OSID - osid.topology.EdgeList Service Interface Definition

Interface	osid.topology.EdgeList
Implements	`osid.OsidList`
Used By	`osid.topology.EdgeGraphSession`
	`osid.topology.EdgeLookupSession`
	`osid.topology.EdgeQuerySession`
	`osid.topology.EdgeSearchResults`
	`osid.topology.TopologyRoutingSession`
	`osid.topology.TopologyTraversalSession`
	`osid.topology.path.Path`
	`osid.topology.rules.EdgeEnablerRuleLookupSession`
Description	Like all `OsidLists` , `EdgeList` provides a means for accessing `Edge` elements sequentially either one at a time or many at a time. Examples: while (el.hasNext()) { Edge edge = el.getNextEdge(); } or while (el.hasNext()) { Edge[] edges = el.getNextEdges(el.available()); }
Method	getNextEdge
Description	Gets the next `Edge` in this list.
Return	`osid.topology.Edge`		the next `Edge` in this list. The `hasNext()` method should be used to test that a next `Edge` 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	getNextEdges
Description	Gets the next set of `Edge` elements in this list. The specified amount must be less than or equal to the return from `available()` .
Parameters	`cardinal`	`n`	the number of `Edge` elements requested which must be less than or equal to `available()`
Return	`osid.topology.Edge[]`		an array of `Edge` 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.