/*
* Copyright (c) 2005, 2006, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation. Oracle designates this
* particular file as subject to the "Classpath" exception as provided
* by Oracle in the LICENSE file that accompanied this code.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
* or visit www.oracle.com if you need additional information or have any
* questions.
*/
package com.sun.rowset;
import java.io.*;
import java.util.*;
import java.lang.*;
/**
* This class is used to help in localization of resources,
* especially the exception strings.
*
* @author Amit Handa
*/
public class JdbcRowSetResourceBundle implements Serializable {
/**
* This <code>String</code> variable stores the location
* of the resource bundle location.
*/
static String fileName;
/**
* This variable will hold the <code>PropertyResourceBundle</code>
* of the text to be internationalized.
*/
transient PropertyResourceBundle propResBundle;
/**
* The constructor initializes to this object
*
*/
static JdbcRowSetResourceBundle jpResBundle;
/**
* The varible which will represent the properties
* the suffix or extension of the resource bundle.
**/
private static final String PROPERTIES = "properties";
/**
* The varibale to represent underscore
**/
private static final String UNDERSCORE = "_";
/**
* The variable which will represent dot
**/
private static final String DOT = ".";
/**
* The variable which will represent the slash.
**/
private static final String SLASH = "/";
/**
* The variable where the default resource bundle will
* be placed.
**/
private static final String PATH = "com/sun/rowset/RowSetResourceBundle";
/**
* The constructor which initializes the resource bundle.
* Note this is a private constructor and follows Singleton
* Design Pattern.
*
* @throws IOException if unable to load the ResourceBundle
* according to locale or the default one.
*/
private JdbcRowSetResourceBundle () throws IOException {
// Try to load the resource bundle according
// to the locale. Else if no bundle found according
// to the locale load the default.
// In default case the default locale resource bundle
// should always be loaded else it
// will be difficult to throw appropriate
// exception string messages.
Locale locale = Locale.getDefault();
// Load appropriate bundle according to locale
propResBundle = (PropertyResourceBundle) ResourceBundle.getBundle(PATH,
locale, Thread.currentThread().getContextClassLoader());
}
/**
* This method is used to get a handle to the
* initialized instance of this class. Note that
* at any time there is only one instance of this
* class initialized which will be returned.
*
* @throws IOException if unable to find the RowSetResourceBundle.properties
*/
public static JdbcRowSetResourceBundle getJdbcRowSetResourceBundle()
throws IOException {
if(jpResBundle == null){
synchronized(JdbcRowSetResourceBundle.class) {
if(jpResBundle == null){
jpResBundle = new JdbcRowSetResourceBundle();
} //end if
} //end synchronized block
} //end if
return jpResBundle;
}
/**
* This method returns an enumerated handle of the keys
* which correspond to values translated to various locales.
*
* @return an enumeration of keys which have messages tranlated to
* corresponding locales.
*/
public Enumeration getKeys() {
return propResBundle.getKeys();
}
/**
* This method takes the key as an argument and
* returns the corresponding value reading it
* from the Resource Bundle loaded earlier.
*
* @return value in locale specific language
* according to the key passed.
*/
public Object handleGetObject(String key) {
return propResBundle.handleGetObject(key);
}
}