OSID - osid.Metadata Service Interface Definition

Interface	osid.Metadata
Used By	`osid.OsidCompendiumForm`
	`osid.OsidContainableForm`
	`osid.OsidEffectuatorForm`
	`osid.OsidEnablerForm`
	`osid.OsidForm`
	`osid.OsidObjectForm`
	`osid.OsidOperableForm`
	`osid.OsidRelationshipForm`
	`osid.OsidRequestForm`
	`osid.OsidRuleApplicatorForm`
	show 226 more…
`osid.OsidRuleForm`
`osid.OsidSourceableForm`
`osid.OsidTemporalForm`
`osid.acknowledgement.batch.BillingBatchForm`
`osid.assessment.AssessmentForm`
`osid.assessment.AssessmentOfferedForm`
`osid.assessment.AssessmentTakenForm`
`osid.assessment.ItemForm`
`osid.assessment.authoring.AssessmentPartForm`
`osid.assessment.authoring.SequenceRuleForm`
`osid.assessment.batch.BankBatchForm`
`osid.authentication.batch.AgencyBatchForm`
`osid.authorization.FunctionForm`
`osid.authorization.batch.QualifierBatchForm`
`osid.authorization.batch.VaultBatchForm`
`osid.bidding.AuctionForm`
`osid.bidding.BidForm`
`osid.bidding.batch.AuctionHouseBatchForm`
`osid.billing.CustomerForm`
`osid.billing.EntryForm`
`osid.billing.ItemForm`
`osid.billing.PeriodForm`
`osid.billing.batch.BusinessBatchForm`
`osid.billing.payment.PayerForm`
`osid.billing.payment.PaymentForm`
`osid.blogging.EntryForm`
`osid.blogging.batch.BlogBatchForm`
`osid.calendaring.EventForm`
`osid.calendaring.OffsetEventForm`
`osid.calendaring.RecurringEventForm`
`osid.calendaring.ScheduleForm`
`osid.calendaring.ScheduleSlotForm`
`osid.calendaring.SupersedingEventForm`
`osid.calendaring.TimePeriodForm`
`osid.calendaring.batch.CalendarBatchForm`
`osid.checklist.TodoForm`
`osid.checklist.batch.ChecklistBatchForm`
`osid.checklist.batch.TodoBatchForm`
`osid.checklist.mason.TodoProducerForm`
`osid.commenting.CommentForm`
`osid.commenting.batch.BookBatchForm`
`osid.communication.ResponseForm`
`osid.configuration.ConfigurationForm`
`osid.configuration.ParameterForm`
`osid.configuration.ValueForm`
`osid.configuration.batch.ConfigurationBatchForm`
`osid.contact.AddressForm`
`osid.contact.ContactForm`
`osid.contact.batch.AddressBookBatchForm`
`osid.control.ActionForm`
`osid.control.ControllerForm`
`osid.control.SceneForm`
`osid.control.SettingForm`
`osid.control.TriggerForm`
`osid.course.ActivityForm`
`osid.course.ActivityUnitForm`
`osid.course.CourseForm`
`osid.course.CourseOfferingForm`
`osid.course.TermForm`
`osid.course.batch.CourseCatalogBatchForm`
`osid.course.batch.TermBatchForm`
`osid.course.chronicle.AssessmentEntryForm`
`osid.course.chronicle.AwardEntryForm`
`osid.course.chronicle.CourseEntryForm`
`osid.course.chronicle.CredentialEntryForm`
`osid.course.chronicle.ProgramEntryForm`
`osid.course.plan.LessonForm`
`osid.course.plan.PlanForm`
`osid.course.program.CredentialForm`
`osid.course.program.EnrollmentForm`
`osid.course.program.ProgramForm`
`osid.course.program.ProgramOfferingForm`
`osid.course.registration.RegistrationForm`
`osid.course.registration.RegistrationTargetForm`
`osid.course.registration.request.RegistrationRequestItemForm`
`osid.course.requisite.AssessmentRequirementForm`
`osid.course.requisite.AwardRequirementForm`
`osid.course.requisite.CourseRequirementForm`
`osid.course.requisite.CredentialRequirementForm`
`osid.course.requisite.LearningObjectiveRequirementForm`
`osid.course.requisite.ProgramRequirementForm`
`osid.course.syllabus.DocetForm`
`osid.dictionary.EntryForm`
`osid.dictionary.batch.DictionaryBatchForm`
`osid.filing.DirectoryEntryForm`
`osid.filing.allocation.AllocationForm`
`osid.financials.AccountForm`
`osid.financials.ActivityForm`
`osid.financials.FiscalPeriodForm`
`osid.financials.batch.AccountBatchForm`
`osid.financials.batch.ActivityBatchForm`
`osid.financials.batch.BusinessBatchForm`
`osid.financials.budgeting.BudgetEntryForm`
`osid.financials.posting.PostEntryForm`
`osid.financials.posting.PostForm`
`osid.forum.PostForm`
`osid.forum.ReplyForm`
`osid.forum.batch.ForumBatchForm`
`osid.grading.GradeEntryForm`
`osid.grading.GradeForm`
`osid.grading.GradeSystemForm`
`osid.grading.GradebookColumnForm`
`osid.grading.batch.GradebookBatchForm`
`osid.grading.calculation.GradebookColumnCalculationForm`
`osid.grading.transform.GradeSystemTransformForm`
`osid.hold.BlockForm`
`osid.hold.batch.OublietteBatchForm`
`osid.id.IdForm`
`osid.inquiry.InquiryForm`
`osid.inquiry.ResponseForm`
`osid.inquiry.batch.InquestBatchForm`
`osid.installation.InstallationContentForm`
`osid.installation.InstallationPackageForm`
`osid.installation.batch.DepotBatchForm`
`osid.inventory.InventoryForm`
`osid.inventory.ItemForm`
`osid.inventory.ModelForm`
`osid.inventory.StockForm`
`osid.inventory.batch.InventoryBatchForm`
`osid.inventory.shipment.EntryForm`
`osid.inventory.shipment.ShipmentForm`
`osid.journaling.batch.JournalBatchForm`
`osid.learning.ActivityForm`
`osid.learning.ObjectiveForm`
`osid.learning.ProficiencyForm`
`osid.learning.batch.ObjectiveBankBatchForm`
`osid.learning.batch.ObjectiveBatchForm`
`osid.lexicon.IdiomForm`
`osid.lexicon.ParameterForm`
`osid.lexicon.batch.PressBatchForm`
`osid.logging.LogEntryForm`
`osid.logging.batch.LogBatchForm`
`osid.mapping.LocationForm`
`osid.mapping.batch.LocationBatchForm`
`osid.mapping.batch.MapBatchForm`
`osid.mapping.path.ObstacleForm`
`osid.mapping.path.SignalForm`
`osid.mapping.path.SpeedZoneForm`
`osid.mapping.route.RouteSegmentForm`
`osid.messaging.MessageForm`
