Package org.joda.time.field

Class DelegatedDurationField

  • All Implemented Interfaces:
    java.io.Serializable, java.lang.Comparable<DurationField>
    public class DelegatedDurationField
extends DurationField
implements java.io.Serializable
    DelegatedDurationField delegates each method call to the duration field it wraps.

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

    Since:
    1.0
    See Also:
    DecoratedDurationField, Serialized Form

    • Method Summary

      All Methods Instance Methods Concrete Methods 
      Modifier and Type Method Description
      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 durationField)  
      boolean equals​(java.lang.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.
      java.lang.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.
      DurationField getWrappedField()
      Gets the wrapped duration field.
      int hashCode()  
      boolean isPrecise()
      Is this field precise.
      boolean isSupported()
      Returns true if this field is supported.
      java.lang.String toString()
      Get a suitable debug string.

      • Methods inherited from class java.lang.Object

        getClass, notify, notifyAll, wait, wait, wait

    • Method Detail

      • getWrappedField

        public final DurationField getWrappedField()
        Gets the wrapped duration field.
        Returns:
        the wrapped DurationField

      • getName

        public java.lang.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 if this field is supported.
        Specified by:
        isSupported in class DurationField
        Returns:
        true if this field is supported

      • isPrecise

        public boolean isPrecise()
        Description copied from class: DurationField
        Is this field precise. A precise field can calculate its value from milliseconds without needing a reference date. Put another way, a precise field's unit size is not variable.
        Specified by:
        isPrecise in class DurationField
        Returns:
        true if precise
        See Also:
        DurationField.getUnitMillis()

      • 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

      • getUnitMillis

        public long getUnitMillis()
        Description copied from class: DurationField
        Returns the amount of milliseconds per unit value of this field. For example, if this field represents "seconds", then this returns the milliseconds in one second.

        For imprecise fields, the unit size is variable, and so this method returns a suitable average value.

        Specified by:
        getUnitMillis in class DurationField
        Returns:
        the unit size of this field, in milliseconds
        See Also:
        DurationField.isPrecise()

      • compareTo

        public int compareTo​(DurationField durationField)
        Specified by:
        compareTo in interface java.lang.Comparable<DurationField>

      • equals

        public boolean equals​(java.lang.Object obj)
        Overrides:
        equals in class java.lang.Object

      • hashCode

        public int hashCode()
        Overrides:
        hashCode in class java.lang.Object

      • toString

        public java.lang.String toString()
        Description copied from class: DurationField
        Get a suitable debug string.
        Specified by:
        toString in class DurationField
        Returns:
        debug string