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Java > Open Source Codes > org > continuent > sequoia > console > text > commands > History


1 /**
2  * Sequoia: Database clustering technology.
3  * Copyright (C) 2002-2004 French National Institute For Research In Computer
4  * Science And Control (INRIA).
5  * Contact: sequoia@continuent.org
6  *
7  * Licensed under the Apache License, Version 2.0 (the "License");
8  * you may not use this file except in compliance with the License.
9  * You may obtain a copy of the License at
10  *
11  * http://www.apache.org/licenses/LICENSE-2.0
12  *
13  * Unless required by applicable law or agreed to in writing, software
14  * distributed under the License is distributed on an "AS IS" BASIS,
15  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
16  * See the License for the specific language governing permissions and
17  * limitations under the License.
18  *
19  * Initial developer(s): Nicolas Modrzyk.
20  * Contributor(s): ______________________.
21  */
22
23 package org.continuent.sequoia.console.text.commands;
24
25 import java.util.List JavaDoc;
26 import java.util.StringTokenizer JavaDoc;
27
28 import org.continuent.sequoia.common.i18n.ConsoleTranslate;
29 import org.continuent.sequoia.console.text.module.AbstractConsoleModule;
30
31 /**
32  * This class defines a History
33  *
34  * @author <a HREF="mailto:Nicolas.Modrzyk@inrialpes.fr">Nicolas Modrzyk </a>
35  * @version 1.0
36  */
37 public class History extends ConsoleCommand
38 {
39
40   /**
41    * Creates a new <code>History</code> object
42    *
43    * @param module module that owns this commands
44    */
45   public History(AbstractConsoleModule module)
46   {
47     super(module);
48   }
49
50   /**
51    * @see org.continuent.sequoia.console.text.commands.ConsoleCommand#parse(java.lang.String)
52    */
53   public void parse(String JavaDoc commandText) throws Exception JavaDoc
54   {
55     List JavaDoc list = module.getConsole().getHistory();
56     StringTokenizer JavaDoc st = new StringTokenizer JavaDoc(commandText);
57     if (st.countTokens() == 0)
58     {
59       for (int i = 0; i < list.size(); i++)
60       {
61         Object JavaDoc o = list.get(i);
62         console.println("" + i + "\t" + o); //$NON-NLS-1$ //$NON-NLS-2$
63 }
64     }
65     else
66     {
67       int line = Integer.parseInt(st.nextToken());
68       console.printInfo((String JavaDoc) list.get(line));
69       module.handleCommandLine((String JavaDoc) list.get(line),
70           module.getHashCommands());
71     }
72   }
73
74   /**
75    * @see org.continuent.sequoia.console.text.commands.ConsoleCommand#getCommandName()
76    */
77   public String JavaDoc getCommandName()
78   {
79     return "history"; //$NON-NLS-1$
80 }
81
82   /**
83    * @see org.continuent.sequoia.console.text.commands.ConsoleCommand#getCommandDescription()
84    */
85   public String JavaDoc getCommandDescription()
86   {
87     return ConsoleTranslate.get("console.command.history"); //$NON-NLS-1$
88 }
89
90   /**
91    * @see org.continuent.sequoia.console.text.commands.ConsoleCommand#getCommandParameters()
92    */
93   public String JavaDoc getCommandParameters()
94   {
95     return "[<command index>]"; //$NON-NLS-1$
96 }
97 }
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