OSID - osid.topology.EdgeLookupSession Service Interface Definition

Interface	osid.topology.EdgeLookupSession
Implements	`osid.OsidSession`
Used By	`osid.topology.TopologyManager`
Used By	`osid.topology.TopologyProxyManager`
Description	This session provides methods for retrieving `Edge` objects. The `Edge` represents a connection between two `Nodes`. This session defines views that offer differing behaviors when retrieving multiple objects. comparative view: elements may be silently omitted or re-ordered plenary view: provides a complete set or is an error condition isolated graph view: All edge methods in this session operate, retrieve and pertain to edges defined explicitly in the current graph. Using an isolated view is useful for managing `Edges` with the `EdgeAdminSession`. federated graph view: All edge methods in this session operate, retrieve and pertain to all edges defined in this graph and any other edges implicitly available in this graph through graph inheritence. effective edge view: All edge lookup methods return edges where the current dates falls in between the effective dates inclusive. any effective edge view: Edges of any effective date are returned. Generally, the comparative view should be used for most applications as it permits operation even if there is data that cannot be accessed. The methods `useFederatedGraphView()` and `useIsolatedGraphView()` behave as a radio group and one should be selected before invoking any lookup methods.
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	canLookupEdges
Description	Tests if this user can perform `Edge` 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 opt not to offer lookup operations to unauthorized users.
Return	`boolean`		`false` if lookup methods are not authorized, `true` otherwise
Compliance	`mandatory`		This method must be implemented.
Method	useComparativeEdgeView
Description	The returns from the lookup 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	usePlenaryEdgeView
Description	A complete view of the `Edge` 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 lookups to this graph only.
Compliance	`mandatory`		This method is must be implemented.
Method	useEffectiveEdgeView
Description	Only edges whose effective dates are current are returned by methods in this session.
Compliance	`mandatory`		This method is must be implemented.
Method	useAnyEffectiveEdgeView
Description	All edges of any effective dates are returned by all methods in this session.
Compliance	`mandatory`		This method is must be implemented.
Method	getEdge
Description	Gets the `Edge` specified by its `Id`. In plenary mode, the exact `Id` is found or a `NOT_FOUND` results. Otherwise, the returned `Edge` may have a different `Id` than requested, such as the case where a duplicate `Id` was assigned to an `Edge` and retained for compatibility. In effective mode, edges are returned that are currently effective. In any effective mode, effective edges and those currently expired are returned.
Parameters	`osid.id.Id`	`edgeId`	`Id` of the `Edge`
Return	`osid.topology.Edge`		the edge
Errors	NOT_FOUND		`edgeId` not found
	NULL_ARGUMENT		`edgeId` is `null`
	OPERATION_FAILED		unable to complete request
	PERMISSION_DENIED		authorization failure
Compliance	`mandatory`		This method is must be implemented.
Method	getEdgesByIds
Description	Gets an `EdgeList` corresponding to the given `IdList`. In plenary mode, the returned list contains all of the edges specified in the `Id` list, in the order of the list, including duplicates, or an error results if an `Id` in the supplied list is not found or inaccessible. Otherwise, inaccessible `Edges` may be omitted from the list and may present the elements in any order including returning a unique set. In effective mode, edges are returned that are currently effective. In any effective mode, effective edges and those currently expired are returned.
Parameters	`osid.id.IdList`	`edgeIds`	the list of `Ids` to retrieve
Return	`osid.topology.EdgeList`		the returned `Edge` list
Errors	NOT_FOUND		an `Id was` not found
	NULL_ARGUMENT		`edgeIds` is `null`
	OPERATION_FAILED		unable to complete request
	PERMISSION_DENIED		authorization failure
Compliance	`mandatory`		This method must be implemented.
Method	getEdgesByGenusType
Description	Gets an `EdgeList` corresponding to the given edge genus `Type` which does not include edges of genus types derived from the specified `Type`. In plenary mode, the returned list contains all known edges or an error results. Otherwise, the returned list may contain only those edges that are accessible through this session. In effective mode, edges are returned that are currently effective. In any effective mode, effective edges and those currently expired are returned.
