| /** |
| * Licensed to the Apache Software Foundation (ASF) under one or more contributor license agreements. See the NOTICE file distributed with |
| * this work for additional information regarding copyright ownership. The ASF licenses this file to you 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 org.apache.storm.streams.operations; |
| |
| import org.apache.storm.streams.Pair; |
| |
| /** |
| * A function that accepts an argument and produces a key-value Pair. |
| * |
| * @param <T> the type of the input to the function |
| * @param <K> the key type |
| * @param <V> the value type |
| */ |
| public interface PairFunction<T, K, V> extends Function<T, Pair<K, V>> { |
| } |