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Reactive Extensions for Java

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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.internal.operators.flowable;

import org.reactivestreams.*;

import io.reactivex.Flowable;
import io.reactivex.functions.Function;
import io.reactivex.internal.util.ErrorMode;

public final class FlowableConcatMapPublisher extends Flowable {

    final Publisher source;

    final Function> mapper;

    final int prefetch;

    final ErrorMode errorMode;

    public FlowableConcatMapPublisher(Publisher source,
            Function> mapper,
            int prefetch, ErrorMode errorMode) {
        this.source = source;
        this.mapper = mapper;
        this.prefetch = prefetch;
        this.errorMode = errorMode;
    }

    @Override
    protected void subscribeActual(Subscriber s) {

        if (FlowableScalarXMap.tryScalarXMapSubscribe(source, s, mapper)) {
            return;
        }

        source.subscribe(FlowableConcatMap.subscribe(s, mapper, prefetch, errorMode));
    }
}