public abstract class

DecoratedDateTimeField

extends BaseDateTimeField
java.lang.Object
   ↳ org.joda.time.DateTimeField
     ↳ org.joda.time.field.BaseDateTimeField
       ↳ org.joda.time.field.DecoratedDateTimeField
Known Direct Subclasses

Class Overview

DecoratedDateTimeField extends BaseDateTimeField, implementing only the minimum required set of methods. These implemented methods delegate to a wrapped field.

This design allows new DateTimeField types to be defined that piggyback on top of another, inheriting all the safe method implementations from BaseDateTimeField. Should any method require pure delegation to the wrapped field, simply override and use the provided getWrappedField method.

DecoratedDateTimeField is thread-safe and immutable, and its subclasses must be as well.

Summary

Protected Constructors
DecoratedDateTimeField(DateTimeField field, DateTimeFieldType type)
Constructor.
Public Methods
int get(long instant)
Get the value of this field from the milliseconds.
DurationField getDurationField()
Returns the duration per unit value of this field.
int getMaximumValue()
Get the maximum allowable value for this field.
int getMinimumValue()
Get the minimum allowable value for this field.
DurationField getRangeDurationField()
Returns the range duration of this field.
final DateTimeField getWrappedField()
Gets the wrapped date time field.
boolean isLenient()
Returns true if the set method is lenient.
long roundFloor(long instant)
Round to the lowest whole unit of this field.
long set(long instant, int value)
Sets a value in the milliseconds supplied.
[Expand]
Inherited Methods
From class org.joda.time.field.BaseDateTimeField
From class org.joda.time.DateTimeField
From class java.lang.Object

Protected Constructors

protected DecoratedDateTimeField (DateTimeField field, DateTimeFieldType type)

Constructor.

Parameters
field the field being decorated
type allow type to be overridden

Public Methods

public int get (long instant)

Get the value of this field from the milliseconds.

Parameters
instant the milliseconds from 1970-01-01T00:00:00Z to query
Returns
  • the value of the field, in the units of the field

public DurationField getDurationField ()

Returns the duration per unit value of this field. For example, if this field represents "hour of day", then the unit duration is an hour.

Returns
  • the duration of this field, or UnsupportedDurationField if field has no duration

public int getMaximumValue ()

Get the maximum allowable value for this field.

Returns
  • the maximum valid value for this field, in the units of the field

public int getMinimumValue ()

Get the minimum allowable value for this field.

Returns
  • the minimum valid value for this field, in the units of the field

public DurationField getRangeDurationField ()

Returns the range duration of this field. For example, if this field represents "hour of day", then the range duration is a day.

Returns
  • the range duration of this field, or null if field has no range

public final DateTimeField getWrappedField ()

Gets the wrapped date time field.

Returns
  • the wrapped DateTimeField

public boolean isLenient ()

Returns true if the set method is lenient. If so, it accepts values that are out of bounds. For example, a lenient day of month field accepts 32 for January, converting it to February 1.

Returns
  • true if this field is lenient

public long roundFloor (long instant)

Round to the lowest whole unit of this field. After rounding, the value of this field and all fields of a higher magnitude are retained. The fractional millis that cannot be expressed in whole increments of this field are set to minimum.

For example, a datetime of 2002-11-02T23:34:56.789, rounded to the lowest whole hour is 2002-11-02T23:00:00.000.

Parameters
instant the milliseconds from 1970-01-01T00:00:00Z to round
Returns
  • rounded milliseconds

public long set (long instant, int value)

Sets a value in the milliseconds supplied.

The value of this field will be set. If the value is invalid, an exception if thrown.

If setting this field would make other fields invalid, then those fields may be changed. For example if the current date is the 31st January, and the month is set to February, the day would be invalid. Instead, the day would be changed to the closest value - the 28th/29th February as appropriate.

Parameters
instant the milliseconds from 1970-01-01T00:00:00Z to set in
value the value to set, in the units of the field
Returns
  • the updated milliseconds