/**

* Copyright 2013 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.util.functions.Func3;

/**

* Represents a join pattern over observable sequences.

*/

public class Pattern3<T1, T2, T3> implements Pattern {

private final Observable<T1> first;

private final Observable<T2> second;

private final Observable<T3> third;

public Pattern3(Observable<T1> first, Observable<T2> second,

Observable<T3> third) {

this.first = first;

this.second = second;

this.third = third;

}

public Observable<T1> first() {

return first;

}

public Observable<T2> second() {

return second;

}

public Observable<T3> third() {

return third;

}

// public <T4> Pattern4<T1, T2, T3, T4> and(Observable<T4> other) {

// if (other == null) {

// throw new NullPointerException();

// }

// return new Pattern4<T1, T2, T3, T4>(first, second, third, other);

// }

public <R> Plan0<R> then(Func3<T1, T2, T3, R> selector) {

if (selector == null) {

throw new NullPointerException();

}

return new Plan3<T1, T2, T3, R>(this, selector);

}

}