com.jn.langx.util.jodatime.field

类 BaseDurationField

java.lang.Object

com.jn.langx.util.jodatime.DurationField

com.jn.langx.util.jodatime.field.BaseDurationField

所有已实现的接口:

Serializable, Comparable<DurationField>

直接已知子类:

DecoratedDurationField, PreciseDurationField

public abstract class BaseDurationField
extends DurationField
implements Serializable

BaseDurationField provides the common behaviour for DurationField implementations.

This class should generally not be used directly by API users. The DurationField class should be used when different kinds of DurationField objects are to be referenced.

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

从以下版本开始:

1.0

作者:

Brian S O'Neill

另请参阅:

DecoratedDurationField, 序列化表格

构造器概要

构造器

限定符	构造器和说明
protected	BaseDurationField(DurationFieldType type)

方法概要

限定符和类型	方法和说明
int	compareTo(DurationField otherField)
int	getDifference(long minuendInstant, long subtrahendInstant) Computes the difference between two instants, as measured in the units of this field.
long	getMillis(int value) Get the millisecond duration of this field from its value, which is approximate if this field is imprecise.
long	getMillis(long value) Get the millisecond duration of this field from its value, which is approximate if this field is imprecise.
String	getName() Get the name of the field.
DurationFieldType	getType() Get the type of the field.
int	getValue(long duration) Get the value of this field from the milliseconds, which is approximate if this field is imprecise.
int	getValue(long duration, long instant) Get the value of this field from the milliseconds relative to an instant.
long	getValueAsLong(long duration) Get the value of this field from the milliseconds, which is approximate if this field is imprecise.
boolean	isSupported() Returns true if this field is supported.
String	toString() Get a suitable debug string.

从类继承的方法 com.jn.langx.util.jodatime.DurationField

add, add, getDifferenceAsLong, getMillis, getMillis, getUnitMillis, getValueAsLong, isPrecise, subtract, subtract

从类继承的方法 java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

构造器详细资料

BaseDurationField

protected BaseDurationField(DurationFieldType type)

方法详细资料

getType

public final DurationFieldType getType()

从类复制的说明: DurationField

Get the type of the field.

指定者:

getType 在类中 DurationField

返回:

field type

getName

public final String getName()

从类复制的说明: DurationField

Get the name of the field.

By convention, names are plural.

指定者:

getName 在类中 DurationField

返回:

field name

isSupported

public final boolean isSupported()

从类复制的说明: DurationField

Returns true if this field is supported.

指定者:

isSupported 在类中 DurationField

返回:

true always

getValue

public int getValue(long duration)

Get the value of this field from the milliseconds, which is approximate if this field is imprecise.

指定者:

getValue 在类中 DurationField

参数:

duration - the milliseconds to query, which may be negative

返回:

the value of the field, in the units of the field, which may be negative

getValueAsLong

public long getValueAsLong(long duration)

Get the value of this field from the milliseconds, which is approximate if this field is imprecise.

指定者:

getValueAsLong 在类中 DurationField

参数:

duration - the milliseconds to query, which may be negative

返回:

the value of the field, in the units of the field, which may be negative

getValue

public int getValue(long duration,
                    long instant)

Get the value of this field from the milliseconds relative to an instant.

If the milliseconds is positive, then the instant is treated as a "start instant". If negative, the instant is treated as an "end instant".

The default implementation returns Utils.safeToInt(getAsLong(millisDuration, instant)).

指定者:

getValue 在类中 DurationField

参数:

duration - the milliseconds to query, which may be negative

instant - the start instant to calculate relative to

返回:

the value of the field, in the units of the field, which may be negative

getMillis

public long getMillis(int value)

Get the millisecond duration of this field from its value, which is approximate if this field is imprecise.

指定者:

getMillis 在类中 DurationField

参数:

value - the value of the field, which may be negative

返回:

the milliseconds that the field represents, which may be negative

getMillis

public long getMillis(long value)

Get the millisecond duration of this field from its value, which is approximate if this field is imprecise.

指定者:

getMillis 在类中 DurationField

参数:

value - the value of the field, which may be negative

返回:

the milliseconds that the field represents, which may be negative

getDifference

public int getDifference(long minuendInstant,
                         long subtrahendInstant)

从类复制的说明: DurationField

Computes the difference between two instants, as measured in the units of this field. Any fractional units are dropped from the result. Calling getDifference reverses the effect of calling add. In the following code:

 long instant = ...
 int v = ...
 int age = getDifference(add(instant, v), instant);
 

The value 'age' is the same as the value 'v'.

指定者:

getDifference 在类中 DurationField

参数:

minuendInstant - the milliseconds from 1970-01-01T00:00:00Z to subtract from

subtrahendInstant - the milliseconds from 1970-01-01T00:00:00Z to subtract off the minuend

返回:

the difference in the units of this field

compareTo

public int compareTo(DurationField otherField)

指定者:

compareTo 在接口中 Comparable<DurationField>

toString

public String toString()

Get a suitable debug string.

指定者:

toString 在类中 DurationField

返回:

debug string