org.joda.time.base
Class BasePeriod

java.lang.Object
  org.joda.time.base.AbstractPeriod
      org.joda.time.base.BasePeriod

All Implemented Interfaces:

Serializable, ReadablePeriod

Direct Known Subclasses:

MutablePeriod, Period

public abstract class BasePeriod
extends AbstractPeriod
implements ReadablePeriod, Serializable

BasePeriod is an abstract implementation of ReadablePeriod that stores data in a PeriodType and an int[].

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

BasePeriod subclasses may be mutable and not thread-safe.

Since:

1.0

Author:

Brian S O'Neill, Stephen Colebourne

See Also:

Serialized Form

Constructor Summary

protected	BasePeriod(int[] values, PeriodType type) Constructor used when we trust ourselves.
protected	BasePeriod(int years, int months, int weeks, int days, int hours, int minutes, int seconds, int millis, PeriodType type) Creates a period from a set of field values.
protected	BasePeriod(long duration) Creates a period from the given millisecond duration with the standard period type and ISO rules, ensuring that the calculation is performed with the time-only period type.
protected	BasePeriod(long startInstant, long endInstant, PeriodType type, Chronology chrono) Creates a period from the given interval endpoints.
protected	BasePeriod(long duration, PeriodType type, Chronology chrono) Creates a period from the given millisecond duration, which is only really suitable for durations less than one day.
protected	BasePeriod(Object period, PeriodType type, Chronology chrono) Creates a new period based on another using the ConverterManager.
protected	BasePeriod(ReadableDuration duration, ReadableInstant endInstant, PeriodType type) Creates a period from the given duration and end point.
protected	BasePeriod(ReadableInstant startInstant, ReadableDuration duration, PeriodType type) Creates a period from the given start point and duration.
protected	BasePeriod(ReadableInstant startInstant, ReadableInstant endInstant, PeriodType type) Creates a period from the given interval endpoints.
protected	BasePeriod(ReadablePartial start, ReadablePartial end, PeriodType type) Creates a period from the given duration and end point.

Method Summary

protected void	addField(DurationFieldType field, int value) Adds the value of a field in this period.
protected void	addFieldInto(int[] values, DurationFieldType field, int value) Adds the value of a field in this period.
protected void	addPeriod(ReadablePeriod period) Adds the fields from another period.
protected int[]	addPeriodInto(int[] values, ReadablePeriod period) Adds the fields from another period.
protected PeriodType	checkPeriodType(PeriodType type) Validates a period type, converting nulls to a default value and checking the type is suitable for this instance.
PeriodType	getPeriodType() Gets the period type.
int	getValue(int index) Gets the value at the specified index.
protected void	mergePeriod(ReadablePeriod period) Merges the fields from another period.
protected int[]	mergePeriodInto(int[] values, ReadablePeriod period) Merges the fields from another period.
protected void	setField(DurationFieldType field, int value) Sets the value of a field in this period.
protected void	setFieldInto(int[] values, DurationFieldType field, int value) Sets the value of a field in this period.
protected void	setPeriod(int years, int months, int weeks, int days, int hours, int minutes, int seconds, int millis) Sets the eight standard the fields in one go.
protected void	setPeriod(ReadablePeriod period) Sets all the fields of this period from another.
protected void	setValue(int index, int value) Sets the value of the field at the specified index.
protected void	setValues(int[] values) Sets the values of all fields.
Duration	toDurationFrom(ReadableInstant startInstant) Gets the total millisecond duration of this period relative to a start instant.
Duration	toDurationTo(ReadableInstant endInstant) Gets the total millisecond duration of this period relative to an end instant.

Methods inherited from class org.joda.time.base.AbstractPeriod

equals, get, getFieldType, getFieldTypes, getValues, hashCode, indexOf, isSupported, size, toMutablePeriod, toPeriod, toString, toString

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Methods inherited from interface org.joda.time.ReadablePeriod

equals, get, getFieldType, hashCode, isSupported, size, toMutablePeriod, toPeriod, toString

Constructor Detail

BasePeriod

protected BasePeriod(int years,
                     int months,
                     int weeks,
                     int days,
                     int hours,
                     int minutes,
                     int seconds,
                     int millis,
                     PeriodType type)

Creates a period from a set of field values.

