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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.single;
import java.util.*;
import org.reactivestreams.Publisher;
import io.reactivex.rxjava3.core.*;
import io.reactivex.rxjava3.functions.*;
/**
* Helper utility class to support Single with inner classes.
*/
public final class SingleInternalHelper {
/** Utility class. */
private SingleInternalHelper() {
throw new IllegalStateException("No instances!");
}
enum NoSuchElementSupplier implements Supplier {
INSTANCE;
@Override
public NoSuchElementException get() {
return new NoSuchElementException();
}
}
public static Supplier emptyThrower() {
return NoSuchElementSupplier.INSTANCE;
}
@SuppressWarnings("rawtypes")
enum ToFlowable implements Function {
INSTANCE;
@SuppressWarnings("unchecked")
@Override
public Publisher apply(SingleSource v) {
return new SingleToFlowable(v);
}
}
@SuppressWarnings({ "rawtypes", "unchecked" })
public static Function, Publisher extends T>> toFlowable() {
return (Function)ToFlowable.INSTANCE;
}
static final class ToFlowableIterator implements Iterator> {
private final Iterator extends SingleSource extends T>> sit;
ToFlowableIterator(Iterator extends SingleSource extends T>> sit) {
this.sit = sit;
}
@Override
public boolean hasNext() {
return sit.hasNext();
}
@Override
public Flowable next() {
return new SingleToFlowable<>(sit.next());
}
@Override
public void remove() {
throw new UnsupportedOperationException();
}
}
static final class ToFlowableIterable implements Iterable> {
private final Iterable extends SingleSource extends T>> sources;
ToFlowableIterable(Iterable extends SingleSource extends T>> sources) {
this.sources = sources;
}
@Override
public Iterator> iterator() {
return new ToFlowableIterator<>(sources.iterator());
}
}
public static Iterable extends Flowable> iterableToFlowable(final Iterable extends SingleSource extends T>> sources) {
return new ToFlowableIterable<>(sources);
}
}
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