Examples of org.joda.time.DateTime$Property

org.joda.time.DateTime
DateTime.Property binds a DateTime to a DateTimeField allowing powerful datetime functionality to be easily accessed.
The simplest use of this class is as an alternative get method, here used to get the year '1972' (as an int) and the month 'December' (as a String).
```
 DateTime dt = new DateTime(1972, 12, 3, 0, 0, 0, 0); int year = dt.year().get(); String monthStr = dt.month().getAsText(); 
```
Methods are also provided that allow date modification. These return new instances of DateTime - they do not modify the original. The example below yields two independent immutable date objects 20 years apart.
```
 DateTime dt = new DateTime(1972, 12, 3, 0, 0, 0, 0); DateTime dt20 = dt.year().addToCopy(20); 
```
Serious modification of dates (ie. more than just changing one or two fields) should use the {@link org.joda.time.MutableDateTime MutableDateTime} class.
DateTime.Propery itself is thread-safe and immutable, as well as the DateTime being operated on. @author Stephen Colebourne @author Brian S O'Neill @since 1.0

    /**
     * Format the Date as String, using the specified DateFormat.
     */
    @Override
    public String getAsText() {
        DateTime value = (DateTime) getValue();
        return (value != null ? format.print(value) : "");
    }

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        settings = new CalendarSettings();
    }


    @Test
    public void testSetStartDate() {
        settings.setStartDate(new DateTime(2008, 10, 23, 0, 0, 0, 0));
        assertEquals(new DateTime(2008, 10, 23, 0, 0, 0, 0), settings.getStartDate());
    }

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    public void testToEvent() {
//        System.out.println("ToEvent");


        IntervalInt event = new Event();
        event.setInterval(0, 1);
        DateTime start = settings.toDateTime(event.getStart());
        DateTime end = settings.toDateTime(event.getEnd());
        assertEqualsEvent(event, settings.toInterval(start, end));


        event.setInterval(settings.getTimeslotsPerDay(), 1);
        start = settings.toDateTime(event.getStart());
        end = settings.toDateTime(event.getEnd());

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        // 14 hours
        settings.setTimeslotsPerDay(6 * 16);


        settings.setNumberOfDays(5);


        settings.setStartDate(new DateTime(2009, 6, 1, 8, 0, 0, 0));
    }

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                                        if (endHour != 12) {
                                            endHour += 12;
                                        }
                                    }


                                    DateTime start = new DateTime(2009, 6, day, startHour, startMinute, 0, 0);
                                    DateTime end = new DateTime(2009, 6, day, endHour, endMinute, 0, 0);
                                    event.setStartDateTime(start);
                                    event.setEndDateTime(end);
                                }
                            }
                        }

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        // convert to target time zone
        if (!utc) {
            milli -= zone.getOffset(milli);
        }
        return new DateTime(milli, zone);
    }

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     */
    public static DateTime deserializeUTCDateTime(String text) throws JiBXException {
        if (text == null) {
            return null;
        } else {
            return new DateTime(Utility.parseDateTime(text), DateTimeZone.UTC);
        }
    }

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        } catch (JiBXException ex) {}
    }
    
    public void testDeserializeUTCDateTime() throws JiBXException {
        assertNull("Null input", JodaConvert.deserializeUTCDateTime(null));
        DateTime time = JodaConvert.deserializeUTCDateTime("2008-02-28T01:02:03");
        DateTimeZone zone = time.getZone();
        assertEquals("UTC timezone expected", "UTC", zone.getID());
        assertEquals("Wrong value", 2008, time.getYear());
        assertEquals("Wrong value", 2, time.getMonthOfYear());
        assertEquals("Wrong value", 28, time.getDayOfMonth());
        assertEquals("Wrong value", 1, time.getHourOfDay());
        assertEquals("Wrong value", 2, time.getMinuteOfHour());
        assertEquals("Wrong value", 3, time.getSecondOfMinute());
        time = JodaConvert.deserializeUTCDateTime("2008-02-28T01:02:03Z");
        zone = time.getZone();
        assertEquals("UTC timezone expected", "UTC", zone.getID());
        assertEquals("Wrong value", 2008, time.getYear());
        assertEquals("Wrong value", 2, time.getMonthOfYear());
        assertEquals("Wrong value", 28, time.getDayOfMonth());
        assertEquals("Wrong value", 1, time.getHourOfDay());
        assertEquals("Wrong value", 2, time.getMinuteOfHour());
        assertEquals("Wrong value", 3, time.getSecondOfMinute());
        time = JodaConvert.deserializeUTCDateTime("2008-02-29T02:05:06.123-02:00");
        assertEquals("Wrong value", 2008, time.getYear());
        assertEquals("Wrong value", 2, time.getMonthOfYear());
        assertEquals("Wrong value", 29, time.getDayOfMonth());
        assertEquals("Wrong value", 4, time.getHourOfDay());
        assertEquals("Wrong value", 5, time.getMinuteOfHour());
        assertEquals("Wrong value", 6, time.getSecondOfMinute());
        assertEquals("Wrong value", 123, time.getMillisOfSecond());
        try {
            JodaConvert.deserializeUTCDateTime("2007-02-29T02:05:06.123-02:00");
            fail("Invalid day number");
        } catch (JiBXException ex) {}
        try {

