/**
* 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.hive.hcatalog.mapreduce;
import org.apache.hadoop.io.Writable;
import org.apache.hadoop.io.WritableComparable;
import org.apache.hadoop.mapreduce.OutputFormat;
import org.apache.hive.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;
}
}