OSID Specifications
topology package
Version 3.1.0
topology package
Version 3.1.0
| Interface | osid.topology.TopologyRoutingSession | ||
|---|---|---|---|
| Implements | osid.OsidSession | ||
| Used By | osid.topology.TopologyManager | ||
osid.topology.TopologyProxyManager | |||
| Description |
This session defines methods to route between nodes. | ||
| Method | getGraphId | ||
| Description |
Gets the | ||
| Return | osid.id.Id | the Graph Id associated with this session | |
| Compliance | mandatory | This method must be implemented. | |
| Method | getGraph | ||
| Description |
Gets the | ||
| Return | osid.topology.Graph | the graph | |
| Errors | OPERATION_FAILED | unable to complete request | |
| PERMISSION_DENIED | authorization failure | ||
| Compliance | mandatory | This method must be implemented. | |
| Method | canTraverseTopology | ||
| Description |
Tests if this user can traverse the topology. 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
| ||
| Return | boolean | false if topology methods are not authorized,
true otherwise | |
| Compliance | mandatory | This method must be implemented. | |
| Method | useComparativeNodeView | ||
| Description |
The returns from the traversal methods may omit or translate elements based on this session, such as authorization, and not result in an error. This view is used when greater interoperability is desired at the expense of precision. | ||
| Compliance | mandatory | This method is must be implemented. | |
| Method | usePlenaryNodeView | ||
| Description |
A complete view of the method returns is desired. Methods will return what is requested or result in an error. This view is used when greater precision is desired at the expense of interoperability. | ||
| Compliance | mandatory | This method is must be implemented. | |
| Method | useFederatedGraphView | ||
| Description |
Federates the view for methods in this session. A federated view will include edges 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 retrievals to this graph only. | ||
| Compliance | mandatory | This method is must be implemented. | |
| Method | findShortestPathByHops | ||
| Description |
Gets all the edges forming shortest path by number of node hops between two nodes. | ||
| Parameters | osid.id.Id | startNodeId | the starting node Id |
osid.id.Id | endNodeId | the ending node Id | |
| Return | osid.topology.EdgeList | a list of edges | |
| Errors | NOT_FOUND | startNodeId or endNodeId is not found or not
connected | |
| NULL_ARGUMENT | startNodeId or endNodeId is null | ||
| OPERATION_FAILED | unable to complete request | ||
| PERMISSION_DENIED | authorization failure | ||
| Compliance | mandatory | This method must be implemented. | |
| Method | findShortestPathByDistance | ||
| Description |
Gets all the edges forming shortest path by total distance between two nodes. | ||
| Parameters | osid.id.Id | startNodeId | the starting node Id |
osid.id.Id | endNodeId | the ending node Id | |
| Return | osid.topology.EdgeList | a list of edges | |
| Errors | NOT_FOUND | startNodeId or endNodeId is not found or not
connected | |
| NULL_ARGUMENT | startNodeId or endNodeId is null | ||
| OPERATION_FAILED | unable to complete request | ||
| PERMISSION_DENIED | authorization failure | ||
| Compliance | mandatory | This method must be implemented. | |
| Method | findCheapestPath | ||
| Description |
Gets all the edges forming lowest cost path between two nodes. | ||
| Parameters | osid.id.Id | startNodeId | the starting node Id |
osid.id.Id | endNodeId | the ending node Id | |
| Return | osid.topology.EdgeList | a list of edges | |
| Errors | NOT_FOUND | startNodeId or endNodeId is not found or not
connected | |
| NULL_ARGUMENT | startNodeId or endNodeId is null | ||
| OPERATION_FAILED | unable to complete request | ||
| PERMISSION_DENIED | authorization failure | ||
| Compliance | mandatory | This method must be implemented. | |
| Method | areNodesConnected | ||
| Description |
Tests if there is an active path between the two given nodes. | ||
| Parameters | osid.id.Id | startNodeId | the starting node Id |
osid.id.Id | endNodeId | the ending node Id | |
| Return | boolean | true if a path exists, false otherwise | |
| Errors | NULL_ARGUMENT | startNodeId or endNodeId is null | |
| OPERATION_FAILED | unable to complete request | ||
| PERMISSION_DENIED | authorization failure | ||
| Compliance | mandatory | This method must be implemented. | |