content: /* ===========================================================
   * JFreeChart : a free chart library for the Java(tm) platform
   * ===========================================================
   *
   * (C) Copyright 2000-2008, by Object Refinery Limited and Contributors.
   *
   * Project Info:  http://www.jfree.org/jfreechart/index.html
   *
   * This library 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 2.1 of the License, or
   * (at your option) any later version.
   *
   * This library 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 this library; if not, write to the Free Software
   * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301,
   * USA.
   *
   * [Java is a trademark or registered trademark of Sun Microsystems, Inc.
   * in the United States and other countries.]
   *
   * ----------------------
   * XIntervalDataItem.java
   * ----------------------
   * (C) Copyright 2006-2008, by Object Refinery Limited.
   *
   * Original Author:  David Gilbert (for Object Refinery Limited);
   * Contributor(s):   -;
   *
   * Changes
   * -------
   * 20-Oct-2006 : Version 1 (DG);
   *
   */
  
  package org.jfree.data.xy;
  
  import org.jfree.data.ComparableObjectItem;
  
  /**
   * An item representing data in the form (x, x-low, x-high, y).
   *
   * @since 1.0.3
   */
  public class XIntervalDataItem extends ComparableObjectItem {
  
      /**
       * Creates a new instance of <code>XIntervalDataItem</code>.
       *
       * @param x  the x-value.
       * @param xLow  the lower bound of the x-interval.
       * @param xHigh  the upper bound of the x-interval.
       * @param y  the y-value.
       */
      public XIntervalDataItem(double x, double xLow, double xHigh, double y) {
          super(new Double(x), new YWithXInterval(y, xLow, xHigh));
      }
  
      /**
       * Returns the x-value.
       *
       * @return The x-value (never <code>null</code>).
       */
      public Number getX() {
          return (Number) getComparable();
      }
  
      /**
       * Returns the y-value.
       *
       * @return The y-value.
       */
      public double getYValue() {
          YWithXInterval interval = (YWithXInterval) getObject();
          if (interval != null) {
              return interval.getY();
          }
          else {
              return Double.NaN;
          }
      }
  
      /**
       * Returns the lower bound of the x-interval.
       *
       * @return The lower bound of the x-interval.
       */
      public double getXLowValue() {
          YWithXInterval interval = (YWithXInterval) getObject();
          if (interval != null) {
              return interval.getXLow();
          }
          else {
              return Double.NaN;
          }
      }
  
      /**
       * Returns the upper bound of the x-interval.
       *
       * @return The upper bound of the x-interval.
       */
      public double getXHighValue() {
          YWithXInterval interval = (YWithXInterval) getObject();
          if (interval != null) {
              return interval.getXHigh();
          }
          else {
              return Double.NaN;
          }
      }
  
  }
  