content: // ===============================================================================
  // Authors: AFRL/RQQD
  // Organization: Air Force Research Laboratory, Aerospace Systems Directorate, Power and Control Division
  // 
  // Copyright (c) 2017 Government of the United State of America, as represented by
  // the Secretary of the Air Force.  No copyright is claimed in the United States under
  // Title 17, U.S. Code.  All Other Rights Reserved.
  // ===============================================================================
  
  /*
   * GRAL: GRAphing Library for Java(R)
   *
   * (C) Copyright 2009-2013 Erich Seifert <dev[at]erichseifert.de>,
   * Michael Seifert <mseifert[at]error-reports.org>
   *
   * This file is part of GRAL.
   *
   * GRAL is free software: you can redistribute it and/or modify
   * it under the terms of the GNU Lesser General Public License as published by
   * the Free Software Foundation, either version 3 of the License, or
   * (at your option) any later version.
   *
   * GRAL is distributed in the hope that it will be useful,
   * but WITHOUT ANY WARRANTY; without even the implied warranty of
   * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   * GNU Lesser General Public License for more details.
   *
   * You should have received a copy of the GNU Lesser General Public License
   * along with GRAL.  If not, see <http://www.gnu.org/licenses/>.
   */
  package de.erichseifert.gral.data;
  
  import de.erichseifert.gral.util.Orientation;
  
  
  
  /**
   * <p>Class for easily accessing a row of a data source.</p>
   *
   * <p>Example:</p>
   * <pre>
   * Row row = new Row(data, 2);
   * Number value = row.get(3);
   * </pre>
   *
   * @see DataSource
   */
  public class Row extends DataAccessor {
  	/** Version id for serialization. */
  	private static final long serialVersionUID = 2725146484866525573L;
  
  	/**
  	 * Initializes a new instances with the specified data source and
  	 * row index.
  	 * @param source Data source.
  	 * @param row Row index.
  	 */
  	public Row(DataSource source, int row) {
  		super(source, row);
  	}
  
  	@Override
  	public Comparable<?> get(int col) {
  		DataSource source = getSource();
  		if (source == null) {
  			return null;
  		}
  		return source.get(col, getIndex());
  	}
  
  	@Override
  	public int size() {
  		return getSource().getColumnCount();
  	}
  
  	@Override
  	public double getStatistics(String key) {
  		return getSource().getStatistics()
  			.get(key, Orientation.HORIZONTAL, getIndex());
  	}
  
  	/**
  	 * Returns whether the column at the specified index contains numbers.
  	 * @param columnIndex Index of the column to test.
  	 * @return {@code true} if the column is numeric, otherwise {@code false}.
  	 */
  	public boolean isColumnNumeric(int columnIndex) {
  		return getSource().isColumnNumeric(columnIndex);
  	}
  }
  