Package java.security.acl

Interface Owner

All Known Subinterfaces:

Acl

public interface Owner

The interface to manage owners of objects that require ownership.

See Also:

Acl, Principal

Method Summary

Modifier and Type	Method	Description
boolean	addOwner(Principal caller, Principal owner)	Adds a principal to the list of owners.
boolean	deleteOwner(Principal caller, Principal owner)	Removes a principal from the list of owners.
boolean	isOwner(Principal owner)	Checks whether the specified principal is an owner of this object.

Method Detail

addOwner

boolean addOwner(Principal caller,
                 Principal owner)
          throws NotOwnerException

Adds a principal to the list of owners.

Parameters:

caller - the invoking principal.

owner - the owner to added.

Returns:

true if the owner was added, false if it was already an owner.

Throws:

NotOwnerException - if the invoking principal is not an owner.

deleteOwner

boolean deleteOwner(Principal caller,
                    Principal owner)
             throws NotOwnerException,
                    LastOwnerException

Removes a principal from the list of owners.

Parameters:

caller - the invoking principal.

owner - the owner to be removed.

Returns:

true if the owner was removed, false if it was not an owner.

Throws:

NotOwnerException - if the invoking principal is not an owner.

LastOwnerException - if the owner to be removed is the last owner and hence removing it would make this object owner-less.

isOwner

boolean isOwner(Principal owner)

Checks whether the specified principal is an owner of this object.

Parameters:

owner - the principal to check.

Returns:

true if the specified principal is an owner, otherwise false.