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        } catch (JiBXException ex) {}
    }
    
    public void testDeserializeDefaultDateTime() throws JiBXException {
        assertNull("Null input", JodaConvert.deserializeLocalDateTime(null));
        DateTime time = JodaConvert.deserializeLocalDateTime("2008-02-28T01:02:03Z");
        DateTimeZone zone = time.getZone();
        assertEquals(OFFSET_MILLIS, zone.getOffset(time));
        assertEquals("Wrong value", 2008, time.getYear());
        assertEquals("Wrong value", 2, time.getMonthOfYear());
        if (OFFSET_HOURS < -1) {
            assertEquals("Wrong value", 27, time.getDayOfMonth());
            assertEquals("Wrong value", 25+OFFSET_HOURS, time.getHourOfDay());
        } else {
            assertEquals("Wrong value", 28, time.getDayOfMonth());
            assertEquals("Wrong value", 1+OFFSET_HOURS, time.getHourOfDay());
        }
        assertEquals("Wrong value", 2, time.getMinuteOfHour());
        assertEquals("Wrong value", 3, time.getSecondOfMinute());
        time = JodaConvert.deserializeLocalDateTime("2008-02-29T02:05:06.123-02:00");
        assertEquals("Wrong value", 2008, time.getYear());
        assertEquals("Wrong value", 2, time.getMonthOfYear());
        if (OFFSET_HOURS < -4) {
            assertEquals("Wrong value", 28, time.getDayOfMonth());
            assertEquals("Wrong value", 28+OFFSET_HOURS, time.getHourOfDay());
        } else {
            assertEquals("Wrong value", 29, time.getDayOfMonth());
            assertEquals("Wrong value", 4+OFFSET_HOURS, time.getHourOfDay());
        }
        assertEquals("Wrong value", 5, time.getMinuteOfHour());
        assertEquals("Wrong value", 6, time.getSecondOfMinute());
        assertEquals("Wrong value", 123, time.getMillisOfSecond());
        try {
            JodaConvert.deserializeLocalDateTime("2007-02-29T02:05:06.123-02:00");
            fail("Invalid day number");
        } catch (JiBXException ex) {}
        try {

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        } catch (JiBXException ex) {}
    }
    
    public void testDeserializeStrictUTCDateTime() throws JiBXException {
        assertNull("Null input", JodaConvert.deserializeStrictUTCDateTime(null));
        DateTime time = JodaConvert.deserializeStrictUTCDateTime("2008-02-28T01:02:03Z");
        DateTimeZone zone = time.getZone();
        assertEquals("UTC timezone expected", "UTC", zone.getID());
        assertEquals("Wrong value", 2008, time.getYear());
        assertEquals("Wrong value", 2, time.getMonthOfYear());
        assertEquals("Wrong value", 28, time.getDayOfMonth());
        assertEquals("Wrong value", 1, time.getHourOfDay());
        assertEquals("Wrong value", 2, time.getMinuteOfHour());
        assertEquals("Wrong value", 3, time.getSecondOfMinute());
        time = JodaConvert.deserializeStrictUTCDateTime("2008-02-29T02:05:06.123-02:00");
        assertEquals("Wrong value", 2008, time.getYear());
        assertEquals("Wrong value", 2, time.getMonthOfYear());
        assertEquals("Wrong value", 29, time.getDayOfMonth());
        assertEquals("Wrong value", 4, time.getHourOfDay());
        assertEquals("Wrong value", 5, time.getMinuteOfHour());
        assertEquals("Wrong value", 6, time.getSecondOfMinute());
        assertEquals("Wrong value", 123, time.getMillisOfSecond());
        try {
            JodaConvert.deserializeStrictUTCDateTime("2007-02-29T02:05:06.123");
            fail("Accepted value without time zone");
        } catch (JiBXException ex) {}
    }

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