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OSID Specifications
calendaring package
Version 3.1.0
Interfaceosid.calendaring.DateTime
Implementsosid.OsidPrimitive
Used Byosid.Metadata
osid.OsidCompendium
osid.OsidProfile
osid.OsidRequest
osid.Temporal
osid.assessment.AssessmentOffered
osid.assessment.AssessmentTaken
osid.billing.Period
osid.billing.payment.Payer
osid.billing.payment.Payment
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osid.billing.payment.Summary
osid.blogging.Entry
osid.calendaring.DateTimeInterval
osid.calendaring.DateTimeList
osid.calendaring.MeetingTime
osid.calendaring.OffsetEvent
osid.calendaring.Schedule
osid.calendaring.SupersedingEvent
osid.calendaring.TimePeriod
osid.checklist.Todo
osid.configuration.Value
osid.course.Term
osid.course.chronicle.AssessmentEntry
osid.course.chronicle.AwardEntry
osid.course.chronicle.CourseEntry
osid.course.chronicle.CredentialEntry
osid.course.chronicle.ProgramEntry
osid.filing.DirectoryEntry
osid.financials.FiscalPeriod
osid.financials.posting.Post
osid.forum.Post
osid.forum.Reply
osid.grading.GradeEntry
osid.installation.Installation
osid.installation.InstallationPackage
osid.inventory.Inventory
osid.inventory.shipment.Shipment
osid.journaling.JournalEntry
osid.locale.CalendarConversionSession
osid.locale.CalendarFormattingSession
osid.locale.CalendarInfo
osid.logging.LogEntry
osid.mapping.route.RouteProgress
osid.messaging.Message
osid.messaging.Receipt
osid.ordering.Order
osid.personnel.Person
osid.provisioning.Provision
osid.provisioning.ProvisionReturn
osid.provisioning.Request
osid.provisioning.RequestTransaction
osid.recognition.Convocation
osid.repository.Asset
osid.resourcing.Work
osid.rules.check.Check
osid.search.terms.DateTimeRangeTerm
osid.search.terms.DateTimeTerm
osid.tracking.Issue
osid.tracking.LogEntry
osid.workflow.event.WorkflowEvent
Description

The DateTime interface defines a date and/or time. This interface provides a very broad range of dates, describes more or less precision, and/or conveys an uncertainty. A number of convenience methods for retrieving time elements are available but only those methods covered by the specified granularity are valid.

A typical example is describing a day where the time isn't known, and the event did not occur at midnight.

getMillennium() == 2
getCentury() == 18
getYear() == 1776
getMonth() == 7
getDay() == 4
getHour() == 0
getGranularity() == DateTimeResolution.DAY
definesUncertainty() == false
                

Another example showing that the time is probably 1pm but could have been as late as 3pm or early as noon.

getMillennium() == 3
getCentury() == 21
getYear() == 2008
getMonth() == 3
getDay() == 17
getHour() == 13
getMinute() == 0
getGranularity() == TimeResolution.MINUTE
definesUncertainty() == true
getUncertaintyGranularity() == DateTimeResolution.HOUR
getUncertaintyMinus() == 1
getUncertaintyPlus == 2
                

An example marking the birth of the universe. 13.73 billion years +/- 120 million years. The granularity suggests that no more resolution than one million years can be inferred from the "clock", making errors in the exact number of millennia insignificant.

getEpoch() == -13,730
getMillennium() == 0
getCentury() == 0
getYear() == 0
getGranularity() == TimeResolution.EPOCH
definesUncertainty() == true
getUncertaintyGranularity() == DateTimeResolution.EPOCH
getUncertaintyMinus() == 120
getUncertaintyPlus == 120
                
MethodgetCalendarType
Description

Gets the calendar type.

Returnosid.type.Type the calendar type
Compliancemandatory This method must be implemented.
MethodgetAeon
Description

Gets the aeon starting from 1. An aeon is 1B years.

Returninteger the aeon
Compliancemandatory This method must be implemented.
MethodgetEpoch
Description

Gets the epoch starting from 1. An epoch is 1M years.

Returninteger the eposh
Compliancemandatory This method must be implemented.
MethodgetMillennium
Description

Gets the millennium starting from 1. A millenium is 1,000 years.

Returninteger the millennium
Compliancemandatory This method must be implemented.
MethodgetCentury
Description

Gets the century starting from 1.

Returninteger the century
Compliancemandatory This method must be implemented.
MethodgetYear
Description

Gets the year starting from 1.

Returninteger the year
Compliancemandatory This method must be implemented.
MethodgetMonth
Description

Gets the month number starting from 1.

Returncardinal the month
Compliancemandatory This method must be implemented.
MethodgetDay
Description

Gets the day of the month starting from 1.

Returncardinal the day of the month
Compliancemandatory This method must be implemented.
MethodgetTimeType
Description

Gets the time type.

Returnosid.type.Type the time type
Compliancemandatory This method must be implemented.
MethodgetHour
Description

Gets the hour of the day 0-23.

Returncardinal the hour of the day
Compliancemandatory This method must be implemented.
MethodgetMinute
Description

Gets the minute of the hour 0-59.

Returncardinal the minute of the hour
Compliancemandatory This method must be implemented.
MethodgetSecond
Description

Gets the second of the minute 0-59.

Returncardinal the second of the minute
Compliancemandatory This method must be implemented.
MethodgetMilliseconds
Description

Gets the number of milliseconds in this second 0-999. A millisecond is one thousandth of a second.