Parameters	`osid.type.Type`	`edgeGenusType`	an edge genus type
Return	`osid.topology.EdgeList`		the returned `Edge` list
Errors	NULL_ARGUMENT		`edgeGenusType` is `null`
	OPERATION_FAILED		unable to complete request
	PERMISSION_DENIED		authorization failure
Compliance	`mandatory`		This method must be implemented.
Method	getEdgesByParentGenusType
Description	Gets an `EdgeList` corresponding to the given edge genus `Type` and include any additional edges with genus types derived from the specified `Type`. In plenary mode, the returned list contains all known edges or an error results. Otherwise, the returned list may contain only those edges that are accessible through this session. In effective mode, edges are returned that are currently effective. In any effective mode, effective edges and those currently expired are returned.
Parameters	`osid.type.Type`	`edgeGenusType`	an edge genus type
Return	`osid.topology.EdgeList`		the returned `Edge` list
Errors	NULL_ARGUMENT		`edgeGenusType` is `null`
	OPERATION_FAILED		unable to complete request
	PERMISSION_DENIED		authorization failure
Compliance	`mandatory`		This method must be implemented.
Method	getEdgesByRecordType
Description	Gets an `EdgeList` containing the given edge record `Type`. In plenary mode, the returned list contains all known edges or an error results. Otherwise, the returned list may contain only those edges that are accessible through this session. In effective mode, edges are returned that are currently effective. In any effective mode, effective edges and those currently expired are returned.
Parameters	`osid.type.Type`	`edgeRecordType`	an edge record type
Return	`osid.topology.EdgeList`		the returned `Edge` list
Errors	NULL_ARGUMENT		`edgeRecordType` is `null`
	OPERATION_FAILED		unable to complete request
	PERMISSION_DENIED		authorization failure
Compliance	`mandatory`		This method must be implemented.
Method	getEdgesOnDate
Description	Gets an `EdgeList` effective during the entire given date range inclusive but not confined to the date range. In plenary mode, the returned list contains all known edges or an error results. Otherwise, the returned list may contain only those edges that are accessible through this session. In effective mode, edges are returned that are currently effective. In any effective mode, effective edges and those currently expired are returned.
Parameters	`osid.calendaring.DateTime`	`from`	starting date
Parameters	`osid.calendaring.DateTime`	`to`	ending date
Return	`osid.topology.EdgeList`		the returned `Edge` list
Errors	INVALID_ARGUMENT		`from` is greater than `to`
	NULL_ARGUMENT		`from` or `to` is `null`
	OPERATION_FAILED		unable to complete request
	PERMISSION_DENIED		authorization failure
Compliance	`mandatory`		This method must be implemented.
Method	getEdgesByGenusTypeOnDate
Description	Gets an `EdgeList` of a genus type effective during the entire given date range inclusive but not confined to the date range. In plenary mode, the returned list contains all known edges or an error results. Otherwise, the returned list may contain only those edges that are accessible through this session. In effective mode, edges are returned that are currently effective. In any effective mode, effective edges and those currently expired are returned.
Parameters	`osid.type.Type`	`edgeGenusType`	an edge genus type
	`osid.calendaring.DateTime`	`from`	starting date
	`osid.calendaring.DateTime`	`to`	ending date
Return	`osid.topology.EdgeList`		the returned `Edge` list
Errors	INVALID_ARGUMENT		`from` is greater than `to`
	NULL_ARGUMENT		`edgeGenusType, from`, or `to` is `null`
	OPERATION_FAILED		unable to complete request
	PERMISSION_DENIED		authorization failure
Compliance	`mandatory`		This method must be implemented.
