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Java > Open Source Codes > org > dbforms > event > eventtype > DbFormsEventTypeStrategy


1 /*
2  * $Header: /cvsroot/jdbforms/dbforms/src/org/dbforms/event/eventtype/DbFormsEventTypeStrategy.java,v 1.4 2004/08/18 12:26:04 hkollmann Exp $
3  * $Revision: 1.4 $
4  * $Date: 2004/08/18 12:26:04 $
5  *
6  * DbForms - a Rapid Application Development Framework
7  * Copyright (C) 2001 Joachim Peer <joepeer@excite.com>
8  *
9  * This library is free software; you can redistribute it and/or
10  * modify it under the terms of the GNU Lesser General Public
11  * License as published by the Free Software Foundation; either
12  * version 2.1 of the License, or (at your option) any later version.
13  *
14  * This library 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. See the GNU
17  * Lesser General Public License for more details.
18  *
19  * You should have received a copy of the GNU Lesser General Public
20  * License along with this library; if not, write to the Free Software
21  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
22  */
23
24 package org.dbforms.event.eventtype;
25
26 import org.apache.commons.logging.Log;
27 import org.apache.commons.logging.LogFactory;
28
29
30
31 /**
32  * EventTypeStrategy implementation. Defines the strategy to identify an event
33  * group or type value from an input event string.
34  *
35  * @author Luca Fossato
36  *
37  */
38 public class DbFormsEventTypeStrategy extends CompositeEventTypeStrategy {
39    /** logging category */
40    private static Log logCat = LogFactory.getLog(DbFormsEventTypeStrategy.class
41                                                  .getName());
42
43    /**
44     * Default constructor. <br>
45     * Add the DatabaseEventTypeStrategy and the NavigationEventTypeStrategy
46     * objects to the composite strategy list
47     */
48    public DbFormsEventTypeStrategy() {
49       strategyList.add(new DatabaseEventTypeStrategy());
50       strategyList.add(new NavigationEventTypeStrategy());
51    }
52
53    /**
54     * Gets the event group value.
55     *
56     * @param eventString the string that identifies an event type
57     *
58     * @return The event group value, or <code>EventType.EVENT_UNDEFINED</code>
59     */
60    public int getEventGroup(String JavaDoc eventString) {
61       int groupValue = EventType.EVENT_UNDEFINED;
62
63       for (int i = 0; i < strategyList.size(); i++) {
64          logCat.info("::getEventGroup - using [" + getChild(i).getId()
65                      + "] strategy");
66          groupValue = getChild(i)
67                          .getEventGroup(eventString);
68
69          if (groupValue != EventType.EVENT_UNDEFINED) {
70             break;
71          }
72       }
73
74       return groupValue;
75    }
76
77
78    /**
79     * Gets the event type value.
80     *
81     * @param eventString the string that identifies an event type
82     *
83     * @return The event type value, or <code>EventType.EVENT_UNDEFINED</code>
84     */
85    public String JavaDoc getEventType(String JavaDoc eventString) {
86       String JavaDoc typeValue = String.valueOf(EventType.EVENT_UNDEFINED);
87
88       for (int i = 0; i < strategyList.size(); i++) {
89          logCat.info("::getEventType - using [" + getChild(i).getId()
90                      + "] strategy");
91          typeValue = getChild(i)
92                         .getEventType(eventString);
93
94          if (!typeValue.equals(String.valueOf(EventType.EVENT_UNDEFINED))) {
95             break;
96          }
97       }
98
99       logCat.info("::getEventType - returned the event type [" + typeValue
100                   + "] from [" + eventString + "]");
101
102       return typeValue;
103    }
104
105
106    /**
107     * Gets the EventTypeStrategy identifier.
108     *
109     * @return the EventTypeStrategy identifier
110     */
111    public String JavaDoc getId() {
112       return "DbFormsEventTypeStrategy";
113    }
114 }
115
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