`osid.messaging.batch.MailboxBatchForm`
`osid.metering.batch.UtilityBatchForm`
`osid.offering.CanonicalUnitForm`
`osid.offering.OfferingForm`
`osid.offering.ParticipantForm`
`osid.offering.ResultForm`
`osid.offering.batch.CatalogueBatchForm`
`osid.offering.rules.OfferingConstrainerForm`
`osid.ontology.SubjectForm`
`osid.ontology.batch.OntologyBatchForm`
`osid.ontology.batch.SubjectBatchForm`
`osid.ordering.ItemForm`
`osid.ordering.OrderForm`
`osid.ordering.PriceForm`
`osid.ordering.ProductForm`
`osid.ordering.batch.StoreBatchForm`
`osid.ordering.rules.PriceEnablerForm`
`osid.personnel.AppointmentForm`
`osid.personnel.OrganizationForm`
`osid.personnel.PersonForm`
`osid.personnel.PositionForm`
`osid.personnel.batch.OrganizationBatchForm`
`osid.personnel.batch.RealmBatchForm`
`osid.profile.batch.ProfileBatchForm`
`osid.provisioning.BrokerForm`
`osid.provisioning.PoolForm`
`osid.provisioning.ProvisionForm`
`osid.provisioning.QueueForm`
`osid.provisioning.RequestForm`
`osid.provisioning.RequestTransactionForm`
`osid.provisioning.batch.DistributorBatchForm`
`osid.provisioning.rules.BrokerProcessorForm`
`osid.provisioning.rules.PoolProcessorForm`
`osid.provisioning.rules.QueueConstrainerForm`
`osid.provisioning.rules.QueueProcessorForm`
`osid.recipe.DirectionForm`
`osid.recipe.IngredientForm`
`osid.recipe.RecipeForm`
`osid.recipe.batch.CookbookBatchForm`
`osid.recognition.ConferralForm`
`osid.recognition.ConvocationForm`
`osid.recognition.batch.AcademyBatchForm`
`osid.relationship.batch.FamilyBatchForm`
`osid.repository.AssetContentForm`
`osid.repository.AssetForm`
`osid.repository.batch.CompositionBatchForm`
`osid.repository.batch.RepositoryBatchForm`
`osid.resource.ResourceForm`
`osid.resource.batch.BinBatchForm`
`osid.resource.batch.ResourceBatchForm`
`osid.resource.demographic.DemographicForm`
`osid.resourcing.AvailabilityForm`
`osid.resourcing.CommissionForm`
`osid.resourcing.EffortForm`
`osid.resourcing.JobForm`
`osid.resourcing.WorkForm`
`osid.resourcing.batch.FoundryBatchForm`
`osid.room.BuildingForm`
`osid.room.FloorForm`
`osid.room.RoomForm`
`osid.room.batch.CampusBatchForm`
`osid.room.construction.ProjectForm`
`osid.room.construction.RenovationForm`
`osid.rules.check.CheckForm`
`osid.rules.check.InstructionForm`
`osid.sequencing.ChainForm`
`osid.subscription.DispatchForm`
`osid.subscription.SubscriptionForm`
`osid.subscription.batch.PublisherBatchForm`
`osid.topology.EdgeForm`
`osid.topology.batch.GraphBatchForm`
`osid.tracking.IssueForm`
`osid.tracking.LogEntryForm`
`osid.tracking.QueueForm`
`osid.tracking.batch.FrontOfficeBatchForm`
`osid.type.TypeForm`
`osid.voting.BallotForm`
`osid.voting.CandidateForm`
`osid.voting.VoteForm`
`osid.voting.VoterAllocationForm`
`osid.voting.batch.PollsBatchForm`
`osid.voting.rules.RaceProcessorForm`
`osid.workflow.ProcessForm`
`osid.workflow.StepForm`
`osid.workflow.batch.OfficeBatchForm`
`osid.workflow.event.WorkflowEventForm`
Description	The `Metadata` interface defines a set of methods describing a the syntax and rules for creating and updating a data element inside an `OsidForm`. `Metadata` provides the means to retrieve restrictions placed upon data elements such as sizes and ranges and help guide user input. Example: getElementLabel() = "primary color" // input label getInstructions() = "Supply a primary color, I really need one." getSyntax() = DISPLAYTEXT isArray() = false // single value allowed isRequired() = true // not optional isReadOnly() = false // element can be updated isLinked() = false // no side effects isValueKnown() = true // known that no value exists hasSuppliedValue() = false // no value exists getMinimumElements() = 1 // must have at least one value getMaximumElements() = 1 // no more than one value isEnumerated() = true // value must be one of an enumerated set getDisplayTextLanguageTypes() = { EN/US } getDisplayTextScriptTypes() = { LATN } getDisplayTextFormatTypes() = { plain } isMultilineDisplayText() = false // value must be on a single line getMinimumStringLength() = 3 // no fewer than three characters getMaximumStringLength() = 6 // no more than 6 characters getStringMatchTypes() = {} getDisplayTextSet() = { "red", "yellow", "blue" } // enumerated list getDefaultDisplayTextValues() = {} // no defaulting available An application may display a one-line text input box sized up to 6 characters in English or it may display a drop-down menu with the enumerated values or it may use a radio box to select from the enumeration. Following a create transaction, the `Metadata` for update now has: isValueKnown() = true // known that a value exists hasSuppliedValue() = true // a value exists getExistingDisplayTextValues() = { "red" } // existing value
Method	getElementId
Description	Gets a unique `Id` for the data element.
Return	`osid.id.Id`		an `Id`
Compliance	`mandatory`		This method must be implemented.
Method	getElementLabel
Description	Gets a display label for the data element.
Return	`osid.locale.DisplayText`		a display label
Compliance	`mandatory`		This method must be implemented.
Method	getInstructions
Description	Gets instructions for updating this element value. This is a human readable description of the data element or property that may include special instructions or caveats to the end-user above and beyond what this interface provides.