Method	getEdgesForSourceNode
Description	Gets an `EdgeList` corresponding to the given source node `Id`. In plenary mode, the returned list contains all of the edges corresponding to the given peer, including duplicates, or an error results if an edge is inaccessible. Otherwise, inaccessible `Edges` may be omitted from the list and may present the elements in any order including returning a unique set. In effective mode, edges are returned that are currently effective. In any effective mode, effective edges and those currently expired are returned.
Parameters	`osid.id.Id`	`sourceNodeId`	a node `Id`
Return	`osid.topology.EdgeList`		a list of edges
Errors	NULL_ARGUMENT		`sourceNodeId` is `null`
	OPERATION_FAILED		unable to complete request
	PERMISSION_DENIED		authorization failure
Compliance	`mandatory`		This method must be implemented.
Method	getEdgesForSourceNodeOnDate
Description	Gets an `EdgeList` with effective during the entire given date range inclusive but not confined to the date range. In plenary mode, the returned list contains all known edges or an error results. Otherwise, the returned list may contain only those edges that are accessible through this session. In effective mode, edges are returned that are currently effective. In any effective mode, effective edges and those currently expired are returned.
Parameters	`osid.id.Id`	`sourceNodeId`	a node `Id`
	`osid.calendaring.DateTime`	`from`	starting date
	`osid.calendaring.DateTime`	`to`	ending date
Return	`osid.topology.EdgeList`		a list of edges
Errors	INVALID_ARGUMENT		`from` is greater than `to`
	NULL_ARGUMENT		`sourceNodeId, from` or `to` is `null`
	OPERATION_FAILED		unable to complete request
	PERMISSION_DENIED		authorization failure
Compliance	`mandatory`		This method must be implemented.
Method	getEdgesByGenusTypeForSourceNode
Description	Gets an `EdgeList` corresponding to the given source node `Id` and edge genus `Type` and includes any genus types derived from the given genus type. In plenary mode, the returned list contains all of the edges corresponding to the given peer, including duplicates, or an error results if an edge is inaccessible. Otherwise, inaccessible `Edges` may be omitted from the list and may present the elements in any order including returning a unique set. In effective mode, edges are returned that are currently effective. In any effective mode, effective edges and those currently expired are returned.
Parameters	`osid.id.Id`	`sourceNodeId`	a node `Id`
Parameters	`osid.type.Type`	`edgeGenusType`	an edge genus type
Return	`osid.topology.EdgeList`		a list of edges
Errors	NULL_ARGUMENT		`sourceNodeId` or `edgeGenusType` is `null`
	OPERATION_FAILED		unable to complete request
	PERMISSION_DENIED		authorization failure
Compliance	`mandatory`		This method must be implemented.
Method	getEdgesByGenusTypeForSourceNodeOnDate
Description	Gets an `EdgeList` with the given genus type and effective during the entire given date range inclusive but not confined to the date range. In plenary mode, the returned list contains all known edges or an error results. Otherwise, the returned list may contain only those edges that are accessible through this session. In effective mode, edges are returned that are currently effective. In any effective mode, effective edges and those currently expired are returned.
Parameters	`osid.id.Id`	`nodeId`	a node `Id`
	`osid.type.Type`	`edgeGenusType`	an edge genus type
	`osid.calendaring.DateTime`	`from`	starting date
	`osid.calendaring.DateTime`	`to`	ending date
Return	`osid.topology.EdgeList`		a list of edges
Errors	INVALID_ARGUMENT		`from` is greater than `to`
	NULL_ARGUMENT		`sourceNodeId, edgeGenusType, from` or `to` is `null`
	OPERATION_FAILED		unable to complete request
	PERMISSION_DENIED		authorization failure
Compliance	`mandatory`		This method must be implemented.
Method	getEdgesForDestinationNode
Description	Gets an `EdgeList` corresponding to the given destination node `Id`. In plenary mode, the returned list contains all of the edges corresponding to the given peer, including duplicates, or an error results if an edge is inaccessible. Otherwise, inaccessible `Edges` may be omitted from the list and may present the elements in any order including returning a unique set. In effective mode, edges are returned that are currently effective. In any effective mode, effective edges and those currently expired are returned.
