Package org.joda.time

Class DateMidnight.Property

  • All Implemented Interfaces:
    java.io.Serializable
    Enclosing class:
    DateMidnight

    public static final class DateMidnight.Property
    extends AbstractReadableInstantFieldProperty
    DateMidnight.Property binds a DateMidnight 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).

     DateMidnight dt = new DateMidnight(1972, 12, 3);
     int year = dt.year().get();
     String monthStr = dt.monthOfYear().getAsText();
     

    Methods are also provided that allow date modification. These return new instances of DateMidnight - they do not modify the original. The example below yields two independent immutable date objects 20 years apart.

     DateMidnight dt = new DateMidnight(1972, 12, 3);
     DateMidnight dt20 = dt.year().addToCopy(20);
     
    Serious modification of dates (ie. more than just changing one or two fields) should use the MutableDateTime class.

    DateMidnight.Property itself is thread-safe and immutable.

    Since:
    1.0
    See Also:
    Serialized Form
    • Method Detail

      • getDateMidnight

        public DateMidnight getDateMidnight()
        Gets the datetime being used.
        Returns:
        the datetime
      • addToCopy

        public DateMidnight addToCopy​(int value)
        Adds to this field in a copy of this DateMidnight.

        The DateMidnight attached to this property is unchanged by this call. This operation is faster than converting a DateMidnight to a MutableDateTime and back again when setting one field. When setting multiple fields, it is generally quicker to make the conversion to MutableDateTime.

        Parameters:
        value - the value to add to the field in the copy
        Returns:
        a copy of the DateMidnight with the field value changed
        Throws:
        java.lang.IllegalArgumentException - if the value isn't valid
      • addToCopy

        public DateMidnight addToCopy​(long value)
        Adds to this field in a copy of this DateMidnight.

        The DateMidnight attached to this property is unchanged by this call. This operation is faster than converting a DateMidnight to a MutableDateTime and back again when setting one field. When setting multiple fields, it is generally quicker to make the conversion to MutableDateTime.

        Parameters:
        value - the value to add to the field in the copy
        Returns:
        a copy of the DateMidnight with the field value changed
        Throws:
        java.lang.IllegalArgumentException - if the value isn't valid
      • addWrapFieldToCopy

        public DateMidnight addWrapFieldToCopy​(int value)
        Adds to this field, possibly wrapped, in a copy of this DateMidnight. A wrapped operation only changes this field. Thus 31st January addWrapField one day goes to the 1st January.

        The DateMidnight attached to this property is unchanged by this call. This operation is faster than converting a DateMidnight to a MutableDateTime and back again when setting one field. When setting multiple fields, it is generally quicker to make the conversion to MutableDateTime.

        Parameters:
        value - the value to add to the field in the copy
        Returns:
        a copy of the DateMidnight with the field value changed
        Throws:
        java.lang.IllegalArgumentException - if the value isn't valid
      • setCopy

        public DateMidnight setCopy​(int value)
        Sets this field in a copy of the DateMidnight.

        The DateMidnight attached to this property is unchanged by this call. This operation is faster than converting a DateMidnight to a MutableDateTime and back again when setting one field. When setting multiple fields, it is generally quicker to make the conversion to MutableDateTime.

        Parameters:
        value - the value to set the field in the copy to
        Returns:
        a copy of the DateMidnight with the field value changed
        Throws:
        java.lang.IllegalArgumentException - if the value isn't valid
      • setCopy

        public DateMidnight setCopy​(java.lang.String text,
                                    java.util.Locale locale)
        Sets this field in a copy of the DateMidnight to a parsed text value.

        The DateMidnight attached to this property is unchanged by this call. This operation is faster than converting a DateMidnight to a MutableDateTime and back again when setting one field. When setting multiple fields, it is generally quicker to make the conversion to MutableDateTime.

        Parameters:
        text - the text value to set
        locale - optional locale to use for selecting a text symbol
        Returns:
        a copy of the DateMidnight with the field value changed
        Throws:
        java.lang.IllegalArgumentException - if the text value isn't valid
      • setCopy

        public DateMidnight setCopy​(java.lang.String text)
        Sets this field in a copy of the DateMidnight to a parsed text value.

        The DateMidnight attached to this property is unchanged by this call. This operation is faster than converting a DateMidnight to a MutableDateTime and back again when setting one field. When setting multiple fields, it is generally quicker to make the conversion to MutableDateTime.

        Parameters:
        text - the text value to set
        Returns:
        a copy of the DateMidnight with the field value changed
        Throws:
        java.lang.IllegalArgumentException - if the text value isn't valid
      • withMaximumValue

        public DateMidnight withMaximumValue()
        Returns a new DateMidnight with this field set to the maximum value for this field.

        This operation is useful for obtaining a DateTime on the last day of the month, as month lengths vary.

         DateMidnight lastDayOfMonth = dt.dayOfMonth().withMaximumValue();
         

        The DateMidnight attached to this property is unchanged by this call.

        Returns:
        a copy of the DateMidnight with this field set to its maximum
        Since:
        1.2
      • withMinimumValue

        public DateMidnight withMinimumValue()
        Returns a new DateMidnight with this field set to the minimum value for this field.

        The DateMidnight attached to this property is unchanged by this call.

        Returns:
        a copy of the DateMidnight with this field set to its minimum
        Since:
        1.2
      • roundFloorCopy

        public DateMidnight roundFloorCopy()
        Rounds to the lowest whole unit of this field on a copy of this DateMidnight.
        Returns:
        a copy of the DateMidnight with the field value changed
      • roundCeilingCopy

        public DateMidnight roundCeilingCopy()
        Rounds to the highest whole unit of this field on a copy of this DateMidnight.
        Returns:
        a copy of the DateMidnight with the field value changed
      • roundHalfFloorCopy

        public DateMidnight roundHalfFloorCopy()
        Rounds to the nearest whole unit of this field on a copy of this DateMidnight, favoring the floor if halfway.
        Returns:
        a copy of the DateMidnight with the field value changed
      • roundHalfCeilingCopy

        public DateMidnight roundHalfCeilingCopy()
        Rounds to the nearest whole unit of this field on a copy of this DateMidnight, favoring the ceiling if halfway.
        Returns:
        a copy of the DateMidnight with the field value changed
      • roundHalfEvenCopy

        public DateMidnight roundHalfEvenCopy()
        Rounds to the nearest whole unit of this field on a copy of this DateMidnight. If halfway, the ceiling is favored over the floor only if it makes this field's value even.
        Returns:
        a copy of the DateMidnight with the field value changed