OSID - osid.blogging.EntryBlogAssignmentSession Service Interface Definition

Interface	osid.blogging.EntryBlogAssignmentSession
Implements	`osid.OsidSession`
Used By	`osid.blogging.BloggingManager`
Used By	`osid.blogging.BloggingProxyManager`
Description	This session provides methods to re-assign `Entries` to `Blogs`. An `Entry` may map to multiple `Blog` objects and removing the last reference to an `Entry` is the equivalent of deleting it. Each `Blog` may have its own authorizations governing who is allowed to operate on it. Moving or adding a reference of a `Entry` to another `Blog` is not a copy operation (eg: does not change its `Id`).
Method	canAssignEntries
Description	Tests if this user can alter entry/blog mappings. 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.
Return	`boolean`		`false` if mapping is not authorized, `true` otherwise
Compliance	`mandatory`		This method must be implemented.
Method	canAssignEntriesToBlog
Description	Tests if this user can alter entry/blog mappings. 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`	`blogId`	the `Id` of the `Blog`
Return	`boolean`		`false` if mapping is not authorized, `true` otherwise
Errors	NULL_ARGUMENT		`blogId` is `null`
Compliance	`mandatory`		This method must be implemented.
Method	getAssignableBlogIds
Description	Gets a list of blogs including and under the given blogs node in which any entry can be assigned.
Parameters	`osid.id.Id`	`blogId`	the `Id` of the `Blog`
Return	`osid.id.IdList`		list of assignable blog `Ids`
Errors	NULL_ARGUMENT		`blogId` is `null`
Errors	OPERATION_FAILED		unable to complete request
Compliance	`mandatory`		This method must be implemented.
Method	getAssignableBlogIdsForEntry
Description	Gets a list of blogs including and under the given blog node in which a specific entry can be assigned.
Parameters	`osid.id.Id`	`blogId`	the `Id` of the `Blog`
Parameters	`osid.id.Id`	`entryId`	the `Id` of the `Entry`
Return	`osid.id.IdList`		list of assignable blog `Ids`
Errors	NULL_ARGUMENT		`blogId` or `entryId` is `null`
Errors	OPERATION_FAILED		unable to complete request
Compliance	`mandatory`		This method must be implemented.
Method	assignEntryToBlog
Description	Adds an existing `Entry` to a `Blog`.
Parameters	`osid.id.Id`	`entryId`	the `Id` of the `Entry`
Parameters	`osid.id.Id`	`blogId`	the `Id` of the `Blog`
Errors	ALREADY_EXISTS		`entryId` is already assigned to `blogId`
	NOT_FOUND		`entryId` or `blogId` not found
	NULL_ARGUMENT		`entryId` or `blogId` is `null`
	OPERATION_FAILED		unable to complete request
	PERMISSION_DENIED		authorization failure
Compliance	`mandatory`		This method must be implemented.
Method	unassignEntryFromBlog
Description	Removes an `Entry` from a `Blog` .
Parameters	`osid.id.Id`	`entryId`	the `Id` of the `Entry`
Parameters	`osid.id.Id`	`blogId`	the `Id` of the `Blog`
Errors	NOT_FOUND		`entryId` or `blogId` not found or `entryId` not assigned to `blogId`
	NULL_ARGUMENT		`entryId` or `blogId` is `null`
	OPERATION_FAILED		unable to complete request
	PERMISSION_DENIED		authorization failure
Compliance	`mandatory`		This method must be implemented.
Method	reassignEntryToBlog
Description	Moves an `Entry` from one `Blog` to another. Mappings to other `Blogs` are unaffected.
Parameters	`osid.id.Id`	`entryId`	the `Id` of the `Entry`
	`osid.id.Id`	`fromBlogId`	the `Id` of the current `Blog`
	`osid.id.Id`	`toBlogId`	the `Id` of the destination `Blog`
Errors	ALREADY_EXISTS		`entryId` already assigned to `toBlogId`
	NOT_FOUND		`entryId, fromBlogId`, or `toBlogId` not found or `entryId` not mapped to `fromBlogId`
	NULL_ARGUMENT		`entryId, fromBlogId`, or `toBlogId` is `null`
	OPERATION_FAILED		unable to complete request
	PERMISSION_DENIED		authorization failure
Compliance	`mandatory`		This method must be implemented.