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Class sun.security.acl.AclEntryImpl 

java.lang.Object
   |
   +----sun.security.acl.AclEntryImpl
public class AclEntryImpl
extends Object
implements AclEntry
This is a class that describes one entry that associates users or groups with permissions in the ACL. The entry may be used as a way of granting or denying permissions.

Constructor Index

o AclEntryImpl()
Construct a null ACL entry
o AclEntryImpl(Principal)
Construct an ACL entry that associates a user with permissions in the ACL.

Method Index

o addPermission(Permission)
A principal or a group can be associated with multiple permissions.
o checkPermission(Permission)
Checks if the passed permission is part of the allowed permission set in this entry.
o clone()
Clones an AclEntry.
o getPrincipal()
Return the Principal associated in this ACL entry.
o isNegative()
Returns true if this is a negative ACL.
o permissions()
return an enumeration of the permissions in this ACL entry.
o removePermission(Permission)
The method disassociates the permission from the Principal or the Group in this ACL entry.
o setNegativePermissions()
This method sets the ACL to have negative permissions.
o setPrincipal(Principal)
Sets the principal in the entity.
o toString()
Return a string representation of the contents of the ACL entry.

Constructors

o AclEntryImpl 
 public AclEntryImpl(Principal user)
Construct an ACL entry that associates a user with permissions in the ACL.

Parameters:
user - The user that is associated with this entry.
o AclEntryImpl 
 public AclEntryImpl()
Construct a null ACL entry

Methods

o setPrincipal 
 public boolean setPrincipal(Principal user)
Sets the principal in the entity. If a group or a principal had already been set, a false value is returned, otherwise a true value is returned.

Parameters:
user - The user that is associated with this entry.
Returns:
true if the principal is set, false if there is one already.
o setNegativePermissions 
 public void setNegativePermissions()
This method sets the ACL to have negative permissions. That is the user or group is denied the permission set specified in the entry.

o isNegative 
 public boolean isNegative()
Returns true if this is a negative ACL.

o addPermission 
 public boolean addPermission(Permission permission)
A principal or a group can be associated with multiple permissions. This method adds a permission to the ACL entry.

Parameters:
permission - The permission to be associated with the principal or the group in the entry.
Returns:
true if the permission was added, false if the permission was already part of the permission set.
o removePermission 
 public boolean removePermission(Permission permission)
The method disassociates the permission from the Principal or the Group in this ACL entry.

Parameters:
permission - The permission to be disassociated with the principal or the group in the entry.
Returns:
true if the permission is removed, false if the permission is not part of the permission set.
o checkPermission 
 public boolean checkPermission(Permission permission)
Checks if the passed permission is part of the allowed permission set in this entry.

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

o toString 
 public String toString()
Return a string representation of the contents of the ACL entry.

Overrides:
toString in class Object
o clone 
 public synchronized Object clone()
Clones an AclEntry.

Overrides:
clone in class Object
o getPrincipal 
 public Principal getPrincipal()
Return the Principal associated in this ACL entry. The method returns null if the entry uses a group instead of a principal. 

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