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/**
 * Copyright 2014 Netflix, 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 rx.joins;

import rx.Observable;
import rx.functions.Func3;

/**
 * Represents a join pattern over observable sequences.
 */
public class Pattern3 implements Pattern {
    private final Observable first;
    private final Observable second;
    private final Observable third;

    public Pattern3(Observable first, Observable second,
            Observable third) {
        this.first = first;
        this.second = second;
        this.third = third;
    }

    public Observable first() {
        return first;
    }

    public Observable second() {
        return second;
    }

    public Observable third() {
        return third;
    }

    //    public  Pattern4 and(Observable other) {
    //        if (other == null) {
    //            throw new NullPointerException();
    //        }
    //        return new Pattern4(first, second, third, other);
    //    }
    public  Plan0 then(Func3 selector) {
        if (selector == null) {
            throw new NullPointerException();
        }
        return new Plan3(this, selector);
    }
}