-
Notifications
You must be signed in to change notification settings - Fork 4
Expand file tree
/
Copy pathGroup.java
More file actions
87 lines (78 loc) · 2.15 KB
/
Group.java
File metadata and controls
87 lines (78 loc) · 2.15 KB
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
/*
* Copyright (c) 1996, 2013, Oracle and/or its affiliates. All rights reserved.
* ORACLE PROPRIETARY/CONFIDENTIAL. Use is subject to license terms.
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*/
package java.security.acl;
import java.util.Enumeration;
import java.security.Principal;
/**
* This interface is used to represent a group of principals. (A principal
* represents an entity such as an individual user or a company). <p>
*
* Note that Group extends Principal. Thus, either a Principal or a Group can
* be passed as an argument to methods containing a Principal parameter. For
* example, you can add either a Principal or a Group to a Group object by
* calling the object's {@code addMember} method, passing it the
* Principal or Group.
*
* @author Satish Dharmaraj
*/
public interface Group extends Principal {
/**
* Adds the specified member to the group.
*
* @param user the principal to add to this group.
*
* @return true if the member was successfully added,
* false if the principal was already a member.
*/
public boolean addMember(Principal user);
/**
* Removes the specified member from the group.
*
* @param user the principal to remove from this group.
*
* @return true if the principal was removed, or
* false if the principal was not a member.
*/
public boolean removeMember(Principal user);
/**
* Returns true if the passed principal is a member of the group.
* This method does a recursive search, so if a principal belongs to a
* group which is a member of this group, true is returned.
*
* @param member the principal whose membership is to be checked.
*
* @return true if the principal is a member of this group,
* false otherwise.
*/
public boolean isMember(Principal member);
/**
* Returns an enumeration of the members in the group.
* The returned objects can be instances of either Principal
* or Group (which is a subclass of Principal).
*
* @return an enumeration of the group members.
*/
public Enumeration<? extends Principal> members();
}