Examples of hirondelle.web4j.request.DateConverter

hirondelle.web4j.request.DateConverter
avapractices.com/apps/fish/javadoc/src-html/hirondelle/web4j/config/DateConverterImpl.html">example implementation.
Design Notes
Here are some forces concerning dates in Java web applications :
- usually, users expect date input formats to be the same for all forms.
- an application may have only dates, only date-times, or a mixture of the two.
- user input of a date or date-time may be with a single control, or with many controls. For example, the date may be entered with one control, and the hours and minutes with a second and third control, respectively. (WEB4J works well with the one-control-only style. Using more than one control is still possible, since the application programmer always has access to the underlying request parameters. But, when using WEB4J, that style involves slightly more work for the application programmer.)
- the needs of the eye differ from the needs of the hand. That is, a date format which is easy to read is usually not easy to enter into a control. Thus, applications should support two formats for dates : a hand-friendly format (used for input), and an eye-friendly format, used for presentation and for input as well (allowing user input with an eye-friendly format is important for forms which change existing data).
- date formats may differ between Locales. For example, '01-31-2006' is natural for English speakers (January 31, 2006), while '31-01-2006' is more natural for French speakers (le 31 janvier 2006).
- for parsing tasks, {@link java.text.SimpleDateFormat} is mediocre, and perhaps even untrustworthy. It should be used with great care.One should also be aware that it's not thread-safe.
- if a new {@link Locale} is added to an application, then parsing and formatting of a date should not fail. Instead, reasonable defaults should be defined for unknown Locales.

    Locale locale = BuildImpl.forLocaleSource().get(getRequestParser().getRequest());
    TimeZone timeZone = BuildImpl.forTimeZoneSource().get(getRequestParser().getRequest());
    fLogger.fine("TimeZone " + timeZone + " Locale " + locale);
    ToppingsEtc toppingsEtc = new ToppingsEtc(timeZone, locale);
    
    DateConverter converter = BuildImpl.forDateConverter();
    for(Date date : toppingsEtc.getBirthDate()){
      fLogger.fine("Birth Date: " + converter.formatEyeFriendly(date, locale, timeZone) );
    }
    
    addToRequest(ITEM_FOR_EDIT, toppingsEtc);
  }

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      return calendar.getTime();
    }


    private void testFormatDateTime(String aDateTime, String aExpected){
      DateTime dt = new DateTime(aDateTime);
      DateConverter converter = new DateConverterImpl();
      String actual = converter.formatEyeFriendlyDateTime(dt, null);
      if(!actual.equals(aExpected)){
        fail("Actual:'"+ actual + "' Expected:'" + aExpected + "'");
      }
    }

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      }
    }
    
    private void testParseEyeDateTime(String aInput, String aExpected){
      DateTime expected = new DateTime(aExpected);
      DateConverter converter = new DateConverterImpl();
      DateTime actual = converter.parseEyeFriendlyDateTime(aInput, null);
      if(!actual.equals(expected)){
        fail("Actual:" + actual + " Expected:" + aExpected);
      }
    }

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      }
    }
    
    private void testParseHandDateTime(String aInput, String aExpected){
      DateTime expected = new DateTime(aExpected);
      DateConverter converter = new DateConverterImpl();
      DateTime actual = converter.parseHandFriendlyDateTime(aInput, null);
      if(actual == null){
        fail("Failed to parse the input '" + aInput + "'");
      }
      else if(!actual.equals(expected)){
        fail("Actual:" + actual + " Expected:" + aExpected);

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  }
  
  
  private Date parseDate(String aUserInputValue, Locale aLocale, TimeZone aTimeZone) throws ModelCtorException {
    Date result = null;
    DateConverter dateConverter = BuildImpl.forDateConverter();
    result = dateConverter.parseHandFriendly(aUserInputValue, aLocale, aTimeZone);
    if ( result == null ){
      result = dateConverter.parseEyeFriendly(aUserInputValue, aLocale, aTimeZone);
    }
    if ( result == null ) {
      throw PROBLEM_FOUND;
    }
    return result;

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    return result;
  }
  
  private DateTime parseDateTime(String aUserInputValue, Locale aLocale) throws ModelCtorException {
    DateTime result = null;
    DateConverter dateConverter = BuildImpl.forDateConverter();
    result = dateConverter.parseHandFriendlyDateTime(aUserInputValue, aLocale);
    if ( result == null ){
      result = dateConverter.parseEyeFriendlyDateTime(aUserInputValue, aLocale);
    }
    if ( result == null ) {
      throw PROBLEM_FOUND;
    }
    return result;

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    if( fDateObjectMissing ) return result;
    
    Locale locale = getLocale();
    TimeZone timeZone = getTimeZone();
    if(fDateFormat == null && fDateFormatKey == null){
      DateConverter dateConverter = BuildImpl.forDateConverter();
      result = dateConverter.formatEyeFriendly(fDate, locale, timeZone);
    }
    else if(fDateFormat != null && fDateFormatKey == null){
      adjustForTimeZone(fDateFormat, timeZone);
      result = fDateFormat.format(fDate);
    }

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  private String formatDateTime(){
    String result = "";
    Locale locale = getLocale();
    if(fFormat == null && fFormatKey == null){
      DateConverter dateConverter = BuildImpl.forDateConverter();
      result = dateConverter.formatEyeFriendlyDateTime(fDateTime, locale);
    }
    else if(fFormat != null && fFormatKey == null){
      result = fDateTime.format(fFormat, getLocale());
    }
    else if(fFormat == null && fFormatKey != null){

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