OSID - osid.metering.StatisticList Service Interface Definition

Interface	osid.metering.StatisticList
Implements	`osid.OsidList`
Used By	`osid.metering.StatisticLookupSession`
	`osid.metering.StatisticQuerySession`
	`osid.metering.StatisticSearchResults`
Description	Like all `OsidLists`, `StatisticList` provides a means for accessing `Statistic` elements sequentially either one at a time or many at a time. Examples: while (sl.hasNext()) { Statistic stat = sl.getNextStatistic(); } or while (sl.hasNext()) { Statistic[] stats = sl.getNextStatistics(sl.available()); }
Method	getNextStatistic
Description	Gets the next `Statistic` in this list.
Return	`osid.metering.Statistic`		the next `Statistic` in this list. The `hasNext()` method should be used to test that a next `Statistic` 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	getNextStatistics
Description	Gets the next set of `Statistic` elements in this list. The specified amount must be less than or equal to the return from `available()`.
Parameters	`cardinal`	`n`	the number of `Statistic` elements requested which must be less than or equal to `available()`
Return	`osid.metering.Statistic[]`		an array of `Statistic` 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.