OSID - osid.workflow.StepList Service Interface Definition

Interface	osid.workflow.StepList
Implements	`osid.OsidList`
Used By	`osid.workflow.ManualWorkflowSession`
	`osid.workflow.StepLookupSession`
	`osid.workflow.StepOfficeSession`
	`osid.workflow.StepQuerySession`
	`osid.workflow.StepSearchResults`
	`osid.workflow.rules.StepConstrainerRuleLookupSession`
	`osid.workflow.rules.StepEnablerRuleLookupSession`
	`osid.workflow.rules.StepProcessorRuleLookupSession`
Description	Like all `OsidLists` , `StepList` provides a means for accessing `Step` elements sequentially either one at a time or many at a time. Examples: while (sl.hasNext()) { Step step = sl.getNextStep(); } or while (sl.hasNext()) { Step[] steps = sl.getNextSteps(sl.available()); }
Method	getNextStep
Description	Gets the next `Step` in this list.
Return	`osid.workflow.Step`		the next `Step` in this list. The `hasNext()` method should be used to test that a next `Step` 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	getNextSteps
Description	Gets the next set of `Step` elements in this list. The specified amount must be less than or equal to the return from `available()` .
Parameters	`cardinal`	`n`	the number of `Step` elements requested which must be less than or equal to `available()`
Return	`osid.workflow.Step[]`		an array of `Step` 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.