Century

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 * Copyright 2000 (C) Intalio, Inc. All Rights Reserved.
 *
 * $Id Date Author Changes 12/05/2000 Arnaud Blandin Added the support for
 * OperationNotSupportedException 11/01/2000 Arnaud Blandin Created
 */
package org.exolab.castor.types;

import java.text.ParseException;
import java.util.SimpleTimeZone;
import java.util.TimeZone;
import java.text.SimpleDateFormat;

/**
 * Describe an XML schema Century
 * <p>
 * The date type is derived from time period by setting up the facet:
 * <ul>
 * <li>duration to "P100Y"</li>
 * </ul>
 * <p>
 * Note: This datatype is not included in any recommendation. It was introduced in
 * http://www.w3.org/TR/2000/WD-xmlschema-2-20000407/ and was last in
 * http://www.w3.org/TR/2000/CR-xmlschema-2-20001024/ and was removed by
 * http://www.w3.org/TR/2001/PR-xmlschema-2-20010316/. It was not in the final approved
 * recommendation: http://www.w3.org/TR/2001/REC-xmlschema-2-20010502/
 *
 * @author <a href="mailto:blandin@intalio.com">Arnaud Blandin</a>
 * @version $Revision$
 * @deprecated since Castor 1.0.6 since this type is not in any recommendation.
 */
public class Century extends TimePeriod {

  /** SerialVersionUID */
  private static final long serialVersionUID = 88787876938390034L;
  /** The month format used by the toDate() method */
  private static final String YEAR_FORMAT = "yyyy";

  /** Set to true and recompile to include debugging code in class. */
  private static final boolean DEBUG = false;

  public Century() {
    super("P100Y");
    // we need to set the time zone to the computer local time zone
    // if we want to use the toDate() method.
    int temp = TimeZone.getDefault().getRawOffset();
    if (temp < 0) {
      temp = -temp;
      try {
        this.setZoneNegative();
      } catch (UnsupportedOperationException e) {
        // we are sure that we are dealing with a Century type
        // so we can never reach that point
      }
    }

    try {
      short zhour = (short) (temp / (60 * 60 * 1000));
      temp = temp % (60 * 60 * 1000);
      short zmin = (short) (temp / (60 * 1000));
      super.setZone(zhour, zmin);
    } catch (UnsupportedOperationException e) {
      // we are sure that we are dealing with a Century type
      // so we can never reach that point
    }
  }

  /**
   * convert this Year to a string The format is defined by W3C XML Schema draft and ISO8601 i.e
   * (+|-)CC
   *
   * @return a string representing this Century
   */
  public String toString() {
    StringBuilder result = new StringBuilder(String.valueOf(this.getCentury()));

    if (result.length() == 1) {
      result.insert(0, 0);
    }

    if (isNegative()) {
      result.insert(0, '-');
    }
    return result.toString();
  }// toString

  /**
   * parse a String and convert it into a java.lang.Object
   *
   * @param str the string to parse
   * @return the java.lang.Object represented by the string
   * @throws ParseException a parse exception is thrown if the string to parse does not follow the
   *         rigth format (see the description of this class)
   */
  public static Object parse(String str) throws ParseException {
    return parseCentury(str);
  }

  /**
   * parse a String and convert it into a Century
   *
   * @param str the string to parse
   * @return the Century represented by the string
   * @throws ParseException a parse exception is thrown if the string to parse does not follow the
   *         rigth format (see the description of this class)
   */
  public static Century parseCentury(String str) throws ParseException {
    Century result = new Century();

    if (str.startsWith("-")) {
      result.setNegative();
      str = str.substring(1);
    }

    if (DEBUG) {
      System.out.println("In parsing method of Century");
      System.out.println("String to parse : " + str);
      System.out.println("Negative ? " + result.isNegative());
    }

    if (str.length() != 2) {
      throw new ParseException(str + ": Bad XML Schema Century type format (CC)", 0);
    }

    if (DEBUG) {
      System.out.println("Processing century: " + str.substring(0, 2));
    }
    result.setCentury(Short.parseShort(str));

    return result;
  } // parse

  public java.util.Date toDate() throws ParseException {
    java.util.Date date = null;
    SimpleDateFormat df = new SimpleDateFormat(YEAR_FORMAT);
    SimpleTimeZone timeZone = new SimpleTimeZone(0, "UTC");

    // Set the time zone
    if (!isUTC()) {
      int offset = 0;
      offset = ((this.getZoneMinute() + this.getZoneHour() * 60) * 60 * 1000);
      offset = isZoneNegative() ? -offset : offset;
      timeZone.setRawOffset(offset);
      timeZone.setID(TimeZone.getAvailableIDs(offset)[0]);
    }
    df.setTimeZone(timeZone);
    date = df.parse(this.toString());
    return date;
  } // toDate()

  /////////////////////////// DISALLOWED METHODS ///////////////////////////

  public void setYear(short year) throws UnsupportedOperationException {
    String err = "In a Century : the year field must not be changed";
    throw new UnsupportedOperationException(err);
  }

  public void setMonth(short month) throws UnsupportedOperationException {
    String err = "In a Century : the month field must not be changed";
    throw new UnsupportedOperationException(err);
  }

  public void setDay(short day) throws UnsupportedOperationException {
    String err = "In a Century : the day field must not be changed";
    throw new UnsupportedOperationException(err);
  }

  public void setHour(short hour) throws UnsupportedOperationException {
    String err = "In a Century : the hour field must not be changed";
    throw new UnsupportedOperationException(err);
  }

  public void setMinute(short minute) throws UnsupportedOperationException {
    String err = "In a Century : the minute field must not be changed";
    throw new UnsupportedOperationException(err);
  }

  public void setSecond(short second, short millsecond) throws UnsupportedOperationException {
    String err = "In a Century : the second field must not be changed";
    throw new UnsupportedOperationException(err);
  }

  public void setZone(short hour, short minute) throws UnsupportedOperationException {
    String err = "In a Century : the time zone field must not be changed";
    throw new UnsupportedOperationException(err);
  }

  public void setZoneNegative() throws UnsupportedOperationException {
    String err = "In a Century : the time zone field must not be changed";
    throw new UnsupportedOperationException(err);
  }

} // --Century