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Java > Open Source Codes > org > jboss > console > twiddle > command > AbstractCommand


1 /*
2   * JBoss, Home of Professional Open Source
3   * Copyright 2005, JBoss Inc., and individual contributors as indicated
4   * by the @authors tag. See the copyright.txt in the distribution for a
5   * full listing of individual contributors.
6   *
7   * This is free software; you can redistribute it and/or modify it
8   * under the terms of the GNU Lesser General Public License as
9   * published by the Free Software Foundation; either version 2.1 of
10   * the License, or (at your option) any later version.
11   *
12   * This software is distributed in the hope that it will be useful,
13   * but WITHOUT ANY WARRANTY; without even the implied warranty of
14   * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15   * Lesser General Public License for more details.
16   *
17   * You should have received a copy of the GNU Lesser General Public
18   * License along with this software; if not, write to the Free
19   * Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
20   * 02110-1301 USA, or see the FSF site: http://www.fsf.org.
21   */
22 package org.jboss.console.twiddle.command;
23
24 import org.jboss.util.NullArgumentException;
25
26 import org.jboss.logging.Logger;
27
28 /**
29  * An abstract command.
30  *
31  * @version <tt>$Revision: 37459 $</tt>
32  * @author <a HREF="mailto:jason@planet57.com">Jason Dillon</a>
33  * @author Scott.Stark@jboss.org
34  */
35 public abstract class AbstractCommand
36    implements Command
37 {
38    protected Logger log = Logger.getLogger(getClass());
39
40    protected final String JavaDoc desc;
41    
42    protected final String JavaDoc name;
43
44    protected CommandContext context;
45
46    protected AbstractCommand(final String JavaDoc name, final String JavaDoc desc)
47    {
48       this.name = name;
49       this.desc = desc;
50    }
51    
52    public String JavaDoc getName()
53    {
54       return name;
55    }
56
57    public String JavaDoc getDescription()
58    {
59       return desc;
60    }
61
62    public void setCommandContext(final CommandContext context)
63    {
64       if (context == null)
65          throw new NullArgumentException("context");
66       
67       this.context = context;
68    }
69
70    public void unsetCommandContext()
71    {
72       this.context = null;
73    }
74    
75    /**
76     * Return a cloned copy of this command.
77     *
78     * @return Cloned command.
79     */
80    public Object JavaDoc clone()
81    {
82       try
83       {
84          return super.clone();
85       }
86       catch (CloneNotSupportedException JavaDoc e)
87       {
88          throw new InternalError JavaDoc();
89       }
90    }
91 }
92
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