Parameters	`osid.id.Id`	`destinationNodeId`	a node `Id`
Return	`osid.topology.EdgeList`		a list of edges
Errors	NULL_ARGUMENT		`destinationNodeId` is `null`
	OPERATION_FAILED		unable to complete request
	PERMISSION_DENIED		authorization failure
Compliance	`mandatory`		This method must be implemented.
Method	getEdgesForDestinationNodeOnDate
Description	Gets an `EdgeList` effective during the entire given date range inclusive but not confined to the date range. In plenary mode, the returned list contains all known edges or an error results. Otherwise, the returned list may contain only those edges that are accessible through this session. In effective mode, edges are returned that are currently effective. In any effective mode, effective edges and those currently expired are returned.
Parameters	`osid.id.Id`	`destinationNodeId`	a node `Id`
	`osid.calendaring.DateTime`	`from`	starting date
	`osid.calendaring.DateTime`	`to`	ending date
Return	`osid.topology.EdgeList`		a list of edges
Errors	INVALID_ARGUMENT		`from` is greater than `to`
	NULL_ARGUMENT		`destinationNodeId, from` or `to` is `null`
	OPERATION_FAILED		unable to complete request
	PERMISSION_DENIED		authorization failure
Compliance	`mandatory`		This method must be implemented.
Method	getEdgesByGenusTypeForDestinationNode
Description	Gets an `EdgeList` corresponding to the given destination node `Id` and edge genus `Type` and includes any genus types derived from the given genus type. In plenary mode, the returned list contains all of the edges corresponding to the given peer, including duplicates, or an error results if an edge is inaccessible. Otherwise, inaccessible `Edges` may be omitted from the list and may present the elements in any order including returning a unique set. In effective mode, edges are returned that are currently effective. In any effective mode, effective edges and those currently expired are returned.
Parameters	`osid.id.Id`	`destinationNodeId`	a node `Id`
Parameters	`osid.type.Type`	`edgeGenusType`	an edge genus type
Return	`osid.topology.EdgeList`		a list of edges
Errors	NULL_ARGUMENT		`destinationNodeId` or `edgeGenusType` is `null`
	OPERATION_FAILED		unable to complete request
	PERMISSION_DENIED		authorization failure
Compliance	`mandatory`		This method must be implemented.
Method	getEdgesByGenusTypeForDestinationNodeOnDate
Description	Gets an `EdgeList` with the given genus type and effective during the entire given date range inclusive but not confined to the date range. In plenary mode, the returned list contains all known edges or an error results. Otherwise, the returned list may contain only those edges that are accessible through this session. In effective mode, edges are returned that are currently effective. In any effective mode, effective edges and those currently expired are returned.
Parameters	`osid.id.Id`	`destinationNodeId`	a node `Id`
	`osid.type.Type`	`edgeGenusType`	an edge genus type
	`osid.calendaring.DateTime`	`from`	starting date
	`osid.calendaring.DateTime`	`to`	ending date
Return	`osid.topology.EdgeList`		a list of edges
Errors	INVALID_ARGUMENT		`from` is greater than `to`
	NULL_ARGUMENT		`destinationNodeId, edgeGenusType, from` or `to` is `null`
	OPERATION_FAILED		unable to complete request
	PERMISSION_DENIED		authorization failure
Compliance	`mandatory`		This method must be implemented.
Method	getEdgesForNodes
Description	Gets an EdgeList corresponding to the given node `Ids`. In plenary mode, the returned list contains all of the edges corresponding to the given peer, including duplicates, or an error results if an edge is inaccessible. Otherwise, inaccessible `Edges` may be omitted from the list and may present the elements in any order including returning a unique set. In effective mode, edges are returned that are currently effective. In any effective mode, effective edges and those currently expired are returned.
