OSID - osid.resource.demographic.DemographicList Service Interface Definition

Interface	osid.resource.demographic.DemographicList
Implements	`osid.OsidList`
Used By	`osid.resource.demographic.Demographic`
	`osid.resource.demographic.DemographicBinSession`
	`osid.resource.demographic.DemographicEnablerRuleLookupSession`
	`osid.resource.demographic.DemographicLookupSession`
	`osid.resource.demographic.DemographicQuerySession`
	`osid.resource.demographic.DemographicSearchResults`
Description	Like all `OsidLists` , `DemographicList` provides a means for accessing `Demographic` elements sequentially either one at a time or many at a time. Examples: while (dl.hasNext()) { Demographic demographic = dl.getNextDemographic(); } or while (dl.hasNext()) { Demographic[] demographics = dl.getNextDemographics(dl.available()); }
Method	getNextDemographic
Description	Gets the next `Demographic` in this list.
Return	`osid.resource.demographic.Demographic`		the next `Demographic` in this list. The `hasNext()` method should be used to test that a next `Demographic` is available before calling this method.
Errors	ILLEGAL_STATE		no more elements available in this list
Errors	OPERATION_FAILED		unable to complete request
Compliance	`mandatory`		This method must be implemented.
Method	getNextDemographics
Description	Gets the next set of `Demographic` elements in this list. The specified amount must be less than or equal to the return from `available()` .
Parameters	`cardinal`	`n`	the number of `Demographic` elements requested which must be less than or equal to `available()`
Return	`osid.resource.demographic.Demographic[]`		an array of `Demographic` elements. The length of the array is less than or equal to the number specified.
Errors	ILLEGAL_STATE		no more elements available in this list
Errors	OPERATION_FAILED		unable to complete request
Compliance	`mandatory`		This method must be implemented.