1 /*
2 * Licensed to the Apache Software Foundation (ASF) under one
3 * or more contributor license agreements. See the NOTICE file
4 * distributed with this work for additional information
5 * regarding copyright ownership. The ASF licenses this file
6 * to you under the Apache License, Version 2.0 (the
7 * "License"); you may not use this file except in compliance
8 * with the License. You may obtain a copy of the License at
9 *
10 * http://www.apache.org/licenses/LICENSE-2.0
11 *
12 * Unless required by applicable law or agreed to in writing, software
13 * distributed under the License is distributed on an "AS IS" BASIS,
14 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
15 * See the License for the specific language governing permissions and
16 * limitations under the License.
17 */
18 package org.apache.giraph.function;
19
20 import java.io.Serializable;
21
22 /**
23 * Function:
24 * (F1, F2, F3) -> T
25 *
26 * @param <F1> First argument type
27 * @param <F2> Second argument type
28 * @param <F3> Third argument type
29 * @param <T> Result type
30 */
31 public interface TripleFunction<F1, F2, F3, T> extends Serializable {
32 /**
33 * Returns the result of applying this function to given
34 * {@code input1}, {@code input2} and {@code input3}.
35 *
36 * The returned object may or may not be a new instance,
37 * depending on the implementation.
38 *
39 * @param input1 first input
40 * @param input2 second input
41 * @param input3 third input
42 * @return result
43 */
44 T apply(F1 input1, F2 input2, F3 input3);
45 }