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A Reactive Streams implementation of the MongoDB Java driver
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/*
 * Copyright 2015 MongoDB, Inc.
 *
 * 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 com.mongodb.reactivestreams.client;

import com.mongodb.Block;
import com.mongodb.async.SingleResultCallback;
import com.mongodb.client.model.MapReduceAction;
import org.bson.conversions.Bson;
import org.reactivestreams.Publisher;
import org.reactivestreams.Subscriber;

import java.util.concurrent.TimeUnit;

import static com.mongodb.assertions.Assertions.notNull;
import static com.mongodb.async.client.Observables.observe;
import static com.mongodb.reactivestreams.client.PublisherHelper.voidToSuccessCallback;


class MapReducePublisherImpl implements MapReducePublisher {


    private final com.mongodb.async.client.MapReduceIterable wrapped;

    MapReducePublisherImpl(final com.mongodb.async.client.MapReduceIterable wrapped) {
        this.wrapped = notNull("wrapped", wrapped);
    }


    @Override
    public MapReducePublisher collectionName(final String collectionName) {
        wrapped.collectionName(collectionName);
        return this;
    }

    @Override
    public MapReducePublisher finalizeFunction(final String finalizeFunction) {
        wrapped.finalizeFunction(finalizeFunction);
        return this;
    }

    @Override
    public MapReducePublisher scope(final Bson scope) {
        wrapped.scope(scope);
        return this;
    }

    @Override
    public MapReducePublisher sort(final Bson sort) {
        wrapped.sort(sort);
        return this;
    }

    @Override
    public MapReducePublisher filter(final Bson filter) {
        wrapped.filter(filter);
        return this;
    }

    @Override
    public MapReducePublisher limit(final int limit) {
        wrapped.limit(limit);
        return this;
    }

    @Override
    public MapReducePublisher jsMode(final boolean jsMode) {
        wrapped.jsMode(jsMode);
        return this;
    }

    @Override
    public MapReducePublisher verbose(final boolean verbose) {
        wrapped.verbose(verbose);
        return this;
    }

    @Override
    public MapReducePublisher maxTime(final long maxTime, final TimeUnit timeUnit) {
        wrapped.maxTime(maxTime, timeUnit);
        return this;
    }

    @Override
    public MapReducePublisher action(final MapReduceAction action) {
        wrapped.action(action);
        return this;
    }

    @Override
    public MapReducePublisher databaseName(final String databaseName) {
        wrapped.databaseName(databaseName);
        return this;
    }

    @Override
    public MapReducePublisher sharded(final boolean sharded) {
        wrapped.sharded(sharded);
        return this;
    }

    @Override
    public MapReducePublisher nonAtomic(final boolean nonAtomic) {
        wrapped.nonAtomic(nonAtomic);
        return this;
    }

    @Override
    public MapReducePublisher bypassDocumentValidation(final Boolean bypassDocumentValidation) {
        wrapped.bypassDocumentValidation(bypassDocumentValidation);
        return this;
    }

    @Override
    public Publisher toCollection() {
        return new ObservableToPublisher(observe(new Block>(){
            @Override
            public void apply(final SingleResultCallback callback) {
                wrapped.toCollection(voidToSuccessCallback(callback));
            }
        }));
    }

    @Override
    public void subscribe(final Subscriber s) {
        new ObservableToPublisher(observe(wrapped)).subscribe(s);
    }
}