OSID - osid.resource.GroupAssignmentSession Service Interface Definition

Interface	osid.resource.GroupAssignmentSession
Implements	`osid.OsidSession`
Used By	`osid.resource.ResourceManager`
Used By	`osid.resource.ResourceProxyManager`
Description	This session provides methods to re-assign `Resources` to group `Resources`.
Method	getBinId
Description	Gets the `Bin` `Id` associated with this session.
Return	`osid.id.Id`		the `Bin Id` associated with this session
Compliance	`mandatory`		This method must be implemented.
Method	getBin
Description	Gets the `Bin` associated with this session.
Return	`osid.resource.Bin`		the `Bin` associated with this session
Errors	OPERATION_FAILED		unable to complete request
Errors	PERMISSION_DENIED		authorization failure
Compliance	`mandatory`		This method must be implemented.
Method	canAssignResources
Description	Tests if this user can change resource group mappings. 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 wish to offer assignment operations.
Return	`boolean`		`false` if mapping is not authorized, `true` otherwise
Compliance	`mandatory`		This method must be implemented.
Method	canAssignResourcesToGroup
Description	Tests if this user can assign members to the given group. A return of true does not guarantee successful authorization. A return of false indicates that it is known mapping 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 assignment operations to unauthorized users.
Parameters	`osid.id.Id`	`resourceId`	the `Id` of the `Resource`
Return	`boolean`		`false` if mapping is not authorized, `true` otherwise
Errors	NULL_ARGUMENT		`resourceId` is `null`
Compliance	`mandatory`		This method must be implemented.
Method	assignResourceToGroup
Description	Adds an existing `Resource` to a `Resource` group.
Parameters	`osid.id.Id`	`resourceId`	the `Id` of the `Resource`
Parameters	`osid.id.Id`	`resourceGroupId`	the `Id` of the `Resource` group
Errors	ALREADY_EXISTS		`resourceId` is already part of `resourceGroupId`
	NOT_FOUND		`resourceId` or `resourceGroupId` not found
	NULL_ARGUMENT		`resourceId` or `resourceGroupId` is `null`
	OPERATION_FAILED		unable to complete request
	PERMISSION_DENIED		authorization failure
Compliance	`mandatory`		This method must be implemented.
Method	unassignResourceFromGroup
Description	Removes a `Resource` from a `Resource` group.
Parameters	`osid.id.Id`	`resourceId`	the `Id` of the `Resource`
Parameters	`osid.id.Id`	`resourceGroupId`	the `Id` of the `Repository`
Errors	NOT_FOUND		`resourceId or resourceGroupId` not found or `resourceId` not part of `resourceGroupId`
	NULL_ARGUMENT		`resourceId or resourceGroupId is null`
	OPERATION_FAILED		unable to complete request
	PERMISSION_DENIED		authorization failure
Compliance	`mandatory`		This method must be implemented.