| /* |
| * 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.nemo.compiler.frontend.beam; |
| |
| /** |
| * {@link org.apache.nemo.compiler.frontend.beam.transform.DoFnTransform} treats elements of this type as side inputs. |
| * TODO #289: Prevent using SideInputElement in UDFs |
| * |
| * @param <T> type of the side input value. |
| */ |
| public final class SideInputElement<T> { |
| private final int sideInputIndex; |
| private final T sideInputValue; |
| |
| /** |
| * @param sideInputIndex index of the side input. |
| * @param sideInputValue value of the side input. |
| */ |
| public SideInputElement(final int sideInputIndex, final T sideInputValue) { |
| this.sideInputIndex = sideInputIndex; |
| this.sideInputValue = sideInputValue; |
| } |
| |
| /** |
| * @return index of the side input. |
| */ |
| public int getSideInputIndex() { |
| return sideInputIndex; |
| } |
| |
| /** |
| * @return value of the side input. |
| */ |
| public T getSideInputValue() { |
| return sideInputValue; |
| } |
| } |