OSID - osid.grading.GradeList Service Interface Definition

Interface	osid.grading.GradeList
Implements	`osid.OsidList`
Used By	`osid.course.Course`
	`osid.course.CourseOffering`
	`osid.grading.GradeGradebookSession`
	`osid.grading.GradeLookupSession`
	`osid.grading.GradeQuerySession`
	`osid.grading.GradeSearchResults`
	`osid.grading.GradeSystem`
Description	Like all `OsidLists`, `GradeList` provides a means for accessing `Grade` elements sequentially either one at a time or many at a time. Examples: while (gl.hasNext()) { Grade grade = gl.getNextGrade(); } or while (gl.hasNext()) { Grade[] grades = gl.getNextGrades(gl.available()); }
Method	getNextGrade
Description	Gets the next `Grade` in this list.
Return	`osid.grading.Grade`		the next `Grade` in this list. The `hasNext()` method should be used to test that a next `Grade` 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	getNextGrades
Description	Gets the next set of `Grade` elements in this list which must be less than or equal to the return from `available()`.
Parameters	`cardinal`	`n`	the number of `Grade` elements requested which must be less than or equal to `available()`
Return	`osid.grading.Grade[]`		an array of `Grade` 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.