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Java > Open Source Codes > com > caucho > config > core > ResinChoose


1 /*
2  * Copyright (c) 1998-2006 Caucho Technology -- all rights reserved
3  *
4  * This file is part of Resin(R) Open Source
5  *
6  * Each copy or derived work must preserve the copyright notice and this
7  * notice unmodified.
8  *
9  * Resin Open Source is free software; you can redistribute it and/or modify
10  * it under the terms of the GNU General Public License as published by
11  * the Free Software Foundation; either version 2 of the License, or
12  * (at your option) any later version.
13  *
14  * Resin Open Source is distributed in the hope that it will be useful,
15  * but WITHOUT ANY WARRANTY; without even the implied warranty of
16  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE, or any warranty
17  * of NON-INFRINGEMENT. See the GNU General Public License for more
18  * details.
19  *
20  * You should have received a copy of the GNU General Public License
21  * along with Resin Open Source; if not, write to the
22  * Free SoftwareFoundation, Inc.
23  * 59 Temple Place, Suite 330
24  * Boston, MA 02111-1307 USA
25  *
26  * @author Scott Ferguson
27  */
28
29 package com.caucho.config.core;
30
31 import com.caucho.util.L10N;
32
33 import javax.annotation.PostConstruct;
34 import java.util.ArrayList JavaDoc;
35
36 /**
37  * Executes code when an expression is valid.
38  */
39 public class ResinChoose extends ResinControl {
40   private static final L10N L = new L10N(ResinWhen.class);
41
42   private ArrayList JavaDoc<ResinWhen> _whenList = new ArrayList JavaDoc<ResinWhen>();
43   private ResinWhen _otherwise;
44   
45   /**
46    * Adds a new when clause.
47    */
48   public void addWhen(ResinWhen when)
49   {
50     _whenList.add(when);
51   }
52   
53   /**
54    * Adds the otherwise clause.
55    */
56   public void setOtherwise(ResinWhen when)
57   {
58     _otherwise = when;
59     _otherwise.setTest(true);
60   }
61
62   @PostConstruct
63   public void init()
64     throws Throwable JavaDoc
65   {
66     Object JavaDoc object = getObject();
67     
68     if (object == null)
69       return;
70     
71     for (int i = 0; i < _whenList.size(); i++) {
72       ResinWhen when = _whenList.get(i);
73
74       if (when.configure(object))
75     return;
76     }
77
78     if (_otherwise != null)
79       _otherwise.configure(object);
80   }
81 }
82
83
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