/*
 * Copyright (c) 2011-2017 Pivotal Software Inc, All Rights Reserved.
 *
 * 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
 *
 *       https://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 reactor.core.publisher;

import java.util.Objects;
import java.util.function.Function;

import reactor.core.CoreSubscriber;
import reactor.core.Fuseable;

Maps the values of the source publisher one-on-one via a mapper function.
Type parameters:
  • <T> – the source value type
  • <R> – the result value type
See Also:
/** * Maps the values of the source publisher one-on-one via a mapper function. * * @param <T> the source value type * @param <R> the result value type * @see <a href="https://github.com/reactor/reactive-streams-commons">Reactive-Streams-Commons</a> */
final class MonoMap<T, R> extends InternalMonoOperator<T, R> { final Function<? super T, ? extends R> mapper;
Constructs a StreamMap instance with the given source and mapper.
Params:
  • source – the source Publisher instance
  • mapper – the mapper function
Throws:
/** * Constructs a StreamMap instance with the given source and mapper. * * @param source the source Publisher instance * @param mapper the mapper function * @throws NullPointerException if either {@code source} or {@code mapper} is null. */
MonoMap(Mono<? extends T> source, Function<? super T, ? extends R> mapper) { super(source); this.mapper = Objects.requireNonNull(mapper, "mapper"); } @Override @SuppressWarnings("unchecked") public CoreSubscriber<? super T> subscribeOrReturn(CoreSubscriber<? super R> actual) { if (actual instanceof Fuseable.ConditionalSubscriber) { Fuseable.ConditionalSubscriber<? super R> cs = (Fuseable.ConditionalSubscriber<? super R>) actual; return new FluxMap.MapConditionalSubscriber<>(cs, mapper); } return new FluxMap.MapSubscriber<>(actual, mapper); } @Override public Object scanUnsafe(Attr key) { if (key == Attr.RUN_STYLE) return Attr.RunStyle.SYNC; return super.scanUnsafe(key); } }