Return	`osid.locale.DisplayText`		instructions
Compliance	`mandatory`		This method must be implemented.
Method	getSyntax
Description	Gets the syntax of this data.
Return	`osid.Syntax`		an enumeration indicating the type of value
Compliance	`mandatory`		This method must be implemented.
Method	isArray
Description	Tests if this data element is an array.
Return	`boolean`		`true` if this data is an array, `false` if a single element
Compliance	`mandatory`		This method must be implemented.
Method	isRequired
Description	Tests if this data element is required to be supplied when creating new objects and cannot be cleared when updating objects. Elements that implement a fallback to default values are not required in this sense.
Return	`boolean`		`true` if this element value is required, `false` otherwise
Compliance	`mandatory`		This method must be implemented.
Method	isReadOnly
Description	Tests if this data can be updated. This may indicate the result of a pre-authorization but is not a guarantee that an authorization failure will not occur when the create or update transaction is issued.
Return	`boolean`		`true` if this data is not updatable, `false` otherwise
Compliance	`mandatory`		This method must be implemented.
Method	isLinked
Description	Tests if this data element is linked to other data in the object. Updating linked data elements should refresh all metadata and revalidate object elements.
Return	`boolean`		true if this element is linked, false if updates have no side effect
Compliance	`mandatory`		This method must be implemented.
Method	isValueKnown
Description	Tests if an existing value is known for this data element. If it is known that a value does not exist, then this method returns `true`.
Return	`boolean`		`true` if the element value is known, `false` if the element value is not known
Compliance	`mandatory`		This method must be implemented.
Method	hasValue
Description	Tests if this data element has a value.
Return	`boolean`		`true` if this element has a value, `false` otherwise
Errors	ILLEGAL_STATE		`isValueKnown()` is `false`
Compliance	`mandatory`		This method must be implemented.
Method	getUnits
Description	Gets the units of this data for display purposes ('lbs', 'gills', 'furlongs').
Return	`osid.locale.DisplayText`		the display units of this data or an empty string if not applicable
Compliance	`mandatory`		This method must be implemented.
Method	getMinimumElements
Description	In the case where an array or list of elements is specified in an `OsidForm`, this specifies the minimum number of elements that must be included.
Return	`cardinal`		the minimum elements or `1` if `isArray()` is `false`
Compliance	`mandatory`		This method must be implemented.
Method	getMaximumElements
Description	In the case where an array or list of elements is specified in an `OsidForm`, this specifies the maximum number of elements that can be specified.
Return	`cardinal`		the maximum elements or `1` if `isArray()` is `false`
Compliance	`mandatory`		This method must be implemented.
Method	getMinimumCardinal
Description	Gets the minimum cardinal value.
Return	`cardinal`		the minimum cardinal
Errors	ILLEGAL_STATE		syntax is not a `CARDINAL`
Compliance	`mandatory`		This method must be implemented.
Method	getMaximumCardinal
Description	Gets the maximum cardinal value.
Return	`cardinal`		the maximum cardinal
Errors	ILLEGAL_STATE		syntax is not a `CARDINAL`
Compliance	`mandatory`		This method must be implemented.
Method	getCardinalSet
Description	Gets the set of acceptable cardinal values.
Return	`cardinal[]`		a set of cardinals or an empty array if not restricted
Errors	ILLEGAL_STATE		syntax is not a `CARDINAL` or `isEnumerated()` is `false`
Compliance	`mandatory`		This method must be implemented.
Method	getDefaultCardinalValues
Description	Gets the default cardinal values. These are the values used if the element value is not provided or is cleared. If `isArray()` is false, then this method returns at most a single value.
Return	`cardinal[]`		the default cardinal values
Errors	ILLEGAL_STATE		syntax is not a `CARDINAL`
Compliance	`mandatory`		This method must be implemented.
Method	getExistingCardinalValues
Description	Gets the existing cardinal values. If `hasSuppliedValue()` is `false`, then these values are the default values. If `isArray()` is `false` and `hasValidValue()` is `true`, then this method returns at most a single value.
Return	`cardinal[]`		the existing cardinal values
Errors	ILLEGAL_STATE		syntax is not a `CARDINAL` or `isValueKnown()` is `false`
Compliance	`mandatory`		This method must be implemented.
Method	getCoordinateTypes
Description	Gets the set of acceptable coordinate types.
Return	`osid.type.Type[]`		the set of coordinate types
Errors	ILLEGAL_STATE		syntax is not a `COORDINATE or SPATIALUNIT`
Compliance	`mandatory`		This method must be implemented.
Method	supportsCoordinateType
Description	Tests if the given coordinate type is supported.
Parameters	`osid.type.Type`	`coordinateType`	a coordinate Type
Return	`boolean`		`true` if the type is supported, `false` otherwise
Errors	ILLEGAL_STATE		syntax is not a `COORDINATE`
Errors	NULL_ARGUMENT		`coordinateType` is `null`
Compliance	`mandatory`		This method must be implemented.
Method	getAxesForCoordinateType
Description	Gets the number of axes for a given supported coordinate type.
Parameters	`osid.type.Type`	`coordinateType`	a coordinate Type
Return	`cardinal`		the number of axes
Errors	ILLEGAL_STATE		syntax is not a `COORDINATE`
	NULL_ARGUMENT		`coordinateType` is `null`
	UNSUPPORTED		`supportsCoordinateType(coordinateType)` is `false`
Compliance	`mandatory`		This method must be implemented.
Method	getMinimumCoordinateValues
Description	Gets the minimum coordinate values given supported coordinate type.
Parameters	`osid.type.Type`	`coordinateType`	a coordinate Type
Return	`decimal[]`		the minimum coordinate values
Errors	ILLEGAL_STATE		syntax is not a `COORDINATE`
	NULL_ARGUMENT		`coordinateType` is `null`
	UNSUPPORTED		`supportsCoordinateType(coordinateType)` is `false`
Compliance	`mandatory`		This method must be implemented.
Method	getMaximumCoordinateValues
Description	Gets the maximum coordinate values given supported coordinate type.
Parameters	`osid.type.Type`	`coordinateType`	a coordinate Type
Return	`decimal[]`		the maximum coordinate values
Errors	ILLEGAL_STATE		syntax is not a `COORDINATE`
	NULL_ARGUMENT		`coordinateType` is `null`
	UNSUPPORTED		`supportsCoordinateType(coordinateType)` is `false`
Compliance	`mandatory`		This method must be implemented.
