org.joda.time.field
Class MillisDurationField

java.lang.Object
  extended by org.joda.time.DurationField
      extended by org.joda.time.field.MillisDurationField
All Implemented Interfaces:
Serializable, Comparable<DurationField>

public final class MillisDurationField
extends DurationField
implements Serializable

Duration field class representing a field with a fixed unit length of one millisecond.

MillisDurationField is thread-safe and immutable.

Since:
1.0
Author:
Brian S O'Neill
See Also:
Serialized Form

Field Summary
static DurationField INSTANCE
          Singleton instance.
 
Method Summary
 long add(long instant, int value)
          Adds a duration value (which may be negative) to the instant.
 long add(long instant, long value)
          Adds a duration value (which may be negative) to the instant.
 int compareTo(DurationField otherField)
           
 boolean equals(Object obj)
           
 int getDifference(long minuendInstant, long subtrahendInstant)
          Computes the difference between two instants, as measured in the units of this field.
 long getDifferenceAsLong(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(int value, long instant)
          Get the millisecond duration of this field from its value relative to an instant.
 long getMillis(long value)
          Get the millisecond duration of this field from its value, which is approximate if this field is imprecise.
 long getMillis(long value, long instant)
          Get the millisecond duration of this field from its value relative to an instant.
 String getName()
          Get the name of the field.
 DurationFieldType getType()
          Get the type of the field.
 long getUnitMillis()
          Returns the amount of milliseconds per unit value of this 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.
 long getValueAsLong(long duration, long instant)
          Get the value of this field from the milliseconds relative to an instant.
 int hashCode()
           
 boolean isPrecise()
          Returns true as this field is precise.
 boolean isSupported()
          Returns true as this field is supported.
 String toString()
          Get a suitable debug string.
 
Methods inherited from class org.joda.time.DurationField
subtract, subtract
 
Methods inherited from class java.lang.Object
clone, finalize, getClass, notify, notifyAll, wait, wait, wait
 

Field Detail

INSTANCE

public static final DurationField INSTANCE
Singleton instance.

Method Detail

getType

public DurationFieldType getType()
Description copied from class: DurationField
Get the type of the field.

Specified by:
getType in class DurationField
Returns:
field type

getName

public String getName()
Description copied from class: DurationField
Get the name of the field.

By convention, names are plural.

Specified by:
getName in class DurationField
Returns:
field name

isSupported

public boolean isSupported()
Returns true as this field is supported.

Specified by:
isSupported in class DurationField
Returns:
true always

isPrecise

public final boolean isPrecise()
Returns true as this field is precise.

Specified by:
isPrecise in class DurationField
Returns:
true always
See Also:
DurationField.getUnitMillis()

getUnitMillis

public final long getUnitMillis()
Returns the amount of milliseconds per unit value of this field.

Specified by:
getUnitMillis in class DurationField
Returns:
one always
See Also:
DurationField.isPrecise()

getValue

public int getValue(long duration)
Description copied from class: DurationField
Get the value of this field from the milliseconds, which is approximate if this field is imprecise.

Specified by:
getValue in class DurationField
Parameters:
duration - the milliseconds to query, which may be negative
Returns:
the value of the field, in the units of the field, which may be negative

getValueAsLong

public long getValueAsLong(long duration)
Description copied from class: DurationField
Get the value of this field from the milliseconds, which is approximate if this field is imprecise.

Specified by:
getValueAsLong in class DurationField
Parameters:
duration - the milliseconds to query, which may be negative
Returns:
the value of the field, in the units of the field, which may be negative

getValue

public int getValue(long duration,
                    long instant)
Description copied from class: DurationField
Get the value of this field from the milliseconds relative to an instant. For precise fields this method produces the same result as for the single argument get method.

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

Specified by:
getValue in class DurationField
Parameters:
duration - the milliseconds to query, which may be negative
instant - the start instant to calculate relative to
Returns:
the value of the field, in the units of the field, which may be negative

getValueAsLong

public long getValueAsLong(long duration,
                           long instant)
Description copied from class: DurationField
Get the value of this field from the milliseconds relative to an instant. For precise fields this method produces the same result as for the single argument get method.

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

Specified by:
getValueAsLong in class DurationField
Parameters:
duration - the milliseconds to query, which may be negative
instant - the start instant to calculate relative to
Returns:
the value of the field, in the units of the field, which may be negative

getMillis

public long getMillis(int value)
Description copied from class: DurationField
Get the millisecond duration of this field from its value, which is approximate if this field is imprecise.

Specified by:
getMillis in class DurationField
Parameters:
value - the value of the field, which may be negative
Returns:
the milliseconds that the field represents, which may be negative

getMillis

public long getMillis(long value)
Description copied from class: DurationField
Get the millisecond duration of this field from its value, which is approximate if this field is imprecise.

Specified by:
getMillis in class DurationField
Parameters:
value - the value of the field, which may be negative
Returns:
the milliseconds that the field represents, which may be negative

getMillis

public long getMillis(int value,
                      long instant)
Description copied from class: DurationField
Get the millisecond duration of this field from its value relative to an instant. For precise fields this method produces the same result as for the single argument getMillis method.

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

Specified by:
getMillis in class DurationField
Parameters:
value - the value of the field, which may be negative
instant - the instant to calculate relative to
Returns:
the millisecond duration that the field represents, which may be negative

getMillis

public long getMillis(long value,
                      long instant)
Description copied from class: DurationField
Get the millisecond duration of this field from its value relative to an instant. For precise fields this method produces the same result as for the single argument getMillis method.

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

Specified by:
getMillis in class DurationField
Parameters:
value - the value of the field, which may be negative
instant - the instant to calculate relative to
Returns:
the millisecond duration that the field represents, which may be negative

add

public long add(long instant,
                int value)
Description copied from class: DurationField
Adds a duration value (which may be negative) to the instant.

Specified by:
add in class DurationField
Parameters:
instant - the milliseconds from 1970-01-01T00:00:00Z to add to
value - the value to add, in the units of the field
Returns:
the updated milliseconds

add

public long add(long instant,
                long value)
Description copied from class: DurationField
Adds a duration value (which may be negative) to the instant.

Specified by:
add in class DurationField
Parameters:
instant - the milliseconds from 1970-01-01T00:00:00Z to add to
value - the value to add, in the units of the field
Returns:
the updated milliseconds

getDifference

public int getDifference(long minuendInstant,
                         long subtrahendInstant)
Description copied from class: 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'.

Specified by:
getDifference in class DurationField
Parameters:
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
Returns:
the difference in the units of this field

getDifferenceAsLong

public long getDifferenceAsLong(long minuendInstant,
                                long subtrahendInstant)
Description copied from class: 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 = ...
 long v = ...
 long age = getDifferenceAsLong(add(instant, v), instant);
 
The value 'age' is the same as the value 'v'.

Specified by:
getDifferenceAsLong in class DurationField
Parameters:
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
Returns:
the difference in the units of this field

compareTo

public int compareTo(DurationField otherField)
Specified by:
compareTo in interface Comparable<DurationField>

equals

public boolean equals(Object obj)
Overrides:
equals in class Object

hashCode

public int hashCode()
Overrides:
hashCode in class Object

toString

public String toString()
Get a suitable debug string.

Specified by:
toString in class DurationField
Returns:
debug string


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