Parameters	`osid.id.Id`	`sourceNodeId`	a node `Id`
Parameters	`osid.id.Id`	`destinationNodeId`	a node `Id`
Return	`osid.topology.EdgeList`		a list of edges
Errors	NULL_ARGUMENT		`sourceNodeId` or `destinationNodeId` is `null`
	OPERATION_FAILED		unable to complete request
	PERMISSION_DENIED		authorization failure
Compliance	`mandatory`		This method must be implemented.
Method	getEdgesForNodesOnDate
Description	Gets an `EdgeList` effective during the entire given date range inclusive but not confined to the date range. In plenary mode, the returned list contains all known edges or an error results. Otherwise, the returned list may contain only those edges that are accessible through this session. In effective mode, edges are returned that are currently effective. In any effective mode, effective edges and those currently expired are returned.
Parameters	`osid.id.Id`	`sourceNodeId`	a node `Id`
	`osid.id.Id`	`destinationNodeId`	a node `Id`
	`osid.calendaring.DateTime`	`from`	starting date
	`osid.calendaring.DateTime`	`to`	ending date
Return	`osid.topology.EdgeList`		a list of edges
Errors	INVALID_ARGUMENT		`from` is greater than `to`
	NULL_ARGUMENT		`sourceNodeId, destinationNodeId, from` or `to` is `null`
	OPERATION_FAILED		unable to complete request
	PERMISSION_DENIED		authorization failure
Compliance	`mandatory`		This method must be implemented.
Method	getEdgesByGenusTypeForNodes
Description	Gets an EdgeList corresponding to the given peer `Ids` and edge genus type and includes and genus types derived from the given genus type. In plenary mode, the returned list contains all of the edges corresponding to the given peer, including duplicates, or an error results if an edge is inaccessible. Otherwise, inaccessible `Edges` may be omitted from the list and may present the elements in any order including returning a unique set. In effective mode, edges are returned that are currently effective. In any effective mode, effective edges and those currently expired are returned.
Parameters	`osid.id.Id`	`sourceNodeId`	a node `Id`
	`osid.id.Id`	`destinationNodeId`	a node `Id`
	`osid.type.Type`	`edgeGenusType`	an edge genus type
Return	`osid.topology.EdgeList`		the edges
Errors	NULL_ARGUMENT		`sourceNodeId, destinationNodeId`, or `edgeGenusType` is `null`
	OPERATION_FAILED		unable to complete request
	PERMISSION_DENIED		authorization failure
Compliance	`mandatory`		This method must be implemented.
Method	getEdgesByGenusTypeForNodesOnDate
Description	Gets an `EdgeList` of the given genus type effective during the entire given date range inclusive but not confined to the date range. In plenary mode, the returned list contains all known edges or an error results. Otherwise, the returned list may contain only those edges that are accessible through this session. In effective mode, edges are returned that are currently effective. In any effective mode, effective edges and those currently expired are returned.
Parameters	`osid.id.Id`	`sourceNodeId`	a node `Id`
	`osid.id.Id`	`destinationNodeId`	a node `Id`
	`osid.type.Type`	`edgeGenusType`	an edge genus type
	`osid.calendaring.DateTime`	`from`	starting date
	`osid.calendaring.DateTime`	`to`	ending date
Return	`osid.topology.EdgeList`		a list of edges
Errors	INVALID_ARGUMENT		`from` is greater than `to`
	NULL_ARGUMENT		`sourceNodeId, destinationNodeId, edgeGenusType, from` or `to` is `null`
	OPERATION_FAILED		unable to complete request
	PERMISSION_DENIED		authorization failure
Compliance	`mandatory`		This method must be implemented.
Method	getEdges
Description	Gets all `Edges`. In plenary mode, the returned list contains all known edges or an error results. Otherwise, the returned list may contain only those edges that are accessible through this session. In effective mode, edges are returned that are currently effective. In any effective mode, effective edges and those currently expired are returned.
Return	`osid.topology.EdgeList`		a list of `Edges`
Errors	OPERATION_FAILED		unable to complete request
Errors	PERMISSION_DENIED		authorization failure
Compliance	`mandatory`		This method must be implemented.