Method	getCoordinateSet
Description	Gets the set of acceptable coordinate values.
Return	`osid.mapping.Coordinate[]`		a set of coordinates or an empty array if not restricted
Errors	ILLEGAL_STATE		syntax is not a `COORDINATE` or `isEnumerated()` is `false`
Errors	UNSUPPORTED		`supportsCoordinateType(coordinateType)` is `false`
Compliance	`mandatory`		This method must be implemented.
Method	getDefaultCoordinateValues
Description	Gets the default coordinate values. These are the values used if the element value is not provided or is cleared. If `isArray()` is false, then this method returns at most a single value.
Return	`osid.mapping.Coordinate[]`		the default coordinate values
Errors	ILLEGAL_STATE		syntax is not a `COORDINATE`
Compliance	`mandatory`		This method must be implemented.
Method	getExistingCoordinateValues
Description	Gets the existing coordinate values. If `hasSuppliedValue()` is `false`, then these values are the default values. If `isArray()` is `false` and `hasValidValue()` is true, then this method returns at most a single value.
Return	`osid.mapping.Coordinate[]`		the existing coordinate values
Errors	ILLEGAL_STATE		syntax is not a `COORDINATE` or `isValueKnown()` is `false`
Compliance	`mandatory`		This method must be implemented.
Method	getCurrencyTypes
Description	Gets the set of acceptable currency types.
Return	`osid.type.Type[]`		the set of currency types
Errors	ILLEGAL_STATE		syntax is not a `CURRENCY`
Compliance	`mandatory`		This method must be implemented.
Method	supportsCurrencyType
Description	Tests if the given currency type is supported.
Parameters	`osid.type.Type`	`currencyType`	a currency Type
Return	`boolean`		`true` if the type is supported, `false` otherwise
Errors	ILLEGAL_STATE		syntax is not a `CURRENCY`
Errors	NULL_ARGUMENT		`currencyType` is `null`
Compliance	`mandatory`		This method must be implemented.
Method	getMinimumCurrency
Description	Gets the minimum currency value.
Return	`osid.financials.Currency`		the minimum currency
Errors	ILLEGAL_STATE		syntax is not a `CURRENCY`
Errors	UNSUPPORTED		`supportsCurrencyType(currencyType)` is `false`
Compliance	`mandatory`		This method must be implemented.
Method	getMaximumCurrency
Description	Gets the maximum currency value.
Return	`osid.financials.Currency`		the maximum currency
Errors	ILLEGAL_STATE		syntax is not a `CURRENCY`
Errors	UNSUPPORTED		`supportsCurrencyType(currencyType)` is `false`
Compliance	`mandatory`		This method must be implemented.
Method	getCurrencySet
Description	Gets the set of acceptable currency values.
Return	`osid.financials.Currency[]`		a set of currencies or an empty array if not restricted
Errors	ILLEGAL_STATE		syntax is not a CURRENCY or `isEnumerated()` is `false`
Errors	UNSUPPORTED		`supportsCurrencyType(currencyType)` is `false`
Compliance	`mandatory`		This method must be implemented.
Method	getDefaultCurrencyValues
Description	Gets the default currency values. These are the values used if the element value is not provided or is cleared. If `isArray()` is false, then this method returns at most a single value.
Return	`osid.financials.Currency[]`		the default currency values
Errors	ILLEGAL_STATE		syntax is not a `CURRENCY`
Errors	UNSUPPORTED		`supportsCurrencyType(currencyType)` is `false`
Compliance	`mandatory`		This method must be implemented.
Method	getExistingCurrencyValues
Description	Gets the existing currency values. If `hasSuppliedValue()` is `false`, then these values are the default values. If `isArray()` is `false` and `hasValidValue()` is `true`, then this method returns at most a single value.
Return	`osid.financials.Currency[]`		the existing currency values
Errors	ILLEGAL_STATE		syntax is not a `CURRENCY` or `isValueKnown()` is `false`
Compliance	`mandatory`		This method must be implemented.
Method	getDateTimeResolution
Description	Gets the smallest resolution of the date time value.
Return	`osid.calendaring.DateTimeResolution`		the resolution
Errors	ILLEGAL_STATE		syntax is not a `DATETIME, DURATION`, or `TIME`
Compliance	`mandatory`		This method must be implemented.
Method	getCalendarTypes
Description	Gets the set of acceptable calendar types.
Return	`osid.type.Type[]`		the set of calendar types
Errors	ILLEGAL_STATE		syntax is not a `DATETIME` or `DURATION`
Compliance	`mandatory`		This method must be implemented.
Method	supportsCalendarType
Description	Tests if the given calendar type is supported.
Parameters	`osid.type.Type`	`calendarType`	a calendar Type
Return	`boolean`		`true` if the type is supported, `false` otherwise
Errors	ILLEGAL_STATE		syntax is not a `DATETIME` or `DURATION`
Errors	NULL_ARGUMENT		`calendarType` is `null`
Compliance	`mandatory`		This method must be implemented.
Method	getTimeTypes
Description	Gets the set of acceptable time types.
Return	`osid.type.Type[]`		a set of time types or an empty array if not restricted
Errors	ILLEGAL_STATE		syntax is not a `DATETIME, DURATION`, or `TIME`
Compliance	`mandatory`		This method must be implemented.
Method	supportsTimeType
Description	Tests if the given time type is supported.
Parameters	`osid.type.Type`	`timeType`	a time Type
Return	`boolean`		`true` if the type is supported, `false` otherwise
Errors	ILLEGAL_STATE		syntax is not a `DATETIME, DURATION`, or `TIME`
Errors	NULL_ARGUMENT		`timeType` is `null`
Compliance	`mandatory`		This method must be implemented.
Method	getMinimumDateTime
Description	Gets the minimum date time value.
Return	`osid.calendaring.DateTime`		the minimum value
Errors	ILLEGAL_STATE		syntax is not a `DATETIME`
Errors	UNSUPPORTED		`supportsCalendarTimeType(calendarType, timeType)` is `false`
Compliance	`mandatory`		This method must be implemented.
Method	getMaximumDateTime
Description	Gets the maximum date time value.
Return	`osid.calendaring.DateTime`		the maximum value
Errors	ILLEGAL_STATE		syntax is not a `DATETIME`
Errors	UNSUPPORTED		`supportsCalendarTimeType(calendarType, timeType)` is `false`
Compliance	`mandatory`		This method must be implemented.
