| /** |
| * 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.hcatalog.mapreduce; |
| |
| import org.apache.hadoop.io.Writable; |
| import org.apache.hadoop.io.WritableComparable; |
| import org.apache.hadoop.mapreduce.OutputFormat; |
| import org.apache.hcatalog.data.HCatRecord; |
| |
| /** |
| * This container class is used to wrap OutputFormat implementations and augment them with |
| * behavior necessary to work with HCatalog (ie metastore updates, hcatalog delegation tokens, etc). |
| * Containers are also used to provide storage specific implementations of some HCatalog features (ie dynamic partitioning). |
| * Hence users wishing to create storage specific implementations of HCatalog features should implement this class and override |
| * HCatStorageHandler.getOutputFormatContainer(OutputFormat outputFormat) to return the implementation. |
| * By default DefaultOutputFormatContainer is used, which only implements the bare minimum features HCatalog features |
| * such as partitioning isn't supported. |
| */ |
| abstract class OutputFormatContainer extends OutputFormat<WritableComparable<?>, HCatRecord> { |
| private org.apache.hadoop.mapred.OutputFormat<? super WritableComparable<?>, ? super Writable> of; |
| |
| /** |
| * @param of OutputFormat this instance will contain |
| */ |
| public OutputFormatContainer(org.apache.hadoop.mapred.OutputFormat<? super WritableComparable<?>, ? super Writable> of) { |
| this.of = of; |
| } |
| |
| /** |
| * @return underlying OutputFormat |
| */ |
| public org.apache.hadoop.mapred.OutputFormat getBaseOutputFormat() { |
| return of; |
| } |
| |
| } |