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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 (c) 2013-2024 Nikita Koksharov
 *
 * 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 org.redisson.api;

import org.redisson.api.mapreduce.RCollectionMapReduce;

import java.util.Iterator;
import java.util.List;
import java.util.RandomAccess;

/**
 * Distributed and concurrent implementation of {@link java.util.List}
 *
 * @author Nikita Koksharov
 *
 * @param  the type of elements held in this collection
 */
public interface RList extends List, RExpirable, RListAsync, RSortable>, RandomAccess {

    /**
     * Loads elements by specified indexes
     * 
     * @param indexes of elements
     * @return list of elements
     */
    List get(int... indexes);

    /**
     * Returns element iterator that can be shared across multiple applications.
     * Creating multiple iterators on the same object with this method will result in a single shared iterator.
     * See {@linkplain RList#distributedIterator(String, int)} for creating different iterators.
     * @param count batch size
     * @return shared elements iterator
     */
    Iterator distributedIterator(int count);

    /**
     * Returns iterator over elements that match specified pattern. Iterator can be shared across multiple applications.
     * Creating multiple iterators on the same object with this method will result in a single shared iterator.
     * Iterator name must be resolved to the same hash slot as list name.
     * @param count batch size
     * @param iteratorName redis object name to which cursor will be saved
     * @return shared elements iterator
     */
    Iterator distributedIterator(String iteratorName, int count);

    /**
     * Returns RMapReduce object associated with this map
     * 
     * @param  output key
     * @param  output value
     * @return MapReduce instance
     */
     RCollectionMapReduce mapReduce();
    
    /**
     * Add element after elementToFind
     * 
     * @param elementToFind - object to find
     * @param element - object to add
     * @return new list size
     */
    int addAfter(V elementToFind, V element);
    
    /**
     * Add element before elementToFind
     * 
     * @param elementToFind - object to find
     * @param element - object to add
     * @return new list size
     */
    int addBefore(V elementToFind, V element);
    
    /**
     * Set element at index.
     * Works faster than {@link #set(int, Object)} but 
     * doesn't return previous element.
     * 
     * @param index - index of object
     * @param element - object to set
     */
    void fastSet(int index, V element);

    RList subList(int fromIndex, int toIndex);

    /**
     * Read all elements at once
     *
     * @return list of values
     */
    List readAll();

    /**
     * Trim list and remains elements only in specified range
     * fromIndex, inclusive, and toIndex, inclusive.
     *
     * @param fromIndex - from index
     * @param toIndex - to index
     */
    void trim(int fromIndex, int toIndex);

    /**
     * Returns range of values from 0 index to toIndex. Indexes are zero based. 
     * -1 means the last element, -2 means penultimate and so on.
     * 
     * @param toIndex - end index
     * @return elements
     */
    List range(int toIndex);
    
    /**
     * Returns range of values from fromIndex to toIndex index including.
     * Indexes are zero based. -1 means the last element, -2 means penultimate and so on.
     * 
     * @param fromIndex - start index
     * @param toIndex - end index
     * @return elements
     */
    List range(int fromIndex, int toIndex);
    
    /**
     * Remove object by specified index
     * 
     * @param index - index of object
     */
    void fastRemove(int index);
    
    /**
     * Removes up to count occurrences of element 
     * 
     * @param element - element to find
     * @param count - amount occurrences
     * @return {@code true} if at least one element removed; 
     *      or {@code false} if element isn't found
     */
    boolean remove(Object element, int count);

    /**
     * Adds object event listener
     *
     * @see org.redisson.api.listener.TrackingListener
     * @see org.redisson.api.ExpiredObjectListener
     * @see org.redisson.api.DeletedObjectListener
     * @see org.redisson.api.listener.ListAddListener
     * @see org.redisson.api.listener.ListInsertListener
     * @see org.redisson.api.listener.ListSetListener
     * @see org.redisson.api.listener.ListRemoveListener
     * @see org.redisson.api.listener.ListTrimListener
     *
     * @param listener - object event listener
     * @return listener id
     */
    int addListener(ObjectListener listener);
}