OSID - osid.topology.GraphList Service Interface Definition

Interface	osid.topology.GraphList
Implements	`osid.OsidList`
Used By	`osid.topology.EdgeGraphSession`
	`osid.topology.GraphHierarchySession`
	`osid.topology.GraphLookupSession`
	`osid.topology.GraphQuerySession`
	`osid.topology.GraphSearchResults`
	`osid.topology.NodeGraphSession`
	`osid.topology.path.PathGraphSession`
	`osid.topology.rules.EdgeEnablerGraphSession`
Description	Like all `OsidLists` , `GraphList` provides a means for accessing `Graph` elements sequentially either one at a time or many at a time. Examples: while (gl.hasNext()) { Graph graph = gl.getNextGraph(); } or while (gl.hasNext()) { Graph[] graphs = gl.getNextGraphs(gl.available()); }
Method	getNextGraph
Description	Gets the next `Graph` in this list.
Return	`osid.topology.Graph`		the next `Graph` in this list. The `hasNext()` method should be used to test that a next `Graph` 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	getNextGraphs
Description	Gets the next set of `Graph` elements in this list. The specified amount must be less than or equal to the return from `available()` .
Parameters	`cardinal`	`n`	the number of `Graph` elements requested which must be less than or equal to `available()`
Return	`osid.topology.Graph[]`		an array of `Graph` 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.