org.apache.reef.io.data.loading.impl.InputFormatExternalConstructor.java Source code

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Here is the source code for org.apache.reef.io.data.loading.impl.InputFormatExternalConstructor.java

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/**
 * 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.reef.io.data.loading.impl;

import org.apache.hadoop.mapred.InputFormat;
import org.apache.hadoop.mapred.JobConf;
import org.apache.reef.annotations.audience.DriverSide;
import org.apache.reef.tang.ExternalConstructor;

import javax.inject.Inject;

/**
 * A Tang External Constructor to inject the required
 * InputFormat
 */
@DriverSide
public class InputFormatExternalConstructor implements ExternalConstructor<InputFormat<?, ?>> {

    private final JobConf jobConf;
    private final InputFormat<?, ?> inputFormat;

    @Inject
    public InputFormatExternalConstructor(final JobConf jobConf) {
        this.jobConf = jobConf;
        inputFormat = jobConf.getInputFormat();
    }

    @Override
    public InputFormat<?, ?> newInstance() {
        return inputFormat;
    }

}