Element


1   /***
2    * Jonathan: an Open Distributed Processing Environment 
3    * Copyright (C) 2000 France Telecom R&D
4    * Copyright (C) 2001 Kelua SA
5    * 
6    * This library is free software; you can redistribute it and/or
7    * modify it under the terms of the GNU Lesser General Public
8    * License as published by the Free Software Foundation; either
9    * version 2 of the License, or (at your option) any later version.
10   * 
11   * This library is distributed in the hope that it will be useful,
12   * but WITHOUT ANY WARRANTY; without even the implied warranty of
13   * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
14   * Lesser General Public License for more details.
15   * 
16   * You should have received a copy of the GNU Lesser General Public
17   * License along with this library; if not, write to the Free Software
18   * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
19   * 
20   * Release: 3.0
21   *
22   * Contact: jonathan@objectweb.org
23   *
24   * Author: Fabien Delpiano
25   * 
26   */
27  
28  package org.objectweb.jonathan.apis.kernel;
29  
30  /** 
31   * The Element interface represents an element in a context.
32   */
33  public interface Element {
34  
35     /** 
36      * Returns the (local) name of the element, in the context it belongs to.
37      * @return the (local) name of the element, in the context it belongs to.
38      */
39     String   getName();
40  
41     /** 
42      * Returns the component contained in the target element.
43      * @return the component contained in the target element.
44      */
45     Component  getComponent();
46  
47     /** 
48      * Returns the type of the target element, as a Class.
49      * @return the type of the target element, as a Class.
50      */
51     Class    getType();
52  
53     /** 
54      * Returns the value of the target element, if its type is an object reference
55      * type.
56      * <p>
57      * If the target element is of an integral type, 
58      * {@link Context#NO_VALUE NO_VALUE}} is returned.
59      *
60      * @return the value of the target element.
61      */
62     Object   getValue();
63  
64     /** 
65      * Returns the value of the target element, if its class is an integer class.
66      * <p>
67      * If the target element has an object reference type, Integer.MAX_VALUE is 
68      * returned.
69      *
70      * @return the value of the target element.
71      */
72     int getIntValue();
73  
74     /** 
75      * Returns the context containing the target element, if any, null otherwise.
76      * @return the context containing the target element, if any, null otherwise.
77      */
78     Component getContainer();
79  }
80
A to Z: JavaDoc & Examples Daily Java News & Articles Open Source Projects Open Source Codes Free Computer Books Remove Frame
Popular Tags