| /** |
| * 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.crunch; |
| |
| /** |
| * Allows us to represent the combination of multiple data sources that may contain different types of data |
| * as a single type with an index to indicate which of the original sources the current record was from. |
| */ |
| public class Union { |
| |
| private final int index; |
| private final Object value; |
| |
| public Union(int index, Object value) { |
| this.index = index; |
| this.value = value; |
| } |
| |
| /** |
| * Returns the index of the original data source for this union type. |
| */ |
| public int getIndex() { |
| return index; |
| } |
| |
| /** |
| * Returns the underlying object value of the record. |
| */ |
| public Object getValue() { |
| return value; |
| } |
| |
| @Override |
| public boolean equals(Object o) { |
| if (this == o) return true; |
| if (o == null || getClass() != o.getClass()) return false; |
| |
| Union that = (Union) o; |
| |
| if (index != that.index) return false; |
| if (value != null ? !value.equals(that.value) : that.value != null) return false; |
| |
| return true; |
| } |
| |
| @Override |
| public int hashCode() { |
| return 31 * index + (value != null ? value.hashCode() : 0); |
| } |
| } |