Source code

001/*
002 * Licensed to the Apache Software Foundation (ASF) under one
003 * or more contributor license agreements.  See the NOTICE file
004 * distributed with this work for additional information
005 * regarding copyright ownership.  The ASF licenses this file
006 * to you under the Apache License, Version 2.0 (the
007 * "License"); you may not use this file except in compliance
008 * with the License.  You may obtain a copy of the License at
009 *
010 *   http://www.apache.org/licenses/LICENSE-2.0
011 *
012 * Unless required by applicable law or agreed to in writing,
013 * software distributed under the License is distributed on an
014 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
015 * KIND, either express or implied.  See the License for the
016 * specific language governing permissions and limitations
017 * under the License.
018 */
019package org.apache.reef.io.data.loading.impl;
020
021import org.apache.hadoop.mapred.InputFormat;
022import org.apache.hadoop.mapred.JobConf;
023import org.apache.reef.annotations.audience.DriverSide;
024import org.apache.reef.tang.ExternalConstructor;
025
026import javax.inject.Inject;
027
028
029/**
030 * A Tang External Constructor to inject the required.
031 * InputFormat
032 */
033@DriverSide
034public class InputFormatExternalConstructor implements ExternalConstructor<InputFormat<?, ?>> {
035
036  private final JobConf jobConf;
037  private final InputFormat<?, ?> inputFormat;
038
039  @Inject
040  public InputFormatExternalConstructor(final JobConf jobConf) {
041    this.jobConf = jobConf;
042    inputFormat = jobConf.getInputFormat();
043  }
044
045  @Override
046  public InputFormat<?, ?> newInstance() {
047    return inputFormat;
048  }
049
050}