class BasicYearDateTimeField extends ImpreciseDateTimeField
Modifier and Type | Field and Description |
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protected BasicChronology |
iChronology
The underlying basic chronology.
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private static long |
serialVersionUID
Serialization version.
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Constructor and Description |
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BasicYearDateTimeField(BasicChronology chronology)
Restricted constructor.
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Modifier and Type | Method and Description |
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long |
add(long instant,
int years)
Adds a value (which may be negative) to the instant value,
overflowing into larger fields if necessary.
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long |
add(long instant,
long years)
Adds a value (which may be negative) to the instant value,
overflowing into larger fields if necessary.
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long |
addWrapField(long instant,
int years)
Adds a value (which may be negative) to the instant value,
wrapping within this field.
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int |
get(long instant)
Get the value of this field from the milliseconds.
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long |
getDifferenceAsLong(long minuendInstant,
long subtrahendInstant)
Computes the difference between two instants, as measured in the units
of this field.
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int |
getLeapAmount(long instant)
Gets the amount by which this field is 'leap' for the specified instant.
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DurationField |
getLeapDurationField()
If this field were to leap, then it would be in units described by the
returned duration.
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int |
getMaximumValue()
Get the maximum allowable value for this field.
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int |
getMinimumValue()
Get the minimum allowable value for this field.
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DurationField |
getRangeDurationField()
Returns the range duration of this field.
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boolean |
isLeap(long instant)
Returns whether this field is 'leap' for the specified instant.
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boolean |
isLenient()
Returns true if the set method is lenient.
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private java.lang.Object |
readResolve()
Serialization singleton
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long |
remainder(long instant)
Returns the fractional duration milliseconds of this field.
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long |
roundCeiling(long instant)
Round to the highest whole unit of this field.
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long |
roundFloor(long instant)
Round to the lowest whole unit of this field.
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long |
set(long instant,
int year)
Sets a value in the milliseconds supplied.
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long |
setExtended(long instant,
int year)
Sets a value in the milliseconds supplied, allowing a little leniency at the margins.
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getDifference, getDurationField, getDurationUnitMillis
add, addWrapField, addWrapPartial, convertText, getAsShortText, getAsShortText, getAsShortText, getAsShortText, getAsShortText, getAsText, getAsText, getAsText, getAsText, getAsText, getMaximumShortTextLength, getMaximumTextLength, getMaximumValue, getMaximumValue, getMaximumValue, getMinimumValue, getMinimumValue, getMinimumValue, getName, getType, isSupported, roundHalfCeiling, roundHalfEven, roundHalfFloor, set, set, set, set, toString
private static final long serialVersionUID
protected final BasicChronology iChronology
BasicYearDateTimeField(BasicChronology chronology)
chronology
- the chronology this field belogs topublic boolean isLenient()
DateTimeField
isLenient
in class DateTimeField
public int get(long instant)
BaseDateTimeField
get
in class ImpreciseDateTimeField
instant
- the milliseconds from 1970-01-01T00:00:00Z to querypublic long add(long instant, int years)
BaseDateTimeField
The value will be added to this field. If the value is too large to be added solely to this field, larger fields will increase as required. Smaller fields should be unaffected, except where the result would be an invalid value for a smaller field. In this case the smaller field is adjusted to be in range.
For example, in the ISO chronology:
2000-08-20 add six months is 2001-02-20
2000-08-20 add twenty months is 2002-04-20
2000-08-20 add minus nine months is 1999-11-20
2001-01-31 add one month is 2001-02-28
2001-01-31 add two months is 2001-03-31
add
in class ImpreciseDateTimeField
instant
- the milliseconds from 1970-01-01T00:00:00Z to add toyears
- the value to add, in the units of the fieldpublic long add(long instant, long years)
BaseDateTimeField
add
in class ImpreciseDateTimeField
instant
- the milliseconds from 1970-01-01T00:00:00Z to add toyears
- the long value to add, in the units of the fieldBaseDateTimeField.add(long,int)
public long addWrapField(long instant, int years)
BaseDateTimeField
The value will be added to this field. If the value is too large to be added solely to this field then it wraps. Larger fields are always unaffected. Smaller fields should be unaffected, except where the result would be an invalid value for a smaller field. In this case the smaller field is adjusted to be in range.
