Examples of de.danet.an.util.Duration

de.danet.an.util.Duration

This class provides a representation of durations and a parser for strings that represent durations.

Strings that can be parsed consist of value/unit pairs. Values can be arbitrary text, valid unit names are "years", "yrs", "months", "mts", "hours", "hrs", "min" and "sec". There may be only one pair for each unit i.e. "5 years 3 yrs" is illegal.

Value/unit pairs must be separated from each other with at least one whitespace character. Units may follow values immediately if the value is a number, else they must be separated by at least one whitespace.

Any duration unit may be omitted, but the descending order of units must be preserved.

Parsing is done in two phases. First, during parse the value/unit pairs are identified and the values are stored as strings. This allows the class even to be used when the values are expressions that must be evaluated. If this feature is used, the evaluation must be performed by retrieving the string values (using "...AsParsed"), evaluating the expression and setting the result.

Duration will try to convert the parsed string to a number only if a unit is accessed and has not been set explicitly. Thus, all accessor methods may throw a NumberFormatException even if parse has not thrown a ParseException. @author Michael Lipp @version $Revision: 2368 $

      try {
    Object res = process.evalScript (getCondition ());
    if (res instanceof Date) {
        cond = (Date)res;
    } else if (res instanceof Number) {
        cond = new Duration ();
        ((Duration)cond).setSeconds 
      (((Number)res).floatValue ());
    } else {
        throw new ParseException
      ("Evaluating duration \"" + getCondition()
       + "\" yields neither number nor date.", 0);
    }
      } catch (ScriptException e) {
    throw new ParseException
        ("Problem evaluating duration value \""
         + getCondition() + "\": " + e.getMessage(), 0);
      } finally {
    cx.exit();
      }
  }
  Date end = null;
  if (cond instanceof Date) {
      end = (Date)cond;
  } else {
      Duration dur = (Duration)cond;
      end = dur.addTo (baseTime);
  }
  return end;
    }

    /**
     * Parse a duration
     */
    public void parseDuration() throws Exception {
  String duration = "P123Y456M789D";
  Duration d = XMLUtil.parseXsdDuration (duration);
  assertTrue (d.getYears() == 123);
  assertTrue (d.getMonths() == 456);
  assertTrue (d.getDays() == 789);
  assertTrue (d.getHours() == 0);
  assertTrue (d.getMinutes() == 0);
  assertTrue (d.getSeconds() == 0);


  duration = "P123Y456M789DT987H654M321.123S";
  d = XMLUtil.parseXsdDuration (duration);
  assertTrue (d.getYears() == 123);
  assertTrue (d.getMonths() == 456);
  assertTrue (d.getDays() == 789);
  assertTrue (d.getHours() == 987);
  assertTrue (d.getMinutes() == 654);
  assertTrue (d.getSeconds() == (float)321.123);


  duration = "PT1M0.1S";
  d = XMLUtil.parseXsdDuration (duration);
  assertTrue (d.getYears() == 0);
  assertTrue (d.getMonths() == 0);
  assertTrue (d.getDays() == 0);
  assertTrue (d.getHours() == 0);
  assertTrue (d.getMinutes() == 1);
  assertTrue (d.getSeconds() == (float)0.1);
    }

Examples of de.danet.an.util.Duration

Related Classes of de.danet.an.util.Duration