OSID - osid.acknowledgement.BillingHierarchyDesignSession Service Interface Definition

Interface	osid.acknowledgement.BillingHierarchyDesignSession
Implements	`osid.OsidSession`
Description	This session manages a hierarchy of billings. Billings may be organized into a hierarchy for organizing or federating. A parent `Billing` includes all of the credits of its children such that a single root node contains all of the credits of the federation.
Method	getBillingHierarchyId
Description	Gets the hierarchy `Id` associated with this session.
Return	`osid.id.Id`		the hierarchy `Id` associated with this session
Compliance	`mandatory`		This method must be implemented.
Method	getBillingHierarchy
Description	Gets the hierarchy associated with this session.
Return	`osid.hierarchy.Hierarchy`		the hierarchy associated with this session
Errors	OPERATION_FAILED		unable to complete request
Errors	PERMISSION_DENIED		authorization failure
Compliance	`mandatory`		This method must be implemented.
Method	canModifyBillingHierarchy
Description	Tests if this user can change the hierarchy. A return of true does not guarantee successful authorization. A return of false indicates that it is known performing any update will result in a `PERMISSION_DENIED.` This is intended as a hint to an application that may opt not to offer these operations to an unauthorized user.
Return	`boolean`		`false` if changing this hierarchy is not authorized, `true` otherwise
Compliance	`mandatory`		This method must be implemented.
Method	addRootBilling
Description	Adds a root billing.
Parameters	`osid.id.Id`	`billingId`	the `Id` of a billing
Errors	ALREADY_EXISTS		`billingId` is already in hierarchy
	NOT_FOUND		`billingId` is not found
	NULL_ARGUMENT		`billingId` is `null`
	OPERATION_FAILED		unable to complete request
	PERMISSION_DENIED		authorization failure
Compliance	`mandatory`		This method must be implemented.
Method	removeRootBilling
Description	Removes a root billing.
Parameters	`osid.id.Id`	`billingId`	the `Id` of a billing
Errors	NOT_FOUND		`billingId` is not found
	NULL_ARGUMENT		`billingId` is `null`
	OPERATION_FAILED		unable to complete request
	PERMISSION_DENIED		authorization failure
Compliance	`mandatory`		This method must be implemented.
Method	addChildBilling
Description	Adds a child to a billing.
Parameters	`osid.id.Id`	`billingId`	the `Id` of a billing
Parameters	`osid.id.Id`	`childId`	the `Id` of the new child
Errors	ALREADY_EXISTS		`billingId` is already a parent of `childId`
	NOT_FOUND		`billingId` or `childId` not found
	NULL_ARGUMENT		`billingId` or `childId` is `null`
	OPERATION_FAILED		unable to complete request
	PERMISSION_DENIED		authorization failure
Compliance	`mandatory`		This method must be implemented.
Method	removeChildBilling
Description	Removes a child from a billing.
Parameters	`osid.id.Id`	`billingId`	the `Id` of a billing
Parameters	`osid.id.Id`	`childId`	the `Id` of the new child
Errors	NOT_FOUND		`billingId` not a parent of `childId`
	NULL_ARGUMENT		`billingId` or `childId` is `null`
	OPERATION_FAILED		unable to complete request
	PERMISSION_DENIED		authorization failure
Compliance	`mandatory`		This method must be implemented.
Method	removeChildBillings
Description	Removes all children from a billing.
Parameters	`osid.id.Id`	`billingId`	the `Id` of a billing
Errors	NOT_FOUND		`billingId` is not found
	NULL_ARGUMENT		`billingId` is `null`
	OPERATION_FAILED		unable to complete request
	PERMISSION_DENIED		authorization failure
Compliance	`mandatory`		This method must be implemented.