OSID - osid.hierarchy.NodeList Service Interface Definition

Interface	osid.hierarchy.NodeList
Implements	`osid.OsidList`
Used By	`osid.hierarchy.Node`
Description	Like all `OsidLists`, `NodeList` provides a means for accessing `Id` elements sequentially either one at a time or many at a time. Examples: while (nl.hasNext()) { Node node = nl.getNextNode(); } or while (nl.hasNext()) { Node[] nodes = nl.getNextNodes(nl.available()); }
Method	getNextNode
Description	Gets the next `Node` in this list.
Return	`osid.hierarchy.Node`		the next `Node` in this list. The `hasNext()` method should be used to test that a next `Node` 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	getNextNodes
Description	Gets the next set of `Node` objects in this list. The specified amount must be less than or equal to the return from `available()`.
Parameters	`cardinal`	`n`	the number of `Node` elements requested which must be less than or equal to `available()`
Return	`osid.hierarchy.Node[]`		an array of `Node` 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.