Пример #1
0
  // Extract all quotes from the quote bundle which cause the given
  // expression to equate to true. If there is no expression (string is null or
  // empty) then extract all the quotes.
  private List extractQuotesUsingRule(String filterExpression, EODQuoteBundle quoteBundle) {

    // If there is no rule, then just return all quotes
    if (filterExpression == null || filterExpression.length() == 0)
      return extractAllQuotes(quoteBundle);

    // First parse the expression
    Expression expression = null;

    try {
      expression = Parser.parse(filterExpressionString);
    } catch (ExpressionException e) {
      // We should have already checked the string for errors before here
      assert false;
    }

    // Add symbols to list when expression proves true
    ArrayList quotes = new ArrayList();
    Iterator iterator = quoteBundle.iterator();
    TradingDate lastDate = quoteBundle.getLastDate();

    try {
      // Traverse all symbols on all dates
      while (iterator.hasNext()) {
        Quote quote = (Quote) iterator.next();
        Symbol symbol = quote.getSymbol();
        TradingDate date = quote.getDate();
        int dateOffset = 0;

        try {
          dateOffset = quoteBundle.dateToOffset(date);
        } catch (WeekendDateException e) {
          assert false;
        }

        if (!singleDate || (lastDate.equals(quote.getDate()))) {
          if (expression.evaluate(new Variables(), quoteBundle, symbol, dateOffset)
              >= Expression.TRUE_LEVEL) quotes.add(quote);
        }
      }

      return quotes;
    } catch (EvaluationException e) {
      // Tell user expression didnt evaluate properly
      JOptionPane.showInternalMessageDialog(
          DesktopManager.getDesktop(),
          e.getReason() + ": " + expression.toString(),
          Locale.getString("ERROR_EVALUATION_EQUATION"),
          JOptionPane.ERROR_MESSAGE);

      // delete erroneous expression
      expression = null;

      // If the expression didn't evaluate then just return all the quotes
      return extractAllQuotes(quoteBundle);
    }
  }
Пример #2
0
  /**
   * Return the window title.
   *
   * @return the window title
   */
  public String getTitle() {
    // Title depends on the quote bundle we are listing
    String title = Locale.getString("TABLE_OF", quoteBundle.getQuoteRange().getDescription());

    // If there is only one date it makes sense to tell the user it
    if (singleDate)
      title = title.concat(" (" + quoteBundle.getLastDate().toString("dd/mm/yyyy") + ")");

    return title;
  }
Пример #3
0
  // This function extracts all quotes from the quote bundle and returns
  // them as a list of Quotes.
  private List extractAllQuotes(EODQuoteBundle quoteBundle) {
    List quotes = new ArrayList();
    Iterator iterator = quoteBundle.iterator();
    TradingDate lastDate = quoteBundle.getLastDate();

    // Traverse all symbols on all dates
    while (iterator.hasNext()) {
      Quote quote = (Quote) iterator.next();

      if (!singleDate || (lastDate.equals(quote.getDate()))) quotes.add(quote);
    }

    return quotes;
  }