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Class jnfs.security.acl.AclEntryImpl 

java.lang.Object
   |
   +----jnfs.security.acl.AclEntryImpl
public class AclEntryImpl
extends Object
implements AclEntry, Serializable
An implementation of an AclEntry.

Version:
$Id: AclEntryImpl.java,v 1.7 1997/05/20 19:17:02 mjr Exp $
Author:
Michael John Radwin
See Also:
AclEntry

Variable Index

o negative
o permissions
o principal

Constructor Index

o AclEntryImpl()
Constructs an AclEntry with no principal.
o AclEntryImpl(Principal)
Constructs an AclEntry with the specified principal.

Method Index

o addPermission(Permission)
Adds the specified permission to this ACL entry.
o checkPermission(Permission)
Checks if the specified permission is part of the permission set in this entry.
o clone()
Clones this ACL entry.
o getPrincipal()
Returns the principal for which permissions are granted or denied by this ACL entry.
o isNegative()
Returns true if this is a negative ACL entry (one denying the associated principal the set of permissions in the entry), false otherwise.
o permissions()
Returns an enumeration of the permissions in this ACL entry.
o removePermission(Permission)
Removes the specified permission from this ACL entry.
o setNegativePermissions()
Sets this ACL entry to be a negative one.
o setPrincipal(Principal)
Specifies the principal for which permissions are granted or denied by this ACL entry.
o toString()
Returns a string representation of the contents of this ACL entry.

Variables

o principal 
 protected Principal principal
o negative 
 protected boolean negative
o permissions 
 protected Vector permissions

Constructors

o AclEntryImpl 
 public AclEntryImpl()
Constructs an AclEntry with no principal.

o AclEntryImpl 
 public AclEntryImpl(Principal principal)
Constructs an AclEntry with the specified principal.

Methods

o setPrincipal 
 public boolean setPrincipal(Principal user)
Specifies the principal for which permissions are granted or denied by this ACL entry. If a principal was already set for this ACL entry, false is returned, otherwise true is returned.

Parameters:
user - the principal to be set for this entry.
Returns:
true if the principal is set, false if there was already a principal set for this entry.
o getPrincipal 
 public Principal getPrincipal()
Returns the principal for which permissions are granted or denied by this ACL entry. Returns null if there is no principal set for this entry yet.

Returns:
the principal associated with this entry.
o setNegativePermissions 
 public void setNegativePermissions()
Sets this ACL entry to be a negative one. That is, the associated principal (e.g., a user or a group) will be denied the permission set specified in the entry. Note: ACL entries are by default positive. An entry becomes a negative entry only if this setNegativePermissions method is called on it.

o isNegative 
 public boolean isNegative()
Returns true if this is a negative ACL entry (one denying the associated principal the set of permissions in the entry), false otherwise.

Returns:
true if this is a negative ACL entry, false if it's not.
o addPermission 
 public boolean addPermission(Permission permission)
Adds the specified permission to this ACL entry. Note: An entry can have multiple permissions.

Parameters:
permission - the permission to be associated with the principal in this entry.
Returns:
true if the permission was added, false if the permission was already part of this entry's permission set.
o removePermission 
 public boolean removePermission(Permission permission)
Removes the specified permission from this ACL entry.

Parameters:
permission - the permission to be removed from this entry.
Returns:
true if the permission is removed, false if the permission was not part of this entry's permission set.
o checkPermission 
 public boolean checkPermission(Permission permission)
Checks if the specified permission is part of the permission set in this entry.

Parameters:
permission - the permission to be checked for.
Returns:
true if the permission is part of the permission set in this entry, false otherwise.
o permissions 
 public Enumeration permissions()
Returns an enumeration of the permissions in this ACL entry.

Returns:
an enumeration of the permissions in this ACL entry.
o toString 
 public String toString()
Returns a string representation of the contents of this ACL entry.

Returns:
a string representation of the contents.
Overrides:
toString in class Object
o clone 
 public Object clone()
Clones this ACL entry.

Returns:
a clone of this ACL entry.
Overrides:
clone in class Object 
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