Method	getDateTimeSet
Description	Gets the set of acceptable date time values.
Return	`osid.calendaring.DateTime[]`		a set of values or an empty array if not restricted
Errors	ILLEGAL_STATE		syntax is not a `DATETIME` or `isEnumerated()` is `false`
Compliance	`mandatory`		This method must be implemented.
Method	getDefaultDateTimeValues
Description	Gets the default date time values. These are the values used if the element value is not provided or is cleared. If `isArray()` is false, then this method returns at most a single value.
Return	`osid.calendaring.DateTime[]`		the default date time values
Errors	ILLEGAL_STATE		syntax is not a `DATETIME`
Compliance	`mandatory`		This method must be implemented.
Method	getExistingDateTimeValues
Description	Gets the existing date time values. If `hasSuppliedValue()` is `false`, then these values are the default values. If `isArray()` is `false` and `hasValidValue()` is `true`, then this method returns at most a single value.
Return	`osid.calendaring.DateTime[]`		the existing date time values
Errors	ILLEGAL_STATE		syntax is not a `DATETIME` or `isValueKnown()` is `false`
Compliance	`mandatory`		This method must be implemented.
Method	getDecimalScale
Description	Gets the number of digits to the right of the decimal point.
Return	`cardinal`		the scale
Errors	ILLEGAL_STATE		syntax is not a `DECIMAL`
Compliance	`mandatory`		This method must be implemented.
Method	getMinimumDecimal
Description	Gets the minimum decimal value.
Return	`decimal`		the minimum decimal
Errors	ILLEGAL_STATE		syntax is not a `DECIMAL`
Compliance	`mandatory`		This method must be implemented.
Method	getMaximumDecimal
Description	Gets the maximum decimal value.
Return	`decimal`		the maximum decimal
Errors	ILLEGAL_STATE		syntax is not a `DECIMAL`
Compliance	`mandatory`		This method must be implemented.
Method	getDecimalSet
Description	Gets the set of acceptable decimal values.
Return	`decimal[]`		a set of decimals or an empty array if not restricted
Errors	ILLEGAL_STATE		syntax is not a `DECIMAL` or `isEnumerated()` is `false`
Compliance	`mandatory`		This method must be implemented.
Method	getDefaultDecimalValues
Description	Gets the default decimal values. These are the values used if the element value is not provided or is cleared. If `isArray()` is false, then this method returns at most a single value.
Return	`decimal[]`		the default decimal values
Errors	ILLEGAL_STATE		syntax is not a `DECIMAL`
Compliance	`mandatory`		This method must be implemented.
Method	getExistingDecimalValues
Description	Gets the existing decimal values. If `hasSuppliedValue()` is `false`, then these values are the default values. If `isArray()` is `false` and `hasValidValue()` is `true`, then this method returns at most a single value.
Return	`decimal[]`		the existing decimal values
Errors	ILLEGAL_STATE		syntax is not a `DECIMAL` or `isValueKnown()` is `false`
Compliance	`mandatory`		This method must be implemented.
Method	getDistanceResolution
Description	Gets the smallest resolution of the distance value.
Return	`osid.mapping.DistanceResolution`		the resolution
Errors	ILLEGAL_STATE		syntax is not a `DISTANCE`
Compliance	`mandatory`		This method must be implemented.
Method	getMinimumDistance
Description	Gets the minimum distance value.
Return	`osid.mapping.Distance`		the minimum value
Errors	ILLEGAL_STATE		syntax is not a `DISTANCE`
Compliance	`mandatory`		This method must be implemented.
Method	getMaximumDistance
Description	Gets the maximum distance value.
Return	`osid.mapping.Distance`		the maximum value
Errors	ILLEGAL_STATE		syntax is not a `DISTANCE`
Compliance	`mandatory`		This method must be implemented.
Method	getDistanceSet
Description	Gets the set of acceptable distance values.
Return	`osid.mapping.Distance[]`		a set of values or an empty array if not restricted
Errors	ILLEGAL_STATE		syntax is not a `DECIMAL` or `isEnumerated()` is `false`
Compliance	`mandatory`		This method must be implemented.
Method	getDefaultDistanceValues
Description	Gets the default distance values. These are the values used if the element value is not provided or is cleared. If `isArray()` is false, then this method returns at most a single value.
Return	`osid.mapping.Distance[]`		the default distance values
Errors	ILLEGAL_STATE		syntax is not a `DISTANCE`
Compliance	`mandatory`		This method must be implemented.
Method	getExistingDistanceValues
Description	Gets the existing distance values. If `hasSuppliedValue()` is `false`, then these values are the default values. If `isArray()` is `false` and `hasValidValue()` is `true`, then this method returns at most a single value.
Return	`osid.mapping.Distance[]`		the existing distance values
Errors	ILLEGAL_STATE		syntax is not a `DISTANCE` or `isValueKnown()` is `false`
Compliance	`mandatory`		This method must be implemented.
Method	getMinimumDuration
Description	Gets the minimum duration.
Return	`osid.calendaring.Duration`		the minimum duration
Errors	ILLEGAL_STATE		syntax is not a `DURATION`
Compliance	`mandatory`		This method must be implemented.
Method	getMaximumDuration
Description	Gets the maximum duration.
Return	`osid.calendaring.Duration`		the maximum duration
Errors	ILLEGAL_STATE		syntax is not a `DURATION`
Compliance	`mandatory`		This method must be implemented.
Method	getDurationSet
Description	Gets the set of acceptable duration values.
Return	`osid.calendaring.Duration[]`		a set of durations or an empty array if not restricted
Errors	ILLEGAL_STATE		syntax is not a `DURATION` or `isEnumerated()` is `false`
Compliance	`mandatory`		This method must be implemented.
Method	getDefaultDurationValues
Description	Gets the default duration values. These are the values used if the element value is not provided or is cleared. If `isArray()` is false, then this method returns at most at most a single value.
Return	`osid.calendaring.Duration[]`		the default duration values
Errors	ILLEGAL_STATE		syntax is not a DURATION
Compliance	`mandatory`		This method must be implemented.
Method	getExistingDurationValues
Description	Gets the existing duration values. If `hasSuppliedValue()` is `false`, then these values are the default values. If `isArray()` is `false` and `hasValidValue()` is `true`, then this method returns at most a single value.
