OSID - osid.mapping.path.SignalList Service Interface Definition

Interface	osid.mapping.path.SignalList
Implements	`osid.OsidList`
Used By	`osid.mapping.path.SignalLookupSession`
	`osid.mapping.path.SignalMapSession`
	`osid.mapping.path.SignalQuerySession`
	`osid.mapping.path.SignalSearchResults`
	`osid.mapping.path.rules.SignalEnablerRuleLookupSession`
Description	Like all `OsidLists`, `SignalList` provides a means for accessing `Signal` elements sequentially either one at a time or many at a time. Examples: while (lsl.hasNext()) { Signal signal = sl.getNextSignal(); } or while (sl.hasNext()) { Signal[] signals = sl.getNextSignals(sl.available()); }
Method	getNextSignal
Description	Gets the next `Signal` in this list.
Return	`osid.mapping.path.Signal`		the next `Signal` in this list. The `hasNext()` method should be used to test that a next `Signal` 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	getNextSignals
Description	Gets the next set of `Signal` elements in this list. The specified amount must be less than or equal to the return from `available()`.
Parameters	`cardinal`	`n`	the number of `Signal` elements requested which must be less than or equal to `available()`
Return	`osid.mapping.path.Signal[]`		an array of `Signal` 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.