OSID - osid.topology.NodeQuerySession Service Interface Definition

Interface	osid.topology.NodeQuerySession
Implements	`osid.OsidSession`
Implemented By	`osid.topology.NodeSearchSession`
Used By	`osid.topology.TopologyManager`
Used By	`osid.topology.TopologyProxyManager`
Description	This session provides methods for searching among `Node` objects. The search query is constructed using the `NodeQuery`. This session defines views that offer differing behaviors for searching. federated graph view: searches include nodes in graphs of which this graph is an ancestor in the graph hierarchy isolated graph view: searches are restricted to nodes in this graph Nodes may have a query record indicated by their respective record types. The query record is accessed via the `NodeQuery`.
Method	getGraphId
Description	Gets the `Graph` `Id` associated with this session.
Return	`osid.id.Id`		the `Graph Id` associated with this session
Compliance	`mandatory`		This method must be implemented.
Method	getGraph
Description	Gets the `Graph` associated with this session.
Return	`osid.topology.Graph`		the graph
Errors	OPERATION_FAILED		unable to complete request
Errors	PERMISSION_DENIED		authorization failure
Compliance	`mandatory`		This method must be implemented.
Method	canSearchNodes
Description	Tests if this user can perform `Node` lookups. A return of true does not guarantee successful authorization. A return of false indicates that it is known all methods in this session will result in a `PERMISSION_DENIED`. This is intended as a hint to an application that may not offer lookup operations to unauthorized users.
Return	`boolean`		`false` if search methods are not authorized, `true` otherwise
Compliance	`mandatory`		This method must be implemented.
Method	useFederatedGraphView
Description	Federates the view for methods in this session. A federated view will include nodes in graphs which are children of this graph in the graph hierarchy.
Compliance	`mandatory`		This method is must be implemented.
Method	useIsolatedGraphView
Description	Isolates the view for methods in this session. An isolated view restricts lookups to this graph only.
Compliance	`mandatory`		This method is must be implemented.
Method	getNodeQuery
Description	Gets a node query.
Return	`osid.topology.NodeQuery`		the node query
Compliance	`mandatory`		This method must be implemented.
Method	getNodesByQuery
Description	Gets a list of `Nodes` matching the given node query.
Parameters	`osid.topology.NodeQuery`	`nodeQuery`	the node query
Return	`osid.topology.NodeList`		the returned `NodeList`
Errors	NULL_ARGUMENT		`nodeQuery` is `null`
	OPERATION_FAILED		unable to complete request
	PERMISSION_DENIED		authorization failure
	UNSUPPORTED		`nodeQuery` is not of this service
Compliance	`mandatory`		This method must be implemented.