For example, in the ISO chronology:
2000-08-20 addWrapField six months is 2000-02-20
2000-08-20 addWrapField twenty months is 2000-04-20
2000-08-20 addWrapField minus nine months is 2000-11-20
2001-01-31 addWrapField one month is 2001-02-28
2001-01-31 addWrapField two months is 2001-03-31
The default implementation internally calls set. Subclasses are encouraged to provide a more efficient implementation.
addWrapField
in class BaseDateTimeField
instant
- the milliseconds from 1970-01-01T00:00:00Z to add toyears
- the value to add, in the units of the fieldpublic long set(long instant, int year)
BaseDateTimeField
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.
set
in class ImpreciseDateTimeField
instant
- the milliseconds from 1970-01-01T00:00:00Z to set inyear
- the value to set, in the units of the fieldpublic long setExtended(long instant, int year)
DateTimeField
This is primarily an internal method used by parsing.
setExtended
in class DateTimeField
instant
- the milliseconds from 1970-01-01T00:00:00Z to set inyear
- the value to set, in the units of the fieldpublic long getDifferenceAsLong(long minuendInstant, long subtrahendInstant)
ImpreciseDateTimeField
long instant = ... long v = ... long age = getDifferenceAsLong(add(instant, v), instant);The value 'age' is the same as the value 'v'.
The default implementation performs a guess-and-check algorithm using getDurationField().getUnitMillis() and the add() method. Subclasses are encouraged to provide a more efficient implementation.
getDifferenceAsLong
in class ImpreciseDateTimeField
minuendInstant
- the milliseconds from 1970-01-01T00:00:00Z to
subtract fromsubtrahendInstant
- the milliseconds from 1970-01-01T00:00:00Z to
subtract off the minuendpublic DurationField getRangeDurationField()
BaseDateTimeField
getRangeDurationField
in class ImpreciseDateTimeField
public boolean isLeap(long instant)
BaseDateTimeField
For example, a leap year would return true, a non leap year would return false.
This implementation returns false.
isLeap
in class BaseDateTimeField
instant
- the instant to check for leap statuspublic int getLeapAmount(long instant)
BaseDateTimeField
For example, a leap year would return one, a non leap year would return zero.
This implementation returns zero.
getLeapAmount
in class BaseDateTimeField
instant
- the instant to check for leap statuspublic DurationField getLeapDurationField()
BaseDateTimeField
This implementation returns null.
getLeapDurationField
in class BaseDateTimeField
public int getMinimumValue()
BaseDateTimeField
getMinimumValue
in class BaseDateTimeField
public int getMaximumValue()
BaseDateTimeField
getMaximumValue
in class BaseDateTimeField
public long roundFloor(long instant)
BaseDateTimeField
For example, a datetime of 2002-11-02T23:34:56.789, rounded to the lowest whole hour is 2002-11-02T23:00:00.000.
roundFloor
in class ImpreciseDateTimeField
instant
- the milliseconds from 1970-01-01T00:00:00Z to roundpublic long roundCeiling(long instant)
BaseDateTimeField
For example, a datetime of 2002-11-02T23:34:56.789, rounded to the highest whole hour is 2002-11-03T00:00:00.000.
The default implementation calls roundFloor, and if the instant is modified as a result, adds one field unit. Subclasses are encouraged to provide a more efficient implementation.
roundCeiling
in class BaseDateTimeField
instant
- the milliseconds from 1970-01-01T00:00:00Z to roundpublic long remainder(long instant)
BaseDateTimeField
For example, on a datetime of 2002-11-02T23:34:56.789, the remainder by hour is 34 minutes and 56.789 seconds.
The default implementation computes
instant - roundFloor(instant)
. Subclasses are encouraged to
provide a more efficient implementation.
remainder
in class BaseDateTimeField
instant
- the milliseconds from 1970-01-01T00:00:00Z to get the
remainderprivate java.lang.Object readResolve()