Return	`osid.calendaring.Duration[]`		the existing duration values
Errors	ILLEGAL_STATE		syntax is not a `DURATION` or `isValueKnown()` is `false`
Compliance	`mandatory`		This method must be implemented.
Method	getHeadingTypes
Description	Gets the set of acceptable heading types.
Return	`osid.type.Type[]`		a set of heading types or an empty array if not restricted
Errors	ILLEGAL_STATE		syntax is not a `HEADING`
Compliance	`mandatory`		This method must be implemented.
Method	supportsHeadingType
Description	Tests if the given heading type is supported.
Parameters	`osid.type.Type`	`headingType`	a heading Type
Return	`boolean`		`true` if the type is supported, `false` otherwise
Errors	ILLEGAL_STATE		syntax is not a `HEADING`
Errors	NULL_ARGUMENT		`headingType` is `null`
Compliance	`mandatory`		This method must be implemented.
Method	getAxesForHeadingType
Description	Gets the number of axes for a given supported heading type.
Parameters	`osid.type.Type`	`headingType`	a heading Type
Return	`cardinal`		the number of axes
Errors	ILLEGAL_STATE		syntax is not a `HEADING`
	NULL_ARGUMENT		`headingType` is `null`
	UNSUPPORTED		`supportsHeadingType(headingType)` is `false`
Compliance	`mandatory`		This method must be implemented.
Method	getMinimumHeadingValues
Description	Gets the minimum heading values given supported heading type.
Parameters	`osid.type.Type`	`headingType`	a heading Type
Return	`decimal[]`		the minimum heading values
Errors	ILLEGAL_STATE		syntax is not a `HEADING`
	NULL_ARGUMENT		`headingType` is `null`
	UNSUPPORTED		`supportsHeadingType(headingType)` is `false`
Compliance	`mandatory`		This method must be implemented.
Method	getMaximumHeadingValues
Description	Gets the maximum heading values given supported heading type.
Parameters	`osid.type.Type`	`headingType`	a heading Type
Return	`decimal[]`		the maximum heading values
Errors	ILLEGAL_STATE		syntax is not a `HEADING`
	NULL_ARGUMENT		`headingType` is `null`
	UNSUPPORTED		`supportsHeadingType(headingType)` is `false`
Compliance	`mandatory`		This method must be implemented.
Method	getHeadingSet
Description	Gets the set of acceptable heading values.
Return	`osid.mapping.Heading[]`		the set of heading
Errors	ILLEGAL_STATE		syntax is not a `HEADING` or `isEnumerated()` is `false`
Compliance	`mandatory`		This method must be implemented.
Method	getDefaultHeadingValues
Description	Gets the default heading values. These are the values used if the element value is not provided or is cleared. If `isArray()` is false, then this method returns at most a single value.
Return	`osid.mapping.Heading[]`		the default heading values
Errors	ILLEGAL_STATE		syntax is not a `HEADING`
Compliance	`mandatory`		This method must be implemented.
Method	getExistingHeadingValues
Description	Gets the existing heading values. If `hasSuppliedValue()` is `false`, then these values are the default values. If `isArray()` is `false` and `hasValidValue()` is `true`, then this method returns at most a single value.
Return	`osid.mapping.Heading[]`		the existing heading values
Errors	ILLEGAL_STATE		syntax is not a `HEADING` or `isValueKnown()` is `false`
Compliance	`mandatory`		This method must be implemented.
Method	getIdSet
Description	Gets the set of acceptable `Ids`.
Return	`osid.id.Id[]`		a set of `Ids` or an empty array if not restricted
Errors	ILLEGAL_STATE		syntax is not an `ID` or `isEnumerated()` is `false`
Compliance	`mandatory`		This method must be implemented.
Method	getDefaultIdValues
Description	Gets the default `Id` values. These are the values used if the element value is not provided or is cleared. If `isArray()` is false, then this method returns at most a single value.
Return	`osid.id.Id[]`		the default `Id` values
Errors	ILLEGAL_STATE		syntax is not an `ID`
Compliance	`mandatory`		This method must be implemented.
Method	getExistingIdValues
Description	Gets the existing `Id` values. If `hasSuppliedValue()` is `false`, then these values are the default values. If `isArray()` is `false` and `hasValidValue()` is `true`, then this method returns at most a single value.
Return	`osid.id.Id[]`		the existing `Id` values
Errors	ILLEGAL_STATE		syntax is not an `ID`
Compliance	`mandatory`		This method must be implemented.
Method	getMinimumInteger
Description	Gets the minimum integer value.
Return	`integer`		the minimum value
Errors	ILLEGAL_STATE		syntax is not an `INTEGER`
Compliance	`mandatory`		This method must be implemented.
Method	getMaximumInteger
Description	Gets the maximum integer value.
Return	`integer`		the maximum value
Errors	ILLEGAL_STATE		syntax is not an `INTEGER`
Compliance	`mandatory`		This method must be implemented.
Method	getIntegerSet
Description	Gets the set of acceptable integer values.
Return	`integer[]`		a set of values or an empty array if not restricted
Errors	ILLEGAL_STATE		syntax is not an `INTEGER` or `isEnumerated()` is `false`
Compliance	`mandatory`		This method must be implemented.
Method	getDefaultIntegerValues
Description	Gets the default integer values. These are the values used if the element value is not provided or is cleared. If `isArray()` is `false` then this method returns at most a single value.
Return	`integer[]`		the default integer values
Errors	ILLEGAL_STATE		syntax is not an `INTEGER`
Compliance	`mandatory`		This method must be implemented.
Method	getExistingIntegerValues
Description	Gets the existing integer values. If `hasSuppliedValue()` is `false`, then these values are the default values. If `isArray()` is `false` and `hasValidValue()` is `true`, then this method returns at most a single value.
Return	`integer[]`		the existing integer values
Errors	ILLEGAL_STATE		syntax is not a `INTEGER` or isValueKnown() is false
Compliance	`mandatory`		This method must be implemented.
Method	getObjectTypes
Description	Gets the set of acceptable `Types` for an arbitrary object.
Return	`osid.type.Type[]`		a set of `Types` or an empty array if not restricted
Errors	ILLEGAL_STATE		syntax is not an `OBJECT`
Compliance	`mandatory`		This method must be implemented.
Method	supportsObjectType
Description	Tests if the given object type is supported.
Parameters	`osid.type.Type`	`objectType`	an object Type
Return	`boolean`		`true` if the type is supported, `false` otherwise
Errors	ILLEGAL_STATE		syntax is not an `OBJECT`
Errors	NULL_ARGUMENT		`objectType` is `null`
Compliance	`mandatory`		This method must be implemented.
