Group


1   // You can redistribute this software and/or modify it under the terms of
2   // the Ozone Core License version 1 published by ozone-db.org.
3   //
4   // The original code and portions created by SMB are
5   // Copyright (C) 1997-@year@ by SMB GmbH. All rights reserved.
6   //
7   // $Id: Group.java,v 1.2 2002/08/27 08:32:25 per_nyfelt Exp $
8   
9   package org.ozoneDB.core;
10  
11  import org.ozoneDB.DxLib.*;
12  import java.io.*;
13  
14  
15  /**
16   * This class represent an ozone user group. A group can be identified by
17   * its name.
18   *
19   *
20   * @author <a HREF="http://www.softwarebuero.de/">SMB</a>
21   * @version $Revision: 1.2 $Date: 2002/08/27 08:32:25 $
22   * @see User
23   * @see UserManager
24   */
25  public final class Group extends DxObject implements Externalizable {
26  
27      protected final static long serialVersionUID = 2;
28      protected final static byte subSerialVersionUID = 1;
29  
30      protected String   name;
31  
32      protected int id;
33  
34      protected DxSet users;
35  
36  
37      public Group() {
38          users = new DxHashSet();
39      }
40  
41  
42      public Group( String   _name, int _id ) {
43          name = _name;
44          id = _id;
45          users = new DxHashSet();
46      }
47  
48  
49      public String   name() {
50          return name;
51      }
52  
53  
54      public Integer   id() {
55          return new Integer  ( id );
56      }
57  
58  
59      public DxCollection userIDs() {
60          return users;
61      }
62  
63  
64      public boolean addUser( User user ) {
65          return users.add( new Integer  ( user.id ) );
66      }
67  
68  
69      public boolean containsUser( User user ) {
70          return users.contains( new Integer  ( user.id ) );
71      }
72  
73  
74      public boolean removeUser( User user ) {
75          return users.remove( new Integer  ( user.id ) );
76      }
77  
78  
79      public boolean isEmpty() {
80          return users.isEmpty();
81      }
82  
83  
84      public int usersCount() {
85          return users.count();
86      }
87  
88  
89      public boolean equals( Object   obj ) {
90          if (this == obj) {
91              return true;
92          }
93          if (obj instanceof Group && obj != null) {
94              return id == ((Group)obj).id;
95          }
96          return false;
97      }
98  
99  
100     public Object   clone() {
101         Group group = (Group)super.clone();
102         group.name = name;
103         group.id = -1;
104         return group;
105     }
106 
107 
108     public String   toString() {
109         return new String  ( "Group '" + name.toString() + "'" );
110     }
111 
112 
113     public void writeExternal( ObjectOutput out ) throws IOException {
114         out.writeByte( subSerialVersionUID );
115         out.writeObject( name );
116         out.writeInt( id );
117         out.writeObject( users );
118     }
119 
120 
121     public synchronized void readExternal( ObjectInput in ) throws IOException, ClassNotFoundException   {
122         byte streamVersionUID = in.readByte();
123         name = (String  )in.readObject();
124         id = in.readInt();
125         users = (DxSet)in.readObject();
126     }
127 
128 }
129
A to Z: JavaDoc & Examples Daily Java News & Articles Open Source Projects Open Source Codes Free Computer Books Remove Frame
Popular Tags