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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-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.flowable;
import org.reactivestreams.Subscriber;
import io.reactivex.rxjava3.annotations.Nullable;
import io.reactivex.rxjava3.core.Flowable;
import io.reactivex.rxjava3.functions.Function;
import io.reactivex.rxjava3.internal.subscribers.*;
import io.reactivex.rxjava3.operators.ConditionalSubscriber;
import java.util.Objects;
public final class FlowableMap extends AbstractFlowableWithUpstream {
final Function super T, ? extends U> mapper;
public FlowableMap(Flowable source, Function super T, ? extends U> mapper) {
super(source);
this.mapper = mapper;
}
@Override
protected void subscribeActual(Subscriber super U> s) {
if (s instanceof ConditionalSubscriber) {
source.subscribe(new MapConditionalSubscriber((ConditionalSubscriber super U>)s, mapper));
} else {
source.subscribe(new MapSubscriber(s, mapper));
}
}
static final class MapSubscriber extends BasicFuseableSubscriber {
final Function super T, ? extends U> mapper;
MapSubscriber(Subscriber super U> actual, Function super T, ? extends U> mapper) {
super(actual);
this.mapper = mapper;
}
@Override
public void onNext(T t) {
if (done) {
return;
}
if (sourceMode != NONE) {
downstream.onNext(null);
return;
}
U v;
try {
v = Objects.requireNonNull(mapper.apply(t), "The mapper function returned a null value.");
} catch (Throwable ex) {
fail(ex);
return;
}
downstream.onNext(v);
}
@Override
public int requestFusion(int mode) {
return transitiveBoundaryFusion(mode);
}
@Nullable
@Override
public U poll() throws Throwable {
T t = qs.poll();
return t != null ? Objects.requireNonNull(mapper.apply(t), "The mapper function returned a null value.") : null;
}
}
static final class MapConditionalSubscriber extends BasicFuseableConditionalSubscriber {
final Function super T, ? extends U> mapper;
MapConditionalSubscriber(ConditionalSubscriber super U> actual, Function super T, ? extends U> function) {
super(actual);
this.mapper = function;
}
@Override
public void onNext(T t) {
if (done) {
return;
}
if (sourceMode != NONE) {
downstream.onNext(null);
return;
}
U v;
try {
v = Objects.requireNonNull(mapper.apply(t), "The mapper function returned a null value.");
} catch (Throwable ex) {
fail(ex);
return;
}
downstream.onNext(v);
}
@Override
public boolean tryOnNext(T t) {
if (done) {
return true;
}
if (sourceMode != NONE) {
downstream.tryOnNext(null);
return true;
}
U v;
try {
v = Objects.requireNonNull(mapper.apply(t), "The mapper function returned a null value.");
} catch (Throwable ex) {
fail(ex);
return true;
}
return downstream.tryOnNext(v);
}
@Override
public int requestFusion(int mode) {
return transitiveBoundaryFusion(mode);
}
@Nullable
@Override
public U poll() throws Throwable {
T t = qs.poll();
return t != null ? Objects.requireNonNull(mapper.apply(t), "The mapper function returned a null value.") : null;
}
}
}
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