OSID - osid.course.ActivityUnitList Service Interface Definition

Interface	osid.course.ActivityUnitList
Implements	`osid.OsidList`
Used By	`osid.course.ActivityUnitCourseCatalogSession`
	`osid.course.ActivityUnitLookupSession`
	`osid.course.ActivityUnitQuerySession`
	`osid.course.ActivityUnitSearchResults`
Description	Like all `OsidLists`, `ActivityUnitList` provides a means for accessing `ActivityUnit` elements sequentially either one at a time or many at a time. Examples: while (aul.hasNext()) { ActivityUnit unit = aul.getNextActivityUnit(); } or while (aul.hasNext()) { ActivityUnit[] units = aul.getNextActivityUnits(aul.available()); }
Method	getNextActivityUnit
Description	Gets the next `ActivityUnit` in this list.
Return	`osid.course.ActivityUnit`		the next `ActivityUnit` in this list. The `hasNext()` method should be used to test that a next `ActivityUnit` 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	getNextActivityUnits
Description	Gets the next set of `ActivityUnit` elements in this list. The specified amount must be less than or equal to the return from `available()`.
Parameters	`cardinal`	`n`	the number of `ActivityUnit` elements requested which must be less than or equal to `available()`
Return	`osid.course.ActivityUnit[]`		an array of `ActivityUnit` 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.