Parameters:

years - amount of years in this period, which must be zero if unsupported

months - amount of months in this period, which must be zero if unsupported

weeks - amount of weeks in this period, which must be zero if unsupported

days - amount of days in this period, which must be zero if unsupported

hours - amount of hours in this period, which must be zero if unsupported

minutes - amount of minutes in this period, which must be zero if unsupported

seconds - amount of seconds in this period, which must be zero if unsupported

millis - amount of milliseconds in this period, which must be zero if unsupported

type - which set of fields this period supports

Throws:

IllegalArgumentException - if period type is invalid

IllegalArgumentException - if an unsupported field's value is non-zero

BasePeriod

protected BasePeriod(long startInstant,
                     long endInstant,
                     PeriodType type,
                     Chronology chrono)

Creates a period from the given interval endpoints.

Parameters:

startInstant - interval start, in milliseconds

endInstant - interval end, in milliseconds

type - which set of fields this period supports, null means standard

chrono - the chronology to use, null means ISO default

Throws:

IllegalArgumentException - if period type is invalid

BasePeriod

protected BasePeriod(ReadableInstant startInstant,
                     ReadableInstant endInstant,
                     PeriodType type)

Creates a period from the given interval endpoints.

Parameters:

startInstant - interval start, null means now

endInstant - interval end, null means now

type - which set of fields this period supports, null means standard

Throws:

IllegalArgumentException - if period type is invalid

BasePeriod

protected BasePeriod(ReadablePartial start,
                     ReadablePartial end,
                     PeriodType type)

Creates a period from the given duration and end point.

The two partials must contain the same fields, thus you can specify two LocalDate objects, or two LocalTime objects, but not one of each. As these are Partial objects, time zones have no effect on the result.

The two partials must also both be contiguous - see DateTimeUtils.isContiguous(ReadablePartial) for a definition. Both LocalDate and LocalTime are contiguous.

Parameters:

start - the start of the period, must not be null

end - the end of the period, must not be null

type - which set of fields this period supports, null means standard

Throws:

IllegalArgumentException - if the partials are null or invalid

Since:

1.1

BasePeriod

protected BasePeriod(ReadableInstant startInstant,
                     ReadableDuration duration,
                     PeriodType type)

Creates a period from the given start point and duration.

Parameters:

startInstant - the interval start, null means now

duration - the duration of the interval, null means zero-length

type - which set of fields this period supports, null means standard

BasePeriod

protected BasePeriod(ReadableDuration duration,
                     ReadableInstant endInstant,
                     PeriodType type)

Creates a period from the given duration and end point.

Parameters:

duration - the duration of the interval, null means zero-length

endInstant - the interval end, null means now

type - which set of fields this period supports, null means standard

BasePeriod

protected BasePeriod(long duration)

Creates a period from the given millisecond duration with the standard period type and ISO rules, ensuring that the calculation is performed with the time-only period type.

The calculation uses the hour, minute, second and millisecond fields.

Parameters:

duration - the duration, in milliseconds

BasePeriod

protected BasePeriod(long duration,
                     PeriodType type,
                     Chronology chrono)

Creates a period from the given millisecond duration, which is only really suitable for durations less than one day.

Only fields that are precise will be used. Thus the largest precise field may have a large value.

Parameters:

duration - the duration, in milliseconds

type - which set of fields this period supports, null means standard

chrono - the chronology to use, null means ISO default

Throws:

IllegalArgumentException - if period type is invalid

BasePeriod

protected BasePeriod(Object period,
                     PeriodType type,
                     Chronology chrono)

Creates a new period based on another using the ConverterManager.

Parameters:

period - the period to convert

type - which set of fields this period supports, null means use type from object

chrono - the chronology to use, null means ISO default

Throws:

IllegalArgumentException - if period is invalid

IllegalArgumentException - if an unsupported field's value is non-zero

BasePeriod

protected BasePeriod(int[] values,
                     PeriodType type)

Constructor used when we trust ourselves. Do not expose publically.

Parameters:

values - the values to use, not null, not cloned

type - which set of fields this period supports, not null

Method Detail

checkPeriodType

protected PeriodType checkPeriodType(PeriodType type)

Validates a period type, converting nulls to a default value and checking the type is suitable for this instance.

Parameters:

type - the type to check, may be null

Returns:

the validated type to use, not null

Throws:

IllegalArgumentException - if the period type is invalid

getPeriodType

public PeriodType getPeriodType()

Gets the period type.

Specified by:

getPeriodType in interface ReadablePeriod

Returns:

the period type

getValue

public int getValue(int index)

Gets the value at the specified index.

Specified by:

getValue in interface ReadablePeriod

Parameters:

index - the index to retrieve

Returns:

the value of the field at the specified index

Throws:

IndexOutOfBoundsException - if the index is invalid

toDurationFrom

public Duration toDurationFrom(ReadableInstant startInstant)

Gets the total millisecond duration of this period relative to a start instant.

