)) return false;
@SuppressWarnings("rawtypes")
Tuple4 tuple4 = (Tuple4) o;
return t4.equals(tuple4.t4);
}
@Override
public int hashCode() {
int result = super.hashCode();
result = 31 * result + t4.hashCode();
return result;
}
@Override
public int size() {
return 4;
}
}
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