Returncardinal the milliseconds of the second
Compliancemandatory This method must be implemented.
MethodgetMicroseconds
Description

Gets the number of microseconds of the second 0-999. A microsecond is one millionth of a second.

Returncardinal the micrseconds of the millisecond
Compliancemandatory This method must be implemented.
MethodgetNanoseconds
Description

Gets the number of nanoseconds of the microsecond 0-999. A nanosecond is one billionth of a second.

Returncardinal the nanoseconds of the microsecond
Compliancemandatory This method must be implemented.
MethodgetPicoseconds
Description

Gets the number of picoseconds of the nanosecond 0-999. A picosecond is one trillionth of a second.

Returncardinal the picoseconds of the nanosecond
Compliancemandatory This method must be implemented.
MethodgetFemtoseconds
Description

Gets the number of femtoseconds of the picosecond 0-999. A femtosecond is one quadrillionth of a second.

Returncardinal the femtoseconds of the picosecond
Compliancemandatory This method must be implemented.
MethodgetAttoseconds
Description

Gets the number of attoseconds of the femtoseconds 0-999. An attosecond is one quintillionth of a second.

Returncardinal the attoseconds of the femtosecond
Compliancemandatory This method must be implemented.
MethodgetZeptoseconds
Description

Gets the number of zeptoseconds of the attosecond 0-999. A zeptosecond is one sextillionth of a second.

Returncardinal the zeptoseconds of the attosecond
Compliancemandatory This method must be implemented.
MethodgetYoctoseconds
Description

Gets the number of yoctoseconds of the picosecond 0-999. A yoctosecond is one septillionth of a second. This is getting quite small.

Returncardinal the yoctoseconds of the picosecond
Compliancemandatory This method must be implemented.
MethodgetXoxxoseconds
Description

Gets the number of xoxxoseconds of the yoctosecond 0-999. A xoxxosecond is one octillionth of a second. We're going with Rudy Rucker here.

Returncardinal the xoxxoseconds of the yoctosecond
Compliancemandatory This method must be implemented.
MethodgetWeebleseconds
Description

Gets the number of weebleseconds of the xoxxosecond 0-999. A weeblesecond is one nonillionth of a second.

Returncardinal the weebleseconds of the xoxxoseconds
Compliancemandatory This method must be implemented.
MethodgetVatoseconds
Description

Gets the number of vatoseconds of the xoxxosecond 0-999. A vatosecond is one decillionth of a second.

Returncardinal the vatoseconds of the weeblesecond
Compliancemandatory This method must be implemented.
MethodgetUndaseconds
Description

Gets the number of undaseconds of the vatosecond 0-999. An undasecond is one unadecillionth of a second.

Returncardinal the undaseconds of the vatosecond
Compliancemandatory This method must be implemented.
MethodgetPlanckSeconds
Description

Gets the number of Plancks of the vatoseconds. A Planck is 10 quattuordecillionths of a second.

Returncardinal the plancks of the undasecond
Compliancemandatory This method must be implemented.
MethodgetGranularity
Description

Gets the granularity of this time. The granularity indicates the resolution of the clock. More precision than what is specified in this method cannot be inferred from the available data.

Returnosid.calendaring.DateTimeResolution granularity
Compliancemandatory This method must be implemented.
MethodgetGranularityMultiplier
Description

If the granularity of the time equals getGranularity(), then the multiplier is 1. This method may return a different number when the granularity differs from one of the defined resolutions.

Returncardinal granularity multiplier
Compliancemandatory This method must be implemented.
MethoddefinesUncertainty
Description

Tests if uncertainty is defined for this time.

Returnboolean true if uncertainty is defined, false otherwise
Compliancemandatory This method must be implemented.
MethodgetUncertaintyUnits
Description

Gets the units of the uncertainty.

Returnosid.calendaring.DateTimeResolution units of the uncertainty
ErrorsILLEGAL_STATE definesUncertainty() is false
Compliancemandatory This method must be implemented.
MethodgetUncertaintyMinus
Description

Gets the uncertainty of this time in the negative direction.

Returncardinal the uncertainty under this value
ErrorsILLEGAL_STATE definesUncertainty() is false
Compliancemandatory This method must be implemented.
MethodgetUncertaintyPlus
Description

Gets the uncertainty of this time in the positive direction.

Returncardinal the uncertainty over this value
ErrorsILLEGAL_STATE definesUncertainty() is false
Compliancemandatory This method must be implemented.
MethodisUncertaintyDateInclusive
Description

Tests if the uncertainty is inclusive of all dates. An inclusive uncertainty includes the entire range specified by the uncertainty units e.g. +/- 1 year includes all of the months and days within that interval. A non-inclusive uncertainty would mean the year is uncertain but the month and day is certain.

Returnboolean true if the uncertainty includes all dates, false otherwise
ErrorsILLEGAL_STATE definesUncertainty() is false
Compliancemandatory This method must be implemented.
MethodisUncertaintyTimeInclusive
Description

Tests if the uncertainty is time inclusive. An inclusive uncertainty includes the entire range specified by the uncertainty units e.g. +/- 1 year includes all of the seconds within that interval. A non-inclusive uncertainty would mean the year is uncertain but the time is certain.

Returnboolean true if the uncertainty includes all times, false otherwise
ErrorsILLEGAL_STATE definesUncertainty() is false
Compliancemandatory This method must be implemented.