This method adds the period to the specified instant in order to calculate the duration.

An instant must be supplied as the duration of a period varies. For example, a period of 1 month could vary between the equivalent of 28 and 31 days in milliseconds due to different length months. Similarly, a day can vary at Daylight Savings cutover, typically between 23 and 25 hours.

Parameters:

startInstant - the instant to add the period to, thus obtaining the duration

Returns:

the total length of the period as a duration relative to the start instant

Throws:

ArithmeticException - if the millis exceeds the capacity of the duration

toDurationTo

public Duration toDurationTo(ReadableInstant endInstant)

Gets the total millisecond duration of this period relative to an end instant.

This method subtracts the period from the specified instant in order to calculate the duration.

An instant must be supplied as the duration of a period varies. For example, a period of 1 month could vary between the equivalent of 28 and 31 days in milliseconds due to different length months. Similarly, a day can vary at Daylight Savings cutover, typically between 23 and 25 hours.

Parameters:

endInstant - the instant to subtract the period from, thus obtaining the duration

Returns:

the total length of the period as a duration relative to the end instant

Throws:

ArithmeticException - if the millis exceeds the capacity of the duration

setPeriod

protected void setPeriod(ReadablePeriod period)

Sets all the fields of this period from another.

Parameters:

period - the period to copy from, not null

Throws:

IllegalArgumentException - if an unsupported field's value is non-zero

setPeriod

protected void setPeriod(int years,
                         int months,
                         int weeks,
                         int days,
                         int hours,
                         int minutes,
                         int seconds,
                         int millis)

Sets the eight standard the fields in one go.

Parameters:

years - amount of years in this period, which must be zero if unsupported

months - amount of months in this period, which must be zero if unsupported

weeks - amount of weeks in this period, which must be zero if unsupported

days - amount of days in this period, which must be zero if unsupported

hours - amount of hours in this period, which must be zero if unsupported

minutes - amount of minutes in this period, which must be zero if unsupported

seconds - amount of seconds in this period, which must be zero if unsupported

millis - amount of milliseconds in this period, which must be zero if unsupported

Throws:

IllegalArgumentException - if an unsupported field's value is non-zero

setField

protected void setField(DurationFieldType field,
                        int value)

Sets the value of a field in this period.

Parameters:

field - the field to set

value - the value to set

Throws:

IllegalArgumentException - if field is is null or not supported.

setFieldInto

protected void setFieldInto(int[] values,
                            DurationFieldType field,
                            int value)

Sets the value of a field in this period.

Parameters:

values - the array of values to update

field - the field to set

value - the value to set

Throws:

IllegalArgumentException - if field is null or not supported.

addField

protected void addField(DurationFieldType field,
                        int value)

Adds the value of a field in this period.

Parameters:

field - the field to set

value - the value to set

Throws:

IllegalArgumentException - if field is is null or not supported.

addFieldInto

protected void addFieldInto(int[] values,
                            DurationFieldType field,
                            int value)

Adds the value of a field in this period.

Parameters:

values - the array of values to update

field - the field to set

value - the value to set

Throws:

IllegalArgumentException - if field is is null or not supported.

mergePeriod

protected void mergePeriod(ReadablePeriod period)

Merges the fields from another period.

Parameters:

period - the period to add from, not null

Throws:

IllegalArgumentException - if an unsupported field's value is non-zero

mergePeriodInto

protected int[] mergePeriodInto(int[] values,
                                ReadablePeriod period)

Merges the fields from another period.

Parameters:

values - the array of values to update

period - the period to add from, not null

Returns:

the updated values

Throws:

IllegalArgumentException - if an unsupported field's value is non-zero

addPeriod

protected void addPeriod(ReadablePeriod period)

Adds the fields from another period.

Parameters:

period - the period to add from, not null

Throws:

IllegalArgumentException - if an unsupported field's value is non-zero

addPeriodInto

protected int[] addPeriodInto(int[] values,
                              ReadablePeriod period)

Adds the fields from another period.

Parameters:

values - the array of values to update

period - the period to add from, not null

Returns:

the updated values

Throws:

IllegalArgumentException - if an unsupported field's value is non-zero

setValue

protected void setValue(int index,
                        int value)

Sets the value of the field at the specified index.

Parameters:

index - the index

value - the value to set

Throws:

IndexOutOfBoundsException - if the index is invalid

setValues

protected void setValues(int[] values)

Sets the values of all fields.

In version 2.0 and later, this method copies the array into the original. This is because the instance variable has been changed to be final to satisfy the Java Memory Model. This only impacts subclasses that are mutable.

Parameters:

values - the array of values