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rxjava2-extensions developed by David Karnok
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/*
 * Copyright 2016-2018 David Karnok
 *
 * 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 hu.akarnokd.rxjava2.joins;

import io.reactivex.Observable;
import io.reactivex.functions.Function8;

/**
 * Represents a join pattern over observable sequences.
 * @param  the first value type
 * @param  the second value type
 * @param  the third value type
 * @param  the fourth value type
 * @param  the fifth value type
 * @param  the sixth value type
 * @param  the sevent value type
 * @param  the eighth value type
 */
public final class Pattern8 {
    private final Observable o1;
    private final Observable o2;
    private final Observable o3;
    private final Observable o4;
    private final Observable o5;
    private final Observable o6;
    private final Observable o7;
    private final Observable o8;

    public Pattern8(
            Observable o1,
            Observable o2,
            Observable o3,
            Observable o4,
            Observable o5,
            Observable o6,
            Observable o7,
            Observable o8
            ) {
        this.o1 = o1;
        this.o2 = o2;
        this.o3 = o3;
        this.o4 = o4;
        this.o5 = o5;
        this.o6 = o6;
        this.o7 = o7;
        this.o8 = o8;
    }

    Observable o1() {
        return o1;
    }

    Observable o2() {
        return o2;
    }

    Observable o3() {
        return o3;
    }

    Observable o4() {
        return o4;
    }

    Observable o5() {
        return o5;
    }

    Observable o6() {
        return o6;
    }

    Observable o7() {
        return o7;
    }

    Observable o8() {
        return o8;
    }

    /**
     * Creates a pattern that matches when all eight observable sequences have an available element.
     * @param  the value type of the extra Observable
     * @param other
     *            Observable sequence to match with the seven previous sequences.
     * @return Pattern object that matches when all observable sequences have an available element.
     */
    public  Pattern9 and(Observable other) {
        if (other == null) {
            throw new NullPointerException();
        }
        return new Pattern9(o1, o2, o3, o4, o5, o6, o7, o8, other);
    }
    /**
     * Matches when all observable sequences have an available
     * element and projects the elements by invoking the selector function.
     *
     * @param  the result type
     * @param selector
     *            the function that will be invoked for elements in the source sequences.
     * @return the plan for the matching
     * @throws NullPointerException
     *             if selector is null
     */
    public  Plan then(Function8 selector) {
        if (selector == null) {
            throw new NullPointerException();
        }
        return new Plan8(this, selector);
    }
}