/*
    * 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.giraph.io.formats.multi;
  
  
  import org.apache.hadoop.mapreduce.InputSplit;
  
  import java.io.IOException;
  
  /**
   * Helper InputSplit class which holds the information about input format
   * which owns this input split.
   *
   * Used only with input formats which wrap several input formats into one
   * ({@link MultiVertexInputFormat} and {@link MultiEdgeInputFormat})
   */
  class InputSplitWithInputFormatIndex extends InputSplit {
    /** Wrapped input split */
    private InputSplit split;
    /** Index of input format which owns the input split */
    private int inputFormatIndex;
  
    /**
     * Constructor
     *
     * @param split            Input split
     * @param inputFormatIndex Index of input format which owns the input split
     */
    InputSplitWithInputFormatIndex(InputSplit split, int inputFormatIndex) {
      this.inputFormatIndex = inputFormatIndex;
      this.split = split;
    }
  
    @Override
    public long getLength() throws IOException, InterruptedException {
      return split.getLength();
    }
  
    @Override
    public String[] getLocations() throws IOException, InterruptedException {
      return split.getLocations();
    }
  
    int getInputFormatIndex() {
      return inputFormatIndex;
    }
  
    InputSplit getSplit() {
      return split;
    }
  }