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Java > Open Source Codes > org > dbforms > util > MessageResourcesInternal


1 /*
2  * $Header: /cvsroot/jdbforms/dbforms/src/org/dbforms/util/MessageResourcesInternal.java,v 1.9 2004/08/18 12:26:09 hkollmann Exp $
3  * $Revision: 1.9 $
4  * $Date: 2004/08/18 12:26:09 $
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.util;
25
26 import java.util.Locale JavaDoc;
27
28
29
30 /**
31  * handling of internal messages
32  *
33  * @author Henner Kollmann
34  */
35 public class MessageResourcesInternal {
36    private static String JavaDoc RESOURCE = "org.dbforms.resources.messages";
37    private static MessageResource msgRes = new MessageResource(RESOURCE);
38
39    /**
40     * Get the message from ResourceBundle. If not present, return the
41     * defaultMsg at the place of a null. To avoid to doing this condition
42     * everywhere in the code ...
43     *
44     * @param msgString </code> : Message key to lookup.
45     * @param localeLocale </code> : Locale object to map message with good
46     * ResourceBundle.
47     * @param defaultMsgString </code> : String to return if the lookup message
48     * key is not found.
49     *
50     * @return <code>String</code> : Message resolve.
51     */
52    public static String JavaDoc getMessage(String JavaDoc msg,
53                                    Locale JavaDoc locale,
54                                    String JavaDoc defaultMsg) {
55       String JavaDoc s = getMessage(msg, locale);
56
57       if (Util.isNull(s)) {
58          s = defaultMsg;
59       }
60
61       return s;
62    }
63
64
65    /**
66     * Retrieve message from ResourceBundle. If the ResourceBundle is not yet
67     * cached, cache it and retreive message.
68     *
69     * @param msgString </code> : Message key to lookup.
70     * @param locLocale </code> : Locale object to map message with good
71     * ResourceBundle.
72     *
73     * @return <code>String</code> : Message resolve, null if not found.
74     */
75    public static String JavaDoc getMessage(String JavaDoc msg,
76                                    Locale JavaDoc loc) {
77       // first look in custom resources
78 String JavaDoc res = MessageResources.getMessage(msg, loc);
79
80       if (res == null) {
81          res = msgRes.getMessage(msg, loc);
82       }
83
84       return res;
85    }
86
87
88    /**
89     * Retrieve message from ResourceBundle and replace parameter "{x}" with
90     * values in parms array.
91     *
92     * @param msgString </code> : Message key to lookup.
93     * @param locLocale </code> : Locale object to map message with good
94     * ResourceBundle.
95     * @param parmsString[] </code> : Parameters to replace "{x}" in message .
96     *
97     * @return <code>String</code> : Message resolve with parameter replaced,
98     * null if message key not found.
99     */
100    public static String JavaDoc getMessage(String JavaDoc msg,
101                                    Locale JavaDoc loc,
102                                    String JavaDoc[] parms) {
103       // first look in custom resources
104 String JavaDoc res = MessageResources.getMessage(msg, loc, parms);
105
106       if (res == null) {
107          res = msgRes.getMessage(msg, loc, parms);
108       }
109
110       return res;
111    }
112 }
113
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