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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) 2016-present, RxJava Contributors.
*
* 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 io.reactivex.rxjava3.internal.operators.observable;
import io.reactivex.rxjava3.annotations.Nullable;
import io.reactivex.rxjava3.core.*;
import io.reactivex.rxjava3.internal.observers.BasicIntQueueDisposable;
/**
* Emits a range of integer values from start to end.
*/
public final class ObservableRange extends Observable {
private final int start;
private final long end;
public ObservableRange(int start, int count) {
this.start = start;
this.end = (long)start + count;
}
@Override
protected void subscribeActual(Observer super Integer> o) {
RangeDisposable parent = new RangeDisposable(o, start, end);
o.onSubscribe(parent);
parent.run();
}
static final class RangeDisposable
extends BasicIntQueueDisposable {
private static final long serialVersionUID = 396518478098735504L;
final Observer super Integer> downstream;
final long end;
long index;
boolean fused;
RangeDisposable(Observer super Integer> actual, long start, long end) {
this.downstream = actual;
this.index = start;
this.end = end;
}
void run() {
if (fused) {
return;
}
Observer super Integer> actual = this.downstream;
long e = end;
for (long i = index; i != e && get() == 0; i++) {
actual.onNext((int)i);
}
if (get() == 0) {
lazySet(1);
actual.onComplete();
}
}
@Nullable
@Override
public Integer poll() {
long i = index;
if (i != end) {
index = i + 1;
return (int)i;
}
lazySet(1);
return null;
}
@Override
public boolean isEmpty() {
return index == end;
}
@Override
public void clear() {
index = end;
lazySet(1);
}
@Override
public void dispose() {
set(1);
}
@Override
public boolean isDisposed() {
return get() != 0;
}
@Override
public int requestFusion(int mode) {
if ((mode & SYNC) != 0) {
fused = true;
return SYNC;
}
return NONE;
}
}
}
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