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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
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/*
* Copyright 2015 The Netty Project
*
* The Netty Project licenses this file to you 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 io.netty.util.internal;
/**
* Provides methods for {@link DefaultPriorityQueue} to maintain internal state. These methods should generally not be
* used outside the scope of {@link DefaultPriorityQueue}.
*/
public interface PriorityQueueNode {
/**
* This should be used to initialize the storage returned by {@link #priorityQueueIndex(DefaultPriorityQueue)}.
*/
int INDEX_NOT_IN_QUEUE = -1;
/**
* Get the last value set by {@link #priorityQueueIndex(DefaultPriorityQueue, int)} for the value corresponding to
* {@code queue}.
*
* Throwing exceptions from this method will result in undefined behavior.
*/
int priorityQueueIndex(DefaultPriorityQueue> queue);
/**
* Used by {@link DefaultPriorityQueue} to maintain state for an element in the queue.
*
* Throwing exceptions from this method will result in undefined behavior.
* @param queue The queue for which the index is being set.
* @param i The index as used by {@link DefaultPriorityQueue}.
*/
void priorityQueueIndex(DefaultPriorityQueue> queue, int i);
}
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