/*
 * 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.pig.backend.hadoop.executionengine.mapReduceLayer;

import java.io.IOException;
import java.util.List;

import org.apache.hadoop.fs.FileStatus;
import org.apache.hadoop.mapreduce.JobContext;
import org.apache.hadoop.mapreduce.lib.input.FileInputFormat;
import org.apache.pig.backend.hadoop.executionengine.util.MapRedUtil;

public abstract class PigFileInputFormat <K, V> extends FileInputFormat<K, V> {
    
    /*
     * This is to support multi-level/recursive directory listing until 
     * MAPREDUCE-1577 is fixed.
     */
    @Override
    protected List<FileStatus> listStatus(JobContext job) throws IOException {               
        return MapRedUtil.getAllFileRecursively(super.listStatus(job), 
                job.getConfiguration());        
    }
    
}