Method	getObjectSet
Description	Gets the set of acceptable object values.
Return	`object[]`		a set of values or an empty array if not restricted
Errors	ILLEGAL_STATE		syntax is not an `OBJECT` or `isEnumerated()` is `false`
Compliance	`mandatory`		This method must be implemented.
Method	getDefaultObjectValues
Description	Gets the default object values. These are the values used if the element value is not provided or is cleared. If `isArray()` is false, then this method returns at most a single value.
Return	`object[]`		the default object values
Errors	ILLEGAL_STATE		syntax is not an `OBJECT`
Compliance	`mandatory`		This method must be implemented.
Method	getExistingObjectValues
Description	Gets the existing object values. If `hasSuppliedValue()` is `false`, then these values are the default values. If `isArray()` is `false` and `hasValidValue()` is `true`, then this method returns at most a single value.
Return	`object[]`		the existing object values
Errors	ILLEGAL_STATE		syntax is not an OBJECT or `isValueKnown()` is `false`
Compliance	`mandatory`		This method must be implemented.
Method	getSpatialUnitRecordTypes
Description	Gets the set of acceptable spatial unit record types.
Return	`osid.type.Type[]`		the set of spatial unit types
Errors	ILLEGAL_STATE		syntax is not `SPATIALUNIT`
Compliance	`mandatory`		This method must be implemented.
Method	supportsSpatialUnitRecordType
Description	Tests if the given spatial unit record type is supported.
Parameters	`osid.type.Type`	`spatialUnitRecordType`	a spatial unit record Type
Return	`boolean`		`true` if the type is supported, `false` otherwise
Errors	ILLEGAL_STATE		syntax is not an `SPATIALUNIT`
Errors	NULL_ARGUMENT		`spatialUnitRecordType` is `null`
Compliance	`mandatory`		This method must be implemented.
Method	getSpatialUnitSet
Description	Gets the set of acceptable spatial unit values.
Return	`osid.mapping.SpatialUnit[]`		a set of spatial units or an empty array if not restricted
Errors	ILLEGAL_STATE		syntax is not a `SPATIALUNIT` or `isEnumerated()` is `false`
Compliance	`mandatory`		This method must be implemented.
Method	getDefaultSpatialUnitValues
Description	Gets the default spatial unit values. These are the values used if the element value is not provided or is cleared. If `isArray()` is false, then this method returns at most a single value.
Return	`osid.mapping.SpatialUnit[]`		the default spatial unit values
Errors	ILLEGAL_STATE		syntax is not a `SPATIALUNIT`
Compliance	`mandatory`		This method must be implemented.
Method	getExistingSpatialUnitValues
Description	Gets the existing spatial unit values. If `hasSuppliedValue()` is `false`, then these values are the default values. If `isArray()` is `false` and `hasValidValue()` is `true`, then this method returns at most a single value.
Return	`osid.mapping.SpatialUnit[]`		the existing spatial unit values
Errors	ILLEGAL_STATE		syntax is not a SPATIALUNIT or `isValueKnown()` is `false`
Compliance	`mandatory`		This method must be implemented.
Method	getMinimumSpeed
Description	Gets the minimum speed value.
Return	`osid.mapping.Speed`		the minimum speed
Errors	ILLEGAL_STATE		syntax is not a `SPEED`
Compliance	`mandatory`		This method must be implemented.
Method	getMaximumSpeed
Description	Gets the maximum speed value.
Return	`osid.mapping.Speed`		the maximum speed
Errors	ILLEGAL_STATE		syntax is not a `SPEED`
Compliance	`mandatory`		This method must be implemented.
Method	getSpeedSet
Description	Gets the set of acceptable speed values.
Return	`osid.mapping.Speed[]`		a set of speeds or an empty array if not restricted
Errors	ILLEGAL_STATE		syntax is not a `SPEED` or `isEnumerated()` is `false`
Compliance	`mandatory`		This method must be implemented.
Method	getDefaultSpeedValues
Description	Gets the default speed values. These are the values used if the element value is not provided or is cleared. If `isArray()` is false, then this method returns at most a single value.
Return	`osid.mapping.Speed[]`		the default speed values
Errors	ILLEGAL_STATE		syntax is not a `SPEED`
Compliance	`mandatory`		This method must be implemented.
Method	getExistingSpeedValues
Description	Gets the existing speed values. If `hasSuppliedValue()` is `false`, then these values are the default values. If `isArray()` is `false` and `hasValidValue()` is `true`, then this method returns at most a single value.
Return	`osid.mapping.Speed[]`		the existing speed values
Errors	ILLEGAL_STATE		syntax is not a `SPEED` or `isValueKnown()` is `false`
Compliance	`mandatory`		This method must be implemented.
Method	getMinimumStringLength
Description	Gets the minimum string length.
Return	`cardinal`		the minimum string length
Errors	ILLEGAL_STATE		syntax is not a `STRING` or `DISPLAYTEXT`
Compliance	`mandatory`		This method must be implemented.
Method	getMaximumStringLength
Description	Gets the maximum string length.
Return	`cardinal`		the maximum string length
Errors	ILLEGAL_STATE		syntax is not a `STRING` or `DISPLAYTEXT`
Compliance	`mandatory`		This method must be implemented.
Method	getStringMatchTypes
Description	Gets the set of valid string match types for use in validating a string. If the string match type indicates a regular expression then `getStringExpression()` returns a regular expression.
Return	`osid.type.Type[]`		the set of string match types
Errors	ILLEGAL_STATE		syntax is not a `STRING` or `DISPLAYTEXT`
Compliance	`mandatory`		This method must be implemented.
Method	supportsStringMatchType
Description	Tests if the given string match type is supported.
Parameters	`osid.type.Type`	`stringMatchType`	a string match type
Return	`boolean`		`true` if the given string match type Is supported, `false` otherwise
Errors	ILLEGAL_STATE		syntax is not a `STRING` or `DISPLAYTEXT`
Errors	NULL_ARGUMENT		`stringMatchType` is `null`
Compliance	`mandatory`		This method must be implemented.
Method	getStringExpression
Description	Gets the regular expression of an acceptable string for the given string match type.
