| /** |
| * 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.heron.streamlet; |
| |
| import java.io.Serializable; |
| import java.util.function.BiFunction; |
| |
| /** |
| * All user supplied transformation functions have to be serializable. |
| * Thus all Streamlet transformation definitions take Serializable |
| * Functions as their input. We simply decorate java.util. function |
| * definitions with a Serializable tag to ensure that any supplied |
| * lambda functions automatically become serializable. |
| */ |
| public interface SerializableBiFunction<A, B, C> extends BiFunction<A, B, C>, |
| Serializable { |
| } |
