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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) 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.rx;
import io.reactivex.rxjava3.core.Single;
import io.reactivex.rxjava3.functions.LongConsumer;
import io.reactivex.rxjava3.processors.ReplayProcessor;
import org.reactivestreams.Publisher;
import org.redisson.BaseRedissonList;
import org.redisson.api.RFuture;
/**
* Distributed and concurrent implementation of {@link java.util.List}
*
* @author Nikita Koksharov
*
* @param the type of elements held in this collection
*/
public class RedissonListRx {
private final BaseRedissonList instance;
public RedissonListRx(BaseRedissonList instance) {
this.instance = instance;
}
public Publisher descendingIterator() {
return iterator(-1, false);
}
public Publisher iterator() {
return iterator(0, true);
}
public Publisher descendingIterator(int startIndex) {
return iterator(startIndex, false);
}
public Publisher iterator(int startIndex) {
return iterator(startIndex, true);
}
private Publisher iterator(int startIndex, boolean forward) {
ReplayProcessor p = ReplayProcessor.create();
return p.doOnRequest(new LongConsumer() {
private int currentIndex = startIndex;
@Override
public void accept(long n) throws Exception {
instance.getAsync(currentIndex).whenComplete((value, e) -> {
if (e != null) {
p.onError(e);
return;
}
if (value != null) {
p.onNext(value);
if (forward) {
currentIndex++;
} else {
currentIndex--;
}
}
if (value == null) {
p.onComplete();
return;
}
if (n-1 == 0) {
return;
}
try {
accept(n-1);
} catch (Exception e1) {
e1.printStackTrace();
}
});
}
});
}
public Single addAll(Publisher extends V> c) {
return new PublisherAdder() {
@Override
public RFuture add(Object o) {
return instance.addAsync((V) o);
}
}.addAll(c);
}
}
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