Parameters	`osid.type.Type`	`stringMatchType`	a string match type
Return	`string`		the regular expression
Errors	NULL_ARGUMENT		`stringMatchType` is `null`
	ILLEGAL_STATE		syntax is not a `STRING` or `DISPLAYTEXT`
	UNSUPPORTED		`supportsStringMatchType(stringMatchType`) is `false`
Compliance	`mandatory`		This method must be implemented.
Method	getStringFormatTypes
Description	Gets the set of valid string formats.
Return	`osid.type.Type[]`		the set of valid text format types
Errors	ILLEGAL_STATE		syntax is not a `STRING`
Compliance	`mandatory`		This method must be implemented.
Method	getStringSet
Description	Gets the set of acceptable string values.
Return	`string[]`		a set of strings or an empty array if not restricted
Errors	ILLEGAL_STATE		syntax is not a `STRING` or `isEnumerated()` is `false`
Compliance	`mandatory`		This method must be implemented.
Method	getDefaultStringValues
Description	Gets the default string values. These are the values used if the element value is not provided or is cleared. If `isArray()` is false, then this method returns at most a single value.
Return	`string[]`		the default string values
Errors	ILLEGAL_STATE		syntax is not a `STRING`
Compliance	`mandatory`		This method must be implemented.
Method	getExistingStringValues
Description	Gets the existing string values. If `hasSuppliedValue()` is `false`, then these values are the default values. If `isArray()` is `false` and `hasValidValue()` is `true`, then this method returns at most a single value.
Return	`string[]`		the existing string values
Errors	ILLEGAL_STATE		syntax is not a `STRING` or `isValueKnown()` is `false`
Compliance	`mandatory`		This method must be implemented.
Method	getMinimumTime
Description	Gets the minimum time value.
Return	`osid.calendaring.Time`		the minimum time
Errors	ILLEGAL_STATE		syntax is not a `TIME`
Compliance	`mandatory`		This method must be implemented.
Method	getMaximumTime
Description	Gets the maximum time value.
Return	`osid.calendaring.Time`		the maximum time
Errors	ILLEGAL_STATE		syntax is not a `TIME`
Compliance	`mandatory`		This method must be implemented.
Method	getTimeSet
Description	Gets the set of acceptable time values.
Return	`osid.calendaring.Time[]`		a set of times or an empty array if not restricted
Errors	ILLEGAL_STATE		syntax is not a `TIME` or `isEnumerated()` is `false`
Compliance	`mandatory`		This method must be implemented.
Method	getDefaultTimeValues
Description	Gets the default time values. These are the values used if the element value is not provided or is cleared. If `isArray()` is false, then this method returns at most a single value.
Return	`osid.calendaring.Time[]`		the default time values
Errors	ILLEGAL_STATE		syntax is not a `TIME`
Compliance	`mandatory`		This method must be implemented.
Method	getExistingTimeValues
Description	Gets the existing time values. If `hasSuppliedValue()` are `false`, then these values are the default values. If `isArray()` is `false` and `hasValidValue()` is `true`, then this method returns at most a single value.
Return	`osid.calendaring.Time[]`		the existing time values
Errors	ILLEGAL_STATE		syntax is not a `TIME`
Compliance	`mandatory`		This method must be implemented.
Method	getTypeSet
Description	Gets the set of acceptable `Types`.
Return	`osid.type.Type[]`		a set of `Types` or an empty array if not restricted
Errors	ILLEGAL_STATE		syntax is not a `TYPE` or `isEnumerated()` is `false`
Compliance	`mandatory`		This method must be implemented.
Method	getDefaultTypeValues
Description	Gets the default type values. These are the values used if the element value is not provided or is cleared. If `isArray()` is false, then this method returns at most a single value.
Return	`osid.type.Type[]`		the default type values
Errors	ILLEGAL_STATE		syntax is not a `TYPE`
Compliance	`mandatory`		This method must be implemented.
Method	getExistingTypeValues
Description	Gets the existing type values. If `hasSuppliedValue()` is `false`, then these values are the default values. If `isArray()` is `false` and `hasValidValue()` is `true`, then this method returns at most a single value.
Return	`osid.type.Type[]`		the existing type values
Errors	ILLEGAL_STATE		syntax is not a `TYPE` or `isValueKnown()` is `false`
Compliance	`mandatory`		This method must be implemented.
Method	getVersionTypes
Description	Gets the set of acceptable version types.
Return	`osid.type.Type[]`		the set of version types
Errors	ILLEGAL_STATE		syntax is not a `VERSION`
Compliance	`mandatory`		This method must be implemented.
Method	supportsVersionType
Description	Tests if the given version type is supported.
Parameters	`osid.type.Type`	`versionType`	a version Type
Return	`boolean`		`true` if the type is supported, `false` otherwise
Errors	ILLEGAL_STATE		syntax is not a `VERSION`
Errors	NULL_ARGUMENT		`versionType` is `null`
Compliance	`mandatory`		This method must be implemented.
Method	getMinimumVersion
Description	Gets the minumim acceptable `Version`.
Return	`osid.installation.Version`		the minumim `Version`
Errors	ILLEGAL_STATE		syntax is not a `VERSION`
Compliance	`mandatory`		This method must be implemented.
Method	getMaximumVersion
Description	Gets the maximum acceptable `Version`.
Return	`osid.installation.Version`		the maximum `Version`
Errors	ILLEGAL_STATE		syntax is not a `VERSION`
Compliance	`mandatory`		This method must be implemented.
Method	getVersionSet
Description	Gets the set of acceptable `Versions`.
Return	`osid.installation.Version[]`		a set of `Versions` or an empty array if not restricted
Errors	ILLEGAL_STATE		syntax is not a `VERSION` or `isEnumerated()` is `false`
Compliance	`mandatory`		This method must be implemented.
Method	getDefaultVersionValues
Description	Gets the default version values. These are the values used if the element value is not provided or is cleared. If `isArray()` is false, then this method returns at most a single value.
Return	`osid.installation.Version[]`		the default version values
Errors	ILLEGAL_STATE		syntax is not a TIME or isValueKnown() is false
Compliance	`mandatory`		This method must be implemented.
Method	getExistingVersionValues
Description	Gets the existing version values. If `hasSuppliedValue()` is `false`, then these values are the default values. If `isArray()` is `false` and `hasValidValue()` is `true`, then this method returns at most a single value.
Return	`osid.installation.Version[]`		the existing version values
Errors	ILLEGAL_STATE		syntax is not a `VERSION` or `isValueKnown()` is `false`
Compliance	`